Windscreen Wiper Fail..

[enuff_zed]

I have same problem with mine now wiper relay replaced but still happening I’ve been told it could be an electrical fault, they work once I stop then restart engine but only work for about 2 to 3 mins then stop again happened to me on m6 yesterday in torrential rain , was pretty scary tbh my car is an e85 2.5i 2006 facelift model
Does anyone have any ideas I’m taking her to the garage next Monday I want to sound like I have lots of information so they can get it right as cheap as possible
Many thanks in advance

Welcome to the forum.
If you read the post one above yours you'll see the potential answer. Not a relay, but grease on the contacts. Try cleaning that up and se what happens.
Whereabouts are you? Might be someone close by who can do it a lot cheaper than a garage?

[firewire75]

I’m based in Preston area

[colb]

Shame you are too far away from me otherwise I would have offered to do it down here in Zedshed Cymru, simple enough to take the scruttle cover off and take the wiper motor out with the linkages then take the backplate off and clean the grease off the contact plate. Doing this would be the first course of action before throwing parts at it.

[firewire75]

Great thank you

[marktjm3]

Wow old thread revival, not surprising given how much rain we have been having of late.
Usual causes of wipers playing up are due to grease migration from the worm drive that spreads over the metal electrical contact plate inside the motor housing, often causing bad wiper parking when switched off. The grease interferes with the electrical contact causing the motor to be delayed in switching off and stopping the wipers in the wrong place. Simple remedy is to remove the wiper unit as a whole after taking the wiper arms off and removing the scuttle cover to reveal the whole unit which is secured by two bolts/nuts and one plastic clip in the centre. Lift the unit out and turn it over, remove the six bolts off the cover plate to reveal the inner workings. Clean all the grease off the metal contact plate thats revealed to restore the good electrical contact. The worm drive only needs a minimum amount of grease on it so dont put too much on it or it will migrate again causing the same issue with parking in the wrong place.
The other issue that arises is the linkage popping off their ball joints, you can restore them using a repair clip that can be obtained on ebay here https://www.ebay.co.uk/itm/BMW-Z4-E85-E ... SwTqtd94mW
Well worth taking the scuttle cover off annually to clean the end and centre scuttle drains and dosn't take long to pull the wipers out to clean the grease off whilst your in there.

Thank you!

Same problem and this worked.

The toughest part was removing the scuttle, as the fixings had degenerated

[colb]

Yes the clips usually break as you get the scuttle cover off, best to arm yourself with a set of replacement clips from BMW if you are doing this job.
https://www.realoem.com/bmw/enUS/showpa ... Id=51_4961
Items 28, 2 and 6 are the clips and rivit fittings used on the cover.