54 34 001 Checking function of EH convertible top

WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2010 BMW M6, 2010 BMW 650i, 2009 BMW M6, 2009 BMW 650i, and 2008 BMW M6. However, it is still accessible from the selected car via links, so may be relevant.

Carefully close convertible top until rotary latch (1) has retracted by approx. 1/3 into striker.

Rotary latch (1) and journal (2) must close silently.

If necessary, adjust convertible top .

The convertible top is centered by the journal (2) as it retracts into the guide.

Close convertible top, open and then close again.

Check all line connections for fluid leaks.

If necessary, check fluid level .

Fig 1: Identifying Rotary Latch And Journal

Courtesy of BMW OF NORTH AMERICA, INC.

Function description (open/close):

Opening and closing of convertible top is only possible:

when the side windows are slightly lowered
when the rear window is completely lowered
when the convertible top compartment base is lowered
speed must be under 30 km/h
rear lid must be closed
outside temperature is between -10 °C and +80 °C
hydraulic pump motor ≤90 °C
from ignition lock position "R" (radio setting)
while control switch in instrument panel is pressed

Fig 2: Opening And Closing Of Convertible Top

Courtesy of BMW OF NORTH AMERICA, INC.

In event of function problems:

Check ambient conditions (e.g. convertible top compartment base, rear lid, rear window etc.)
Perform diagnosis on convertible top (mechanical components, hydraulic components, sensors etc.)
Perform emergency actuation