Component Tests and General Diagnostics

54 34 001 Check function of soft top







Check soft top adjustment to cowl panel.
Carefully close soft top until rotary striker (1) has retracted by approx. 1/3 into striker.
The soft top is centred by the guide pin (2) as it retracts into the guide.
The guide pins must move into the centre of the guide bushes.
Rotary striker (1) and guide pin (2) must close silently.
If necessary, adjust convertible top.
Close convertible top, open and then close again.
Check all line connections for fluid leaks.
If necessary, check fluid level.







Prerequisites:
The following requirements must be met to open or close the soft top:
- when the side windows are fully lowered
- Side windows must be initialized
- Rear window completely lowered
- when soft top compartment floor is lowered
- Driving speed less than 40 km/h
- rear lid must be closed
- Ambient temperature greater than -20 °C
- Terminal 15 activated
- whilst the button is pressed
- Vehicle is not in transport mode
- Hydraulic pump temperature must not be too high
Temperature is determined by CVM using a calculation module. Hydraulic pump can run for approx. 8 minutes without interruptions.
Once hydraulics have cooled, soft top can be operated again.







Check Control messages
It is not possible to open and close the soft top in certain situations.
Corresponding Check Control messages are displayed in the instrument panel for this purpose.
The Check Control messages serve to explain in closer detail the red or yellow LED on the button which lights up in the event of a fault.












In event of function problems:
- Check ambient conditions (e.g. soft top compartment floor, tailgate, rear window, etc.)
- Perform diagnosis on convertible top (mechanical components, hydraulic components, sensors etc.)
- Perform emergency operation (see Owner's Handbook)