Special Tools; Power Windows - BMW 5251 Service Manual

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Door Windows
1
This repair group covers door glass, window regulator and
power window motor repair information.
CA U JIO&
All E39 models are equipped with side-impact airbags in the
front doors. Some models are also equipped with airbags in
the rear doors. Be sure to read the airbag warnings and cau-
tions in 721 Airbag System (SRS).
Electric window switch replacement is covered in 612
Switches.
The windshield, rear window, fixed rear doorglass, and cargo
compartment glass (Sport Wagon only) are bonded using
special adhesives and tools. It is recommended that bonded
glass replacement be done by an authorized BMW service fa-
cility or an automotive glass installer.
Special tools
Some window repair operations require special tools.
Power windows
-
Power window features in E39 models include:
Control of the front and rear door window motors is carried
out directly by the General Module (GM Ill).
One-touch operation in both directions on all four windows.
Cable type window regulator used for all door windows.
.
Anti-trap protection provided by pressure sensitive finger
guard.
Right front and each rear door has a single window switch
located in door handle trim.
Rear door window switches can be deactivated by press-
ing child lock-out switch in the driver's window switch block.
Convenience closinglopening of the windows from driver's
loci( cylinder or convenience opening only from remote un-
lociting feature (FZV) remote key.
Window (FZV) operation can be owner customized with
Car Memory function. See 515 Central Locking and Anti-
Theft.
After ignition is switched off, electric windows can be oper-
ated until a door is opened or until I 6 minutes has elapsed.
The GM IiI bases window motor end position on current
draw (load). There is a maximum window motor run time of
6
seconds. The motor is then switched off even if the end
position load sensor fails.