Component Tests and General Diagnostics

54 34 001 - Checking function of EH convertible top





Warning!
You are exposed to the risk of trapping body parts when working on the installed or removed convertible top.





Convertible top is centered by pin (2) during insertion into guide and locked by rotary latch (1).
Carefully close convertible top until rotary latch (1) has retracted by approx. 1/3 into striker.
Rotary latch (1) and pin (2) must close correctly and virtually silently.
Open and close convertible top at least 3 times.
Check all line connections for fluid leaks.
If necessary, check fluid level Testing and Inspection.





Function conditions, convertible top:
Opening and closing of convertible top is only possible when:
- battery voltage greater than 11.5 volts
- fewer than 5 opening and closing operations in succession (pump protection inactive)
- rear side windows are lowered
- front side windows are lowered slightly
- convertible top compartment floor is lower position
- rear lid closed
- speed is lower than 40 km/h
- outside temperature is above -12 °C
- from ignition lock position "R" (radio setting)
- hydraulic pump motor is not overheated
- control switch is pressed





Check Control messages
It is not possible to open and close the convertible top in certain situations.
Corresponding Check Control messages are displayed in the instrument cluster 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.










Only when you have excluded the function conditions as fault sources can you start convertible top diagnosis.