GF77.30-P-3006SK Temperature Limits For Hydraulic Component For Vario Roof, Function

GF77.30-P-3006SK Temperature Limits For Hydraulic Component For Vario Roof, Function
- up to model year 08

Function
It is possible to actuate the unlocked Vario roof in both operation directions until a hydraulic oil temperature of 85 °C is exceeded. The temperature sensor (A7/5b1) in the soft top mechanism hydraulic unit (A7/5) triggers the overload protection feature when the motor is overloaded thermally.The signal for triggering the overload protection is directly read in by the power soft top control unit (N52)

Hydraulic oil temperatures in °C:

Open Vario roof from closed non-actuated state:
Enable < 75 °C
Disable/Interrupt >85 °C

Subsequently close or relock Vario roof:
Enable < 85 °C
Disable/Interrupt >90 °C

Moreover, the outdoor temperature is considered when checking the Vario roof for failure.The outside temperature is measured by the outside temperature display temperature sensor (B14) and is read in by the driver-side rear SAM control unit with fuse and relay module (N10/1)It transmits the message to the power soft top control unit (N52) via controller area network bus class (interior) (CAN B).

Failure consideration for power soft top control unit (N52) at an outside temperature less than minus 15 °C:
^ No error on temperature sensor (A7/5b1) of soft top mechanism hydraulic unit (A7/5)
^ No display in instrument cluster (A1) with time-out error
^ No storage with time-out error

Failure consideration for power soft top control unit (N52) at an outdoor temperature of greater than minus 15 °C:
^ Errors are stored
^ Displays in instrument cluster (A1) are activated