Closing of Vario Roof, Function

Closing Of Vario Roof, Function







The illustrations show the individual stages when closing the vario roof

Function requirements:
- Terminal 15 "ON"
- No low voltage or overvoltage
- Trunk lid and lock pawl closed (CAN message from rear SAM control module (N10/8))
- Vehicle speed V ≤ 5 km/h
- Trunk partition closed (CAN message from PSE control module (A37))
- Roll bar deployment not active
- Actuation request from vario roof switch (N72s16) until the vario roof is fully closed (CAN message from lower control panel control module (N72))

NOTE: Remote trunk release is no longer possible until the vario roof is fully closed.

The rear window defroster remains disabled until the vario roof is closed again.

If the roll bar switch (N72s17) and vario roof switch (N72s16) are actuated simultaneously, adjustment of the roll bar is interrupted, and it is necessary to press the vario roof switch (N72s16) again to activate the vario roof function

Function sequence
Stage 0 (operating time approx. 1 sec)
- Release latches:
- Main valve (Y55/1y1)
- Tubular frame and vario roof latches solenoid valve (Y55/1y5) and
- Load assist solenoid valve (Y55/1y6) are activated.

Stage 1 (operating time approx. 4 sec)
- Move front side windows to short stroke position.

NOTE: During vario roof operation, the side windows can be moved only to the short stroke position.

- Open rear side windows
- Right rear power window motor (M10/5) and
- Left rear power window motor (M10/6) are activated.

- Unlock tubular frame and vario roof and open trunk lid
- Tubular frame and vario roof latches solenoid valve (Y55/1y5) is activated.

Stage 2 (operating time approx. 2 sec)
- The two-piece rear shelf is positively controlled mechanically by the main bearing with the folded vario roof.
- Lift folded vario roof in trunk (load assist)
- Load assist solenoid valve (Y55/1y6) is deactivated

NOTE: The hydraulic fluid is forced through the deactivated solenoid valve into the cylinders, which lift the folded vario roof

Stages 3 and 4 (operating time approx 6 sec)
- Close vario roof
- Close vario roof solenoid valve (Y55/1y3) is activated

- Rear shelf side flaps close
- Side flaps motor (M49/1) is activated.

Stage 5 (operating time approx. 4 sec)
- Close trunk lid and lock tubular frame and vario roof
- Tubular frame and vario roof latches solenoid valve (Y55/1y5) is deactivated.

Stage 6 (sequence occurs in parallel with locking in stage 5)
- Close front and rear side windows
- CAN message to right/left door control module (N69/1, N69/2)
- Left rear power window motor (M10/6) and
- Right rear power window motor (M10/5) are activated

Run-on time of hydraulic cylinders
The hydraulic cylinders in question remain activated for a short time even after reaching the individual limit switch positions in order to compensate for tolerances in the switching points of the limit switches

Interruption of sequence
- If the vario roof switch (N72s16) is released, the closing sequence is interrupted immediately at any time for safety reasons (stop function).
- Roll bar crash deployment active
- Temperature in hydraulic unit (A7/5) too high (warning in instrument cluster).