Self-Study Program

52
Control units
Initialisation
The initialisation for the open sky system's motors will be lost if the power supply to the motors or control
units is disconnected when the convenience CAN bus is awake. For instance, the initialisation for motor V1
will be lost if the convenience CAN bus is not in Sleep mode and the power supply to this motor is
disconnected.
Information on handling a lost initialisation
J245 Sliding sunroof control unit with V1 sliding sunroof motor:
– Roof section 1 can no longer be moved in the "OPEN" direction with the rotary switch. Manual closing can
only be initiated by pulling the button down. A teach-in cycle is performed directly after the manual closing
cycle.
J392 Rear sliding sunroof control unit with V146 rear sliding sunroof motor:
– The red LED in the tilt sunroof button 1 E582 is lit continuously at "term. 15 ON". Only a manual closing
cycle can be performed with the "CLOSE" button. A teach-in cycle is started directly after the manual
closing cycle.
J394 Sunroof roller blind control unit with V260 sunroof roller blind motor:
– The sunroof roller blind cannot be moved in the "OPEN" direction. Only a manual closing cycle can be
performed with the "CLOSE" button. A teach-in cycle is performed directly after the manual closing cycle.
Performing the initialisation and teach-in cycle
Info
The drive motors initialise themselves in the sliding sunroof or roller sun blind"closed" position. The teach-in
cycle is performed automatically directly after the initialisation is completed. During the teach-in cycle the
drive motors are adapted to the vehicle-specific mechanism, and the set-up is saved. During the teach-in
cycle, the switch must not be released since the teach-in cycle will otherwise become invalid and the drive
motor will again become reset to default.
Note
The anti-pinch protection feature is not active during the teach-in cycle.
Procedure in case of drive motors which have been reset to default
Hold the switch for the relevant motor, e.g. tilt sunroof button 1 E582 for V146, rear sliding sunroof motor,
manually in the "Close" position until the roof section - in this case it is roof section 3 - closes completely,
reopens completely and closes again.
If the roof section or the roller sun blind is already closed at the start of the initialisation, the relevant motor
opens the roof slightly and recloses it again completely.
During the teach-in cycle for cover 1 and during roller sun blind operation, the roof opens 200 mm and closes
again completely.
If the control switch is released during an initialisation procedure, the initialisation will not be accepted.
If the "close" button is pressed for longer than 10 sec. while the roof or roller sun blind is closed, the
respective drive motor will be reset to default and the teach-in cycle will start immediately.
Procedure in case of standardised drive motors
The teach-in cycle can only be initiated in the "closed" position.
If the "close" button is pressed for longer than 10 sec. while the roof or roller sun blind is closed, the
respective drive motor will be reset to default and the teach-in cycle will start immediately.