Wipers stop working? - PeachParts Mercedes-Benz Forum

vinnyqua · #1 04-24-2006, 03:00 PM

Have a 92 400se benz and when it rains my wipers stop working after 10-15min of use but after a while of not using it it will start working again... any ideas..?
Thanx,
Vinny

shandy · #2 04-24-2006, 07:18 PM

Sounds like your windscreen wiper motor is being overloaded in some way and the thermal cutout is cutting the power to stop the motor from burning out. If you continue to use it as it is it will burn out the motor and they are expensive.
The most common cause of motor overload is when the sliding mechanism under the "turtle shell"cover of the wiper gearbox becomes dry and needs regreased. Initially, lift the cover at the base of the wiper arm and grease the pushrod that protrudes from the wiper drive , this is best done when the wiper arm is at full extension using the ignition switch to stop the wiper at this point. Use silicon or waterproof grease if available and coat as much of the pushrod as possible.
If this does not help you need to remove the "turtle shell "cover and,depending on your model that can be easy or a problem. Try greasing the pushrod first and let me know how that goes.
Geo.

haasman · #3 04-25-2006, 04:29 AM

Try spinning the fuse for the wiper. Corrosion can cause a weak connection. Also try removing the combination relay for the wiper and shake it gently. Hear anything loose? Either pop the cover and try resolder bad joints with fine tip soldering iron or replace.

Haasman

tvpierce · #4 04-25-2006, 12:06 PM

Ditto what Haasman said. I had the same symptoms... turned out to only be the fuse. I replaced mine.

Good luck.

Jeff Pierce