bmw e90 towing hitch installation

Original BMW Accessory.Installation Instructions.

Towing Hitch Retrofit with Pivot-mounted Ball HeadBMW 3 Series Saloon (E 90)BMW 3 Series Touring (E 91)BMW 3 Series Coupé (E 92)

Retrofit kit No. 71 60 0 399 824 Electrical components retrofit kit71 60 0 410 950 Electrical components retrofit kit71 60 0 418 282 Electrical components retrofit kit71 60 0 418 641 Electrical components retrofit kit71 60 0 418 643 Electrical components retrofit kit71 60 6 767 173 Pivot-mounted towing hitch71 60 6 772 205 Pivot-mounted towing hitch71 60 6 776 679 Pivot-mounted towing hitch71 60 6 782 408 Pivot-mounted towing hitch71 60 6 782 408 Pivot-mounted towing hitch71 60 6 784 585 Pivot-mounted towing hitch71 60 6 784 586 Pivot-mounted towing hitch71 60 6 779 422 Holding bar71 60 6 779 423 Holding bar

Installation timeThe installation time is approx. 4.5 hours, but may vary depending on the condition of the car and the equipment in it.

As a matter of principle, the car’s firmware must be flashed to the latest I stage status before starting the work. Depending on the production age of the car and the work already carried out on the car, the programming times will vary, which means that we cannot quote a specific time at this point.

The installation time does not include any time for programming/encoding, as this depends on the age of the car and the equipment in it.

Important information These installation instructions are primarily designed for use within the BMW dealership organisation and by authorised BMW service companies. In any event, the target group for these installation instructions is specialist personnel trained on BMW cars with the appropriate specialist knowledge. All work must be completed using the latest BMW repair manuals, circuit diagrams, servicing manuals and work instructions, in a rational order, using the prescribed tools (special tools) and observing current health and safety regulations.

In the event of any installation or function problems, restrict the troubleshooting session to about 0.5 hours for mechanical work or 1.0 hours for electrical work.

© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z)

In order to reduce costs and avoid any additional expense, send a query immediately to the Technical Parts Support via the Aftersales Assistance Portal (ASAP).

Specify the following information:- Chassis number- Part number of the retrofit kit- A precise description of the problem- Work steps already carried out

Do not archive the hard copy of these installation instructions since daily updates are made by ASAP!

Pictogramsdenotes instructions that draw your attention to dangers.

Denotes instructions that draw your attention to special features.

Denotes the end of the instruction or advisory text.

Ordering instructions

On cars with 6-cylinder petrol engines (N52) and automatic gearbox, the 400 W electric fan must be replaced with a 600 W electric fan (see EPC for part number and further details) .If you do not replace the electric fan, the towing capacity will be reduced and the engine may stop.

Installation information

For E90 cars built before 07.03.2005 the 26 mm mounting bolts must be replaced with hexagonal screws Z supplied.

Before installation, the build status of the fuse box should be tested in accordance with TIS RA 61 13 ... (Interior fuse box for cars built before 09/2005 …).

Ensure that the cables/lines are not kinked or damaged as you install them in the car. Costs incurred as a result of this will not be reimbursed by BMW AG.

Additional cables/lines that you install must be secured with cable ties.

If the specified PIN chambers are occupied, bridges, double crimps or twin-lead terminals must be used.

All pictures show LHD cars; proceed accordingly on RHD cars.

After the installation work the retrofit kit must be programmed / coded via the Retrofit/CIP path.

Legal requirementsA type approval in accordance with EC Directive 94/20/EC Annex VII exists for the towing hitch, with EC homologation mark e13*1709.If you comply with these regulations and notes in these installation instructions, no special acceptance test pursuant to § 19 of the German Road Traffic Licensing Directive and no special entry in the vehicle registration document is necessary.

The ball head must be swung in when it is not in use.

Section 15 of these installation instructions is to be given to the customer.

!

© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 2

List of special equipmentThe following special equipment must be taken into consideration when installing the retrofit kit:

SA 507 Park Distance Control (PDC), rear

SA 508 Park Distance Control (PDC), front and rear

Special tools requiredNone

© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 3

Contents

Section Page

1. Parts overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2. Preparatory work. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3. Connections diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

4. Installation and cabling diagram (E90 or E92 cars only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

5. Installation and cabling diagram (E91 cars only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

6. Installing the towing hitch and socket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

7. Installing and connecting the wiring harness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

8. Installing the signal generator (E90 cars built before 09/05 only) . . . . . . . . . . . . . . . . . . . . . . . . . 20

9. Modifying the connection plug for the electric fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

10. Affixing the nose weight and information label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

11. Concluding work and coding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

12. Circuit diagram (cars built before 09/05 only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

13. Circuit diagram (cars built after 09/06 and before 03/07 only) . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

14. Circuit diagram (cars built after 03/07 only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

15. Statutory regulations pursuant to EC Directive 94/20/EC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 4

1. Parts overview

Legend

A Retrofit wiring harnessB HolderC Towing hitchD Fillister head self-tapping screw 4.8 x 16 mm (4x)E Cable tie 3.0 mm x 200 mm (20x)F SocketG Towing hitch switchH Fusible link 15 AI Washer (3x, for models 335i/335d only)J Signal generator (for E90 cars built before 09/05 only)K Fusible link 20 AL Fusible link 30 A (2x after 09/06)M Miniconnector (4x until 09/06, 5x after 09/06)N Socket contact (2x)O Trailer moduleP Pan head screw M5 x 30 mm (3x)Q Speed nut (4x)R Module holderS Towing hitch activation moduleT Black 4-pin socket casingU Hexagonal nut with M12 washer (6x)V Rubber grommet (2x)W Socket contact 0.25-0.5 mm�X Rubber grommet 0.25-1.0 mm�

BA

FL MH I J K

GD

C

EN

O PQ

R ST U V W X

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© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 5

1. Parts list

Legend

Y Battery cover top section (for E90 cars only)Z Hexagonal screw M12 x 40 mm (6x, for E90 cars built before 07.03.2005 only)AA Expanding nut (for E90 cars built after 07.03.2005 up to 09/05 only)AB Cable tie with holder (2x)AC Holder (for E90 cars built before 09/05 only)AD Fillister head self-tapping screw 4.8 x 14 mm (for E90 cars built before 09/05 only)AE Hexagonal nut M6AF Miniature fusible link 7.5 A (for E90 cars built before 09/05 only)AG Speed nut (for E91 cars only)AH Self-tapping screw 4.8 x 32 mm (for E91 cars only)AI Miniature fusible link 20 A (for E90 cars built before 09/05 only)AJ Socket contact (cars built after 03/07 only)AK Miniature fusible link 15 A (for E90 cars built before 03/07 only)AL Middle bracket (for cars with rigid ball head only, not required)AM Middle bracket (for models with removable ball head only, not required)AN Middle bracket (for models 335i/335d with pivoted ball head only)AO Left bracket (for models 335i/335d only)AP Right bracket (for models 335i/335d only)AQ Hexagonal screw (3x, for models 335i/335d only)

YZ AA AB

AD AE AF

AG AH AI AJ AK

AC

AL AM AN

AO AQAP��

© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 6

2. Preparatory work

TIS No.Conduct a brief test ---

Disconnect negative pole of battery 12 00 ...

The following components must be removed first of allRear bumper trim 51 12 056

Support for rear bumper trim 51 12 050

Boot floor trim 51 47 101

Right boot wheel arch trim 51 47 161

Left boot – wheel arch trim (E91 cars only) 51 47 161

Trim for rear closing panel 51 46 050

A pillar trim at bottom right 51 43 075

Glove compartment 51 16 360

Trim at bottom right of instrument panel 51 45 181

Front door sill strip (interior) on both sides 51 47 000

Door sill strip, rear (interior) right (and left for E90 cars built before 09/05 only) 51 47 030

B pillar trim at bottom right 51 43 150

Unfasten fuse box ---

A pillar trim at bottom left 51 43 070

Pedal trim 51 45 185

Rear seat 52 24 005

Rear seat backrests 52 24 010

Rear window shelf (E90 cars built before 09/05 only) 51 46 001

© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 7

3. Connections diagram

Item Designation Signal Cable colour / Cross-section

Connection location in the car Abbreviation / Slot

A Retrofit wiring harness --- --- --- ---

A1 Black 13-pin socket casing --- --- On socket F X630

A2 Eyelet M6 Terminal 31 BR2.50 mm2

On earth post in boot on right X498

A3 Cable open HKL 1 WS/BR0.5 mm2

On boot lid connector, on the wiring harness in right-hand side of boot

X465

A4 Black 16-pin socket casing --- --- On trailer module O X609

A5 Natural 16-pin socket casing

--- ---On towing hitch activation module S X992

A6 Natural 6-pin socket casing --- --- On towing hitch switch G X4443

A7 Socket contact Terminal 15 GN/SW0.35 mm2

On CAS control unit (black 41-pin) X13376PIN 10

A8 Cable open Terminal 54M SW/GE0.35 mm2

To footwell module plug using miniature connector M (51-pin SW)

X14260PIN 40

A9 Socket contact Terminal 30 RT/BL2.50 mm2

Cars built before 09/06 onlyTo junction box A4010Cars built between 09/06 and 03/07 onlyTo junction box A4010Cars built after 03/07 onlyTo junction box A4010

X11004PIN 4X11004PIN 5X11008PIN 1

A10 Socket contact Terminal 30 RT/VI2.50 mm2

Cars built before 03/07 onlyTo junction box A4010Cars built after 03/07 onlyTo junction box A4010

X11004PIN 1X11004PIN 5

A11 Socket contact Terminal 30 RTSW1.50 mm2


X11002PIN 5X11003PIN 4

A12 Cable open K-CAN H OR/GN0.35 mm2

Behind the fuse holder using miniature connector M on orange/green cable of the standard wiring harness

X15001

A1

A13 A12

A15 A14 A10A11A17

A19

A9

A8 A7A6

A5

A4

A2 A3

A18

A16

A

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© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 8

3. Connections diagram

Branches A18 and A19 are not present in retrofit cable set A with spare parts no.: 61 12 0 399 478.

Item Designation Signal Cable colour / Cross-section

Connection location in the car Abbreviation / Slot

A13 Cable open K-CAN L GN0.35 mm2

Behind the fuse holder using miniature connector M on green cable of the standard wiring harness

X15002

A14 Black 3-pin socket casing --- --- To towing hitch C X18039

A15 Black 2-pin socket casing --- --- To towing hitch C X18077

A16 Black 2-pin socket casing

--- ---

E90 cars built before 09/05 onlyTo signal generator JE90 cars built after 09/05 and E91 onlyInsulate and tie back

X10419

---

A17 Socket contact Terminal 30G RT/VI0.75 mm2

E90 cars built before 09/05 onlyTo junction box A4010E90 cars built after 09/05 and E91 onlyInsulate and tie back

X11002PIN 7

---

A18 Socket contact Terminal 30 RT/GE2.50 mm2


X11006PIN 3X11009PIN 1

A19 Cable open Terminal 49HR BL/BR0.35 mm2

Using miniature connector M to the BL/BR cable on the standard wiring harness to the right tail light

X318

A1

A13 A12

A15 A14 A10A11A17

A19

A9

A8 A7A6

A5

A4

A2 A3

A18

A16

A

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© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 9

4. Installation and cabling diagram (E90 or E92 cars only)

Legend

A Retrofit wiring harnessF SocketG Towing hitch switchJ Signal generator (for cars built before 09/05 only)O Trailer moduleS Towing hitch activation module

1 Pick-up K-CAN H/L

2 Fuse holder plug X11004

3 Earth post connection X498

4 Boot lid connector X465

5 CAS control module

6 Footwell module tap

7 To towing hitch branches A14 and A15

8 Tap terminal 49 HR tail light, right (not with retrofit cable set A with spare parts no.: 61 12 0 399 478)

1

5

67

J

3

F

8

4 S

A

O

G

2

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© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 10

5. Installation and cabling diagram (E91 cars only)

Legend

A Retrofit wiring harnessF SocketG Towing hitch switchO Trailer moduleS Towing hitch activation module

1 Pick-up K-CAN H/L

2 Fuse holder plug X11004

3 Earth post connection X498

4 Boot lid connector X465

5 CAS control module

6 Footwell module tap

7 To towing hitch branches A14 and A15

8 Tap terminal 49 HR tail light, right (not with retrofit cable set A with spare parts no.: 61 12 0 399 478)

1

5

67

3

F

8

4 S

A

O

G

2

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© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 11

6. Installing the towing hitch and socket

E90 or E92 cars with SA 507 or SA 508 only

Mark dimensions on the right-hand rear closing panel (1) as follows and centrepunch hole position (2):

Drill through the rear closing panel (1) at the dril-ling point (2) and enlarge the hole using a 40 mm step drill bit.

Deburr the hole and coat the bare surfaces with preservative.

a = 26 mm b = 30 mm

E91 cars with SA 507 or SA 508 only

Mark dimensions on the right-hand rear closing panel (1) as follows and centrepunch hole position (2):

Drill through the rear closing panel (1) at the drilling point (2) and enlarge the hole using a 40 mm step drill bit.

Deburr the hole and coat the bare surfaces with preservative.

a = 125 mm b = 32 mm

All cars without SA 507 or SA 508

Remove the sealing cover (1).

All cars

Remove the existing seals (1).

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© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 12


E90 cars built before 07.03.2005 only

The stud bolts (1) must be replaced since otherwise the thread length is inadequate.

Remove the stud bolts (1) by striking them inwards and insert hexagonal screws Z.

Models 335i/335d only

Bolt left bracket AO and right bracket AP to towing hitch C using hexagonal screw AQ and washer I.

Bolt centre bracket AL to towing hitch C using hexagonal screw AQ and washer I.

All cars

Connect branch A1 to plug X630 on socket F.

11

090 0274 Z

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C

APAO

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AQ

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I

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X630

A1

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© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 13


Use pan head screws P to secure socket F to towing hitch C.

Connect branch A14 to plug X18039.

Connect branch A15 to plug X18077.

Fit cable ties AB between the marks (1) on retrofit wiring harness A.

Clip retrofit wiring harness A into the holes (2) with cable ties AB.

Secure retrofit wiring harness A to towing hitch C using cable ties E.

Note the tightening torque value: 108 Nm.

Route retrofit wiring harness A through the hole (1) into the boot.

Secure towing hitch C with hexagonal nuts U.

Insert the rubber grommet (2) into the hole (1).

P

A14

C

F

A15 X18077

X18039

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ABA

C1

E

2

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2

C

U U

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© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 14

7. Installing and connecting the wiring harness

Pull back the insulation mat (1).

Cars without SA 507 or SA 508 only

Connect branch A4 to trailer module O.

Connect branch A5 to towing hitch activation module S.

Insert trailer module O and towing hitch activation module S into module holder R.

Cars with SA 507 or SA 508 only

Use the existing module holder.

E90 or E92 cars without SA 507 or SA 508 only

Position speed nuts Q on the mounting points on the right-hand side of the boot.

Secure module holder R with fillister head self-tapping screws D.

E91 cars without SA 507 or SA 508 only

Push on speed nuts Q in the right-hand side of the boot (1).

Insert speed nuts AG on the mounting points on the right-hand side of the boot (1).

Cars with SA 507 or SA 508 only

Use the existing module holder.

Cars without SA 507 or SA 508 only

Secure module holder R with fillister head self-tapping screws D and AH.

A4

A5

R

1

S

O

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1

D

QR

D

Q

090 0222 Z

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© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 15


E90 oder E92 cars only

Position speed nut Q on the mounting point in the right-hand side of the boot.

Secure holder B using fillister head self-tapping screw D.

Route branch A6 through holder B and connect it to towing hitch switch G.

Engage towing hitch switch G in holder B.

E91 cars only

Route branch A6 to the left-hand side of the car.

Secure holder B using fillister head self-tapping screw D.

Route branch A6 through holder B and connect it to towing hitch switch G.

Engage towing hitch switch G in holder B.

All cars

Thread retrofit wiring harness A through the opening (1) in the insulation mat.

Secure branch A2 to earth post X498.

Route branch A3, white/brown cable, to the standard wiring harness and connect it to connector X465, white/brown cable, using miniature connector M.

Route branches A7 – A13 , A16, A17 and A18 on the right-hand side of the car to the front.

E90 cars built after 09/05 only

Insulate branches A16 and A17 and tie them back.

A6

DB

Q

G

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A6

DB

G

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X498

X465

A7-A13/A16/A17/A18

A2

A3

M

1

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© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 16


Not with retrofit cable set A with spare parts no.: 61 12 0 399 478. Check whether the

49HR signal is present on the BL/BR cable on the standard wiring harness (1).

Route branch A19, BL/BR cable, to right tail light connect as follows using miniconnector M:

Connect branch A19 to connector X318 blue/brown cable.

All cars

Route branches A9 – A13 to the fuse holder.

Connect branches A12, orange/green cable, and A13, green cable, to twisted standard cables X15001 and X15002 of the same colour using miniature connectors M.

X318

A19

M

1

090 1056 Z

M

X15001

X15002A13

A12

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© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 17


Cars built before 09/06 only

Connect branch A9, RT/BL cable, to plug X11004 PIN 4.

Cars built between 09/06 and 03/07 only

Connect branch A9, RT/BL cable, to plug X11004 PIN 5.

Cars built after 03/07 only

Disconnect the socket contact of branch A9, RT/BL cable and crimp on socket contact AJ.

Connect branch A9 to plug X11008, (10+5 pin GN), PIN 1.


Connect branch A10, RT/VI cable, to plug X11004 PIN 1.


Connect branch A10, RT/VI cable, to plug X11004 PIN 5.


Connect branch A11, red/white cable, to plug X11002 PIN 5.


Disconnect the socket contact of branch A11, RT/SW cable and crimp on socket contact AJ.

Connect branch A11, RT/SW cable, to plug X11003 PIN 4.

E90 cars built before 09/05 only

Connect branch A17, red/violet cable, to plug X11002 PIN 7.

All cars

Route branches A7 and A8 to the left-hand side of the car.

X11004

X11008

A9AJ

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X11004

A10

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X11003X11002

A11

A17

AJ

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© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 18



Not with retrofit cable set A with spare parts no.: 61 12 0 399 478.

Connect branch A18, RT/GE cable, to plug X11006, 6-pin BL, PIN 3.


Not with retrofit cable set A with spare parts no.: 61 12 0 399 478.

Connect branch A18, RT/GE cable, to plug X11009, 6-pin BO-VI, Pin 1.

All cars

Route branch A8, black/yellow cable, to plug X14260 (black 51-pin).

Connect branch A8 as follows to plug X14260 using miniature connector M:

- Branch A8, black/yellow cable, to the same colours on the cable from PIN 40

Route branch A7, green/black cable, to the CAS control unit (1).

Disconnect and open plug X13376 (black 41-pin) from the CAS control unit (1).

Connect branch A7, green/black cable, to PIN 10 of plug X13376.

Secure and connect plug X13376.

X11004

X11009

X11006

A18

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X14260

A8M��

X133761

A7

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© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 19



Insert fusible link H into slot 10.

Insert fusible link K into slot 45.

In retrofit cable set A with spare parts no.: 61 12 0 399 478, do not insert fusible link L

into slot 42.

Insert fusible link L into slot 44 and 42.

E90 cars built before 09/05 only

Insert fusible link AF into slot 22.


Insert fusible link H into slot 10.

Insert fusible link K into slot 47.

In retrofit cable set A with spare parts no.: 61 12 0 399 478, do not insert fusible link L

into slot 42.




Insert fusible link AI into slot 71.

Insert fusible link AK into slot 10.

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HAF

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K/AI

AK

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© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 20

8. Installing the signal generator (E90 cars built before 09/05 only)

Route branch A16 to the installation site of signal generator J.

Secure signal generator J to holder AC using hexagonal nut AE.

Cars built before 07.03.2005 only

Insert holder AC into the existing hole (1) and mark the hole (2).

Drill the hole (2) using a 4.0 mm twist drill bit.

Secure holder AC using fillister head self-tapping screw AD.

Connect branch A16 to signal generator J.

Cars built after 07.03.2005 only

Insert expanding nut AA into the C pillar.

Secure holder AC to expanding nut AA using fillister head self-tapping screw AD.

Connect branch A16 to signal generator J.

A16

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J

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2

J

1

ACAD

A16

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AC

A16

J

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© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 21

9. Modifying the connection plug for the electric fan

Cars with 6-cylinder petrol engines (N52) and automatic gearbox only

Disconnect plug X1797 from the electric fan (1).

Replace the electric fan (1) with an electric fan with a rating of 600 W as described in TIS.

Disconnect the cables from plug X1797 and cut off the contacts.

Push rubber grommet V onto the red/blue or brown cable and crimp it to socket contact N.

Push rubber grommet X onto the black/blue cable and crimp it to socket contact W.

Connect the cables to socket casing T (black 4-pin) as follows:

- BR cable to PIN 1

- Red/blue cable to PIN 2

- Black/blue cable to PIN 4

Connect the plug to the new electric fan.

1

X1797

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W TX

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© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 22

10. Affixing nose weight and information label

E90 oder E92 cars only

Unclip the battery cover top section (1) from the battery cover bottom section (2).

Clip battery cover top section Y into the battery cover bottom section (2).

2

1

Y

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© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 23

11. Concluding work and coding

- Connect the battery

- Encode the retrofit via the Retrofit path

- Conduct a brief test

- Check the function of the towing hitch

- Re-assemble the car

Give the customer section 15 of these installation instructions, “Statutory regulations pursuant to EC Directive 94/20/EC”.

© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 24

12. Circuit diagram (cars built before 09/06 only)

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© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 25

12. Circuit diagram (cars built before 09/06 only)

Legend

All the designations marked with an asterisk (*) apply only to these installation instructions or this circuit diagram.

Cable colours

A149 CAS control moduleA4010 Fuse holder

A1* Black 13-pin socket casing, on socket (X630)A4* Black 16-pin socket casing, on trailer module (X609)A5* Natural 16-pin socket casing, on towing hitch activation module S* (X992)A6* Natural 6-pin socket casing, on towing hitch switch G (X4443)A14* Black 3-pin socket casing, on towing hitch C* (X18039)A15* Black 2-pin socket casing, on towing hitch C* (X18077)A16* Black 2-pin socket casing, on signal generator J* (X10419)A18* Socket contact, (not in retrofit cable set A with spare parts no.: 61 12 0 399 478)A19* Open cable, with miniature connector M on standard wiring harness

(not in retrofit cable set A with spare parts no.: 61 12 0 399 478)

C* Towing hitch

J* Signal generator (for E 90 cars built before 09/05 only)

G* Towing hitch switch

O* Trailer module

S* Towing hitch activation module

X465 Boot lid connector (A3*)X498 Earth post, on the right-hand side of the boot (A2*)X11002 Natural 10 + 5-pin socket casing, on fuse holder A4010 (A11* and A17*)X11004 Black 6-pin socket casing, on fuse holder A4010 (A9* and A10*)X11006 Blue 6-pin socket casing, to fuse holder A4010 (A1*)X13376 Black 41-pin socket casing, on CAS control unit A149 (A7*)X14260 Centre brake light tap, connected to footwell module (A8*) using miniature connectorX15001 K-CAN H tap, connected to standard wiring harness (A12*) using miniature connector MX15002 K-CAN L tap, connected to standard wiring harness (A13*) using miniature connector M

BL Blue RT RedBR Brown SW BlackGE Yellow VI VioletGN GreenGR GreyOR Orange

© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 26

13. Circuit diagram (cars built after 09/06 and before 03/07 only)

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© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 27

13. Circuit diagram (cars built after 09/06 and before 03/07 only)

Legend


Cable colours




C* Towing hitch

J* Signal generator (for E90 cars built before 09/05 only)


O* Trailer module


X465 Boot lid connector (A3*)X498 Earth post, on the right-hand side of the boot (A2*)X11002 Natural 10 + 5-pin socket casing, on fuse holder A4010 (A11* and A17*)X11004 Black 6-pin socket casing, on fuse holder A4010 (A9* and A10*)X11006 Blue 6-pin socket casing, to fuse holder A4010 (A18*)X13376 Black 41-pin socket casing, on CAS control unit A149 (A7*)X14260 Centre brake light tap, connected to footwell module (A8*) using miniature connectorX15001 K-CAN H tap, connected to standard wiring harness (A12*) using miniature connector MX15002 K-CAN L tap, connected to standard wiring harness (A13*) using miniature connector M

BL Blue RT RedBR Brown SW BlackGE Yellow VI VioletGN GreenGR GreyOR Orange

© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 28

© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 29

14. Circuit diagram (cars built after 03/07 only)

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© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 30

14. Circuit diagram (cars built after 03/07 only)

Legend


Cable colours




C* Towing hitch

J* Signal generator (for E90 cars built before 09/05 only)


O* Trailer module


X465 Boot lid connector (A3*)X498 Earth post, on the right-hand side of the boot (A2*)X11002 Natural 10 + 5-pin socket casing, on fuse holder A4010 (A11* and A17*)X11003 Black 10 + 5-pin socket casing, on fuse holder A4010 (A11*)X11004 Blue 6-pin socket casing, to fuse holder A4010 (A10*)X11008 Black 10 + 5-pin socket casing, on fuse holder A4010 (A9*)X11009 BO-VI 6-pin socket casing, to fuse holder A4010 (A18*)X13376 Black 41-pin socket casing, on CAS control unit A149 (A7*)X14260 Centre brake light tap, connected to footwell module (A8*) using miniature connectorX15001 K-CAN H tap, connected to standard wiring harness (A12*) using miniature connector MX15002 K-CAN L tap, connected to standard wiring harness (A13*) using miniature connector M

BL Blue OR OrangeBR Brown RT RedGE Yellow SW BlackGN Green VI VioletGR Grey

15. Statutory regulations pursuant to EC Directive 94/20/EC

Appendix VII

Regulations for the homologation of a vehicle for the optional installation of mechanical connection devices (towing hitches)

1. General regulations

1.1The vehicle manufacturer determines which types and classes of connecting devices can be fitted onto the vehicle type, and specifies the values D, V 1, S or U (if applicable) which are based on the design of the vehicle type in combination with the planned type of connecting devices. The code values D, V, S or U of the connecting devices approved in accordance with this directive must be greater than or equal to those specified for the vehicle type in question.

1.2The connection devices must be installed on the vehicle type in accordance with the installation instructions specified by the vehicle manufacturer and in compliance with the manufacturer of the connection device and the Technical Service. The vehicle manufacturer shall define the permitted points for securing the connection devices to the vehicle type and, if necessary, the mountings, installation plates, etc. that must be mounted on this specific vehicle type.

1.3Only automatic hitches are allowed to be used for hitching up trailers with a total mass of more than 3.5 tonnes to motor vehicles; these automatic hitches must permit an automatic hitching procedure.

1.4When connecting devices of class B, D, E and H are fitted to trailers, it is always necessary to assume a value of 32 tonnes for the total mass T of the towing vehicle in order to calculate the D value. If the D value of the connecting device for T = 32 tonnes is not sufficient, the resultant restriction relating to the mass T of the towing vehicle and the mass of the vehicle combination (towing vehicle and trailer) must be specified in the approval sheet for the trailer.

1) The V value must only be specified for vehicles with a technical gross weight in excess of 3.5 tonnes.

© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 31


2. Special regulations

2.1 Fitting coupling balls and towing brackets (ball head with towing hitch)

2.1.1When coupling balls and towing brackets are fitted to a vehicle type of class M1, class M2 below 3.5 tonnes and class N1, the clearance and height dimensions shown in the figure 1 and 2 must be maintained. This requirement does not apply to off-road vehicles in the sense of Appendix II of Directive 92/53/EEC. Unspecified details are to be selected to suit the appropriate purpose. The dimensions and angles must be checked using suitable measuring instruments.

2.1.2The vehicle manufacturer must supply installation instructions for coupling balls and towing brackets. These installation instructions must specify whether the attachment area requires reinforcing.

2.1.3It must also be possible to couple and uncouple coupling heads when the longitudinal axis of the coupling head in relation to the centre line of the coupling ball and towing bracket:

a) is turned horizontally through b = 60˚ to the right or left (see Figure 2)

b) is rotated vertically through a = 10˚ upwards or downwards (see Figure 1)

c) is rotated axially through 10˚ to the right or left.

2.1.4The mounted coupling ball must not obscure the rear registration plate or the space provided for the rear registration plate; otherwise, a ball that can be removed without requiring special tools must be used.

2.2 Installing tow ball couplings

2.2.1Class B coupling heads are permitted to be used with trailers of a gross mass up to 3.5 tonnes. Tow ball couplings are to be installed in such a way that the coupling point of the trailer when the trailer is hori-zontal and with a permitted axle load is 430 mm ± 35 mm above the horizontal wheel contact level (see Figure 3). The horizontal position for caravans and trailers is the position in which the floor or the loading bed is horizontal. On trailers without a reference area of this type (for example boat trailers or the like) the manufacturer of the trailer must specify a suitable reference line to define the horizontal position. The required height only applies to trailers that are to be coupled to the vehicles listed in 2.1.1.

2.2.2It must be possible to operate coupling heads safely within the clearance of the coupling ball as shown in figures 1 and 2.

© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 32


Figure 1

Space for coupling ball, side view.

Figure 2

Space for coupling ball, plan view.

Figure 3

Installation height for the tow ball coupling.

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© BMW AG, Munich 01 29 0 399 825 7/2007 (T/Z) 33

bmw e90 towing hitch installation

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