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Vario Roof

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Vario Roof Construction

Refined design consisting of:

Tubular frame

7-joint hinges (2)

Load assist feature

(easy pack)

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Load Assist (Easy Pack)

1 - Vario roof

2 - luggage partition cover

3 - load assist (easy pack) switch

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How to Operate the Vario Roof

Vario roof switch (N72s16)

SmartKey (A8/1)

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Function PrerequisitesUsing Vario roof switch (N72s16)

Circuit 15 ON

Voltage not too high or low

Trunk lid locking pawl closed

Vehicle speed < 3 mph

Rollover bar crash actuation not active

Luggage partition cover closed

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Function PrerequisitesUsing SmartKey

Circuit 15C OFF

Voltage not too high or low

Trunk lid and locking pawl closed

Rollover bar crash actuation not active

Press lock / unlock button on A8/1

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Safety Parameters

Using top switch - if roof

switch is released, it willhold in that position for 7

minutes

Using SmartKey - ifbutton is released it will

hold in that position for 7

seconds In both cases a gong will

sound before roof begins

to move

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Vario Roof Communication

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SmartKey (A8/1) Communication

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What Blocks Vario Roof Operation?

System battery voltage too high or low

Vehicle speed > 3 mph

Luggage partition cover open

Diagnostic trouble codes

Hydraulic pump temperature sensor

Trunk lid open

N82/1 (BNS) Consumer prioritization (will close only)

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Vario Roof Electronic System

Vario roof control switch (N72s16)

Rollover bar / Vario roof (RVC) control module (N52)

13 limit switches (verifies hydraulic movements)

4 window motors

1 side flap motor

Rollover bar / Vario roof (RVC) hydraulic unit (A7/5)

- Vario roof valve block (Y55/1)

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Vario Roof Limit Switches

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Vario Roof Limit Switches LegendA1 Instrument cluster S69/3 Vario roof locked limit switch

A7/5 RVC hydraulic unit S69/10 Luggage compartment partition limit switch

A7/5b1 Temperature sensor S69/11 Vario roof raised/lowered limit switch

A7/5k1 Relay S83/10 Rollover bar raised/lowered limit switch

A7/5m1 Motor S114 Load assist (Easy Pack) switch

A37 PSE control module S117 Load assist top/bottom limit switch

M10/5 Left rear power window motor S118/1 Left tubular frame locked limit switch

M10/6 Right rear power window motor S118/2 Right tubular frame locked limit switch

M49/1 Side flaps motor S119 Tubular frame open limit switchN10/8 Rear SAM control module S124 Trunk lid open limit switch

N22 AAC pushbutton control module S126/1 Left side flap closed/opened limit switch

N52 RVC control module S127/1 Right side flap closed/opened limit switch

N69/1 Left door control module Y55/1 Vario roof valve block

N69/2 Right door control module Y55/1y1 Main valve

N70 Overhead control panel control module Y55/1y2 Raise rollover bar solenoid valve

N72 Lower control panel control module Y55/1y3 Close vario roof solenoid valve

N72s16 Vario roof switch Y55/1y4 Open vario roof solenoid valve

N72s17 Rollover bar switch Y55/1y5 Tubular frame and vario roof lock solenoid valve

N82/1 Vehicle electrical system control module Y55/1y6 Load assist (Easy Pack) solenoid valve

S69/1 Vario roof limit switch Y57/1 Rollover bar deployment solenoid

S69/2 Vario roof locked limit switch

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Vario Roof Hydraulic System

Rollover bar / Vario roof (RVC) hydraulic unit (A7/5)

- Temperature sensor (A7/5b1)

- Relay (A7/5k1)- Motor (A7/5m1)

8 hydraulic cylinders

Vario roof valve block (Y55/1)

- Valves Y55/1y1 to Y55/1y6

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RVC Hydraulic Unit (A7/5)

A - fluid filling port

B - pressure test port

C - pressure release screw D - relay (A7/5k1)

E - connector X8/4

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Vario Roof Hydraulic Cylinders

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Hydraulic Cylinder Legend

3 Front vario roof lock hydraulic cylinder

4 Left tubular frame lock hydraulic cylinder5 Right tubular frame lock hydraulic cylinder

6 Left vario roof (open/close) hydraulic cylinder

7 Right vario roof (open/close) hydraulic cylinder

8 Trunk lid hydraulic cylinder

9 Left load assist (raise/lower) hydraulic cylinder

10 Right load assist (raise/lower) hydraulic cylinder

A7/5 RVC hydraulic unit

A7/5k1 RelayY55/1 RVC valve block

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Rollover Bar

1-rollover bar

2 - hydraulic cylinder

3 - left / right

supporting element

4 - left / right locking

pawl cylinder

5 - crash deploymentspring

7 - lock

Y57/1 deployment

solenoid

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Rollover Bar Supporting Element

3 - supporting element

3a - rack

3b - locking pawl

4 - locking pawl

cylinder

Mechanically raisingand lowering rollover

bar

- AR91.50-P-8400R

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Rollover Bar Crash Deployment

Deployment occurs when:

Integrated sensor in RVC (N52) signals vehicle tiltangle of 57 for more than 100ms

ORVehicle acceleration in any direction > 3 times normal

G-force