Series 3 Wiper strange behaviour

85Santana3 · Dec 17, 2020

Hello
My windshield wipers work well all the time except for when it rains. When I turn them on nothing happens for the first few minutes then slowly slowly it comes to life with very choppy and slow motion. 10 minutes later they are working as normal and then they start to pick up speed and work much faster than wiper should. Any idea why this is happening? As I mentioned this only happens when it is raining. In dry weather they are normal.
tx in adv

Bobsticle · Dec 18, 2020

Brushes? Commutator? Binding?

sounds like something is either binding, clogging up the electrics or worn brushes.

Colthebrummie · Dec 18, 2020

Bobsticle said:
Brushes? Commutator? Binding?

sounds like something is either binding, clogging up the electrics or worn brushes.

If this was the case, surely they would play up when it's not raining too. I'd be looking for water Ingres to the electrics.

Col

85Santana3 · Dec 28, 2020

Col the strange thing is that after 15 minutes of driving while it is still raining the wipers start to come back to life and pick up speed. Surely water is a factor but it could not be evaporated during those 10-15 minutes. Question is where can it be that possibly heat will evaporate it in such a time?
Merry Christmas and happy new year (a much better year hopefully)

Fatrover · Jan 10, 2021

Happened to mine. Eventually motor died. Turned out it was just a buggered motor , original one, insides all full of crap. Replaced the whole thing, motor, wheelboxes etc.

Series 3 Wiper strange behaviour

85Santana3

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Bobsticle

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Colthebrummie

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85Santana3

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Fatrover

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