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zeus1975
HELP, my 10 plate s-max front wipers come at max speed when the car hits 25 mph. When i slow down below 25mph they stop again. they will work off the stick when going slow. soon as i speed up, they come at max speed again. And car is out of warrenty. ANY IDEAS?
jeebowhite
Welcome along...

You dont have an auto switch on your wipers do you?

Sounds to me like something may have clicked and then the switch has broken, unable to disable it?
zeus1975
HI, No I don't have auto's. they have always worked fine until yesterday. I read a thread via google that suggested discounecting the battery for 30 mins. willing to try anything. will go to a car electritian if the battery thing don't work
jeebowhite
Its as good a place to start as any. I would suggest, read your manual. See if it mentions anywhere, auto wipers, it might be that something else is triggering it, or a hidden switch / combination you have found has switched this feature on... hopefully the battery disconnect should resolve that.
zeus1975
Thanks for your replies, will post the outcome. fingers crossed
zeus1975
hey there, i disconnected the battery for 40 mins, reconnected it and the problem was still there. after looking at the manual, i then removed fuse F22. the problem has now stopped.when i replace the fuse with a new one, will the problem return? if it does, is it likely to be a short or as is more likely, a problem due to the alarm that i have been reading about. any advise would be great. all ideas are better than none
Stoney871
It has to be a short on the wiper system, probably a dry earth or something similar.
The relay may be another option to look into.
Dan62
[quote name='zeus1975' timestamp='1358973094' post='229686']
hey there, i disconnected the battery for 40 mins, reconnected it and the problem was still there. after looking at the manual, i then removed fuse F22. the problem has now stopped.when i replace the fuse with a new one, will the problem return? if it does, is it likely to be a short or as is more likely, a problem due to the alarm that i have been reading about. any advise would be great. all ideas are better than none
[/quote]

Windscreen wiper motors have a dynamic braking action when off by shorting the motor windings, stopping the motor quick and making the motor hard to turn.
It sounds like your dynamic braking circuit has failed and air is moving the blades while driving causing them to do another park cycle.

Its probably a bad relay or a contact in the wiper motor.
137699
There have been reports of odd wiper behaviour being linked to issues with the alarm system having gone faulty and sending erroneous messages on the CANBUS. You're not getting any "Alarm Service" messages on the dash are you?


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