Hi guys!
I have a 1999 C220 CDI with a strange wiper problem. I have extensively read many threads on this but my problem seems to be different to everyone elses. Issues are:
1) Sometimes the wiper will randomly switch itself on in the slow speed position, make a random number of sweeps (anywhere from 2 sweeps to a solid 20 seconds worth), then shut off and park. This can happen at any time.
2) If I switch it to intermittent, 80% of the time it will run at slow instead.
3) If I switch it to slow, it will work fine but has a habit of getting stuck at various points in the screen. I can fix this by changing setting, then quickly changing back.
4) If I switch it to fast, it will fast sweep for about 2 seconds, then slow down to slow speed, and will once again stop sometimes at random places
In any mode, if I switch the wiper off, it will most likely continue at slow speed for some time before it finally turns off.
Note, the car DOES NOT have a rain sensing wiper. The mechanism is smooth, well lubricated, and parks where it should.
I don't think this is a stalk problem, as it changes mode correctly as you would expect.
I think it is a problem with the motor, in particular the way the motor decides to start and stop itself. I took the cover off and the contacts and slip rings looked clean and unworn. However I don't think this is an OE motor, it seems to be branded 'Vista' or something. Maybe its just a cheap replacement motor and the slip rings aren't manufactured very well??
Or maybe its a relay? My car seems to be the newer type with the 2 small yellow relays rather than the N20.
Any insight would be much appreciated! This is becoming quite a problem now that winter is on its way.
Tom
I have a 1999 C220 CDI with a strange wiper problem. I have extensively read many threads on this but my problem seems to be different to everyone elses. Issues are:
1) Sometimes the wiper will randomly switch itself on in the slow speed position, make a random number of sweeps (anywhere from 2 sweeps to a solid 20 seconds worth), then shut off and park. This can happen at any time.
2) If I switch it to intermittent, 80% of the time it will run at slow instead.
3) If I switch it to slow, it will work fine but has a habit of getting stuck at various points in the screen. I can fix this by changing setting, then quickly changing back.
4) If I switch it to fast, it will fast sweep for about 2 seconds, then slow down to slow speed, and will once again stop sometimes at random places
In any mode, if I switch the wiper off, it will most likely continue at slow speed for some time before it finally turns off.
Note, the car DOES NOT have a rain sensing wiper. The mechanism is smooth, well lubricated, and parks where it should.
I don't think this is a stalk problem, as it changes mode correctly as you would expect.
I think it is a problem with the motor, in particular the way the motor decides to start and stop itself. I took the cover off and the contacts and slip rings looked clean and unworn. However I don't think this is an OE motor, it seems to be branded 'Vista' or something. Maybe its just a cheap replacement motor and the slip rings aren't manufactured very well??
Or maybe its a relay? My car seems to be the newer type with the 2 small yellow relays rather than the N20.
Any insight would be much appreciated! This is becoming quite a problem now that winter is on its way.
Tom
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