My 94 S320 W140, express window up or down don't always work. I've tried resetting but again sometimes will reset, most of the time won't......frustrating. This is for all windows. Today it started raining during the drive , pussed the button for each window and they all worked. Turned the car off when I restarted the car and tried the windows the express would not work. Any Ideas.
Also noticed my windows don't close when locking with the remote. They used to, if left open and the remote lock was activated all open windows would close.

Zibby

In the trunk is a computer that does that job..sounds like that computer is having power issues..either a power supply problem..battery or charging system..if they check out then the computer itself is most likely the culprit.

__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator

Thanks Doc. Now I have somewere to begin I'll do a little checking
Today they worked flawlessly.

Zibby

You had better check your battery. Measure the voltage first. Then measure the voltage when starting. use an analog meter for this because digital ones can't follow the change in voltage. Also, clean your battery posts. Look for corrosion around the ground points.

__________________
Regards

Warren

Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor

Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL

ENTER > = (HP RPN)

Not part of the in-crowd since 1952.