Hi,
Having procrastinated about stripping down and re-greasing the wiper mechanism on my 1990 300TD Estate, due to the fact that it had the early, screwed on aluminium rather than plastic clip on wiper mechanism cover (and not having read the suggestion to drill a hole in the bottom of the unit in which to spray grease!), my wipers have now stopped working altogether.
I am now trying to determine the cause. Unfortunately, it is not a blown fuse.
I have read that there is a plug that can be disconnected so that one can supply power directly to the wiper motor to test its operation. Can anyone please tell me where this is located and which pins to use?
Can you also please tell me if I should be able to hear the motor running, in the case of the gears being stripped and the wiper not moving?
I also understand that there is a thermal cut out for the wiper motor. Can you please tell me where this is located and whether they are ever known to develop a fault?
I can hear a relay click once, when I turn the wiper stalk control to the 1st and 2nd positions but not when I turn it to the 3rd. I suspect that I may have bad contacts in the switch, as playing around with the switch in the past has usually got the wipers to work (slowly) in the 1st and 2nd positions. Can you please tell me what I should hear and confirm which relay controls the wiper motor on the W124?
Any other suggestions would be appreciated.
For anyone else who has a similar problem, the following threads might be useful:
How to lubricate the wiper mechanism: http://forums.mercedesclub.org.uk/showthread.php?t=26200
Front screen wiper not working:
http://forums.mercedesclub.org.uk/showthread.php?t=34388&page=2
Complete windscreen wiper diagnostics & repair instructions:
http://mbworld.org/forums/c-class-w...-wiper-diagnostics-repair-instructions-2.html
N10 Relay, Soldering Repair, Wiper - Indicators & Hazards - Rear Window Demister.
http://forums.mercedesclub.org.uk/showthread.php?t=62702
Wiper has started working on it's own
http://forums.mercedesclub.org.uk/showthread.php?t=38617
I should like to take this opportunity to thank 'Dec' in particular for his very helpful posts.
Having procrastinated about stripping down and re-greasing the wiper mechanism on my 1990 300TD Estate, due to the fact that it had the early, screwed on aluminium rather than plastic clip on wiper mechanism cover (and not having read the suggestion to drill a hole in the bottom of the unit in which to spray grease!), my wipers have now stopped working altogether.
I am now trying to determine the cause. Unfortunately, it is not a blown fuse.
I have read that there is a plug that can be disconnected so that one can supply power directly to the wiper motor to test its operation. Can anyone please tell me where this is located and which pins to use?
Can you also please tell me if I should be able to hear the motor running, in the case of the gears being stripped and the wiper not moving?
I also understand that there is a thermal cut out for the wiper motor. Can you please tell me where this is located and whether they are ever known to develop a fault?
I can hear a relay click once, when I turn the wiper stalk control to the 1st and 2nd positions but not when I turn it to the 3rd. I suspect that I may have bad contacts in the switch, as playing around with the switch in the past has usually got the wipers to work (slowly) in the 1st and 2nd positions. Can you please tell me what I should hear and confirm which relay controls the wiper motor on the W124?
Any other suggestions would be appreciated.
For anyone else who has a similar problem, the following threads might be useful:
How to lubricate the wiper mechanism: http://forums.mercedesclub.org.uk/showthread.php?t=26200
Front screen wiper not working:
http://forums.mercedesclub.org.uk/showthread.php?t=34388&page=2
Complete windscreen wiper diagnostics & repair instructions:
http://mbworld.org/forums/c-class-w...-wiper-diagnostics-repair-instructions-2.html
N10 Relay, Soldering Repair, Wiper - Indicators & Hazards - Rear Window Demister.
http://forums.mercedesclub.org.uk/showthread.php?t=62702
Wiper has started working on it's own
http://forums.mercedesclub.org.uk/showthread.php?t=38617
I should like to take this opportunity to thank 'Dec' in particular for his very helpful posts.