BMW Z 4 2.0i wiper problem

Post Reply
stewmont
BMW Enthusiast
Posts: 2
Joined: 10 Mar 2014, 22:03
Car model: BMW Z4 2008 2.0i

BMW Z 4 2.0i wiper problem

Post by stewmont » 10 Mar 2014, 23:46

Hello, my Bmw Z 4 had been stored in my garage over the winter, I used it yesterday for the first time, when I switched the wipers on they would not stop when switched off, however they did stop after about 10 sweeps but not in the park posistion, they would not switch on again from the wiper switch and the washers would not work also, if I then turned the ignition switch off and on they would start from the wiper switch, do about 10 sweeps and then stop at random, again the wiper switch inaffective.

Can you help me please with this problem

Thanks

Stewmont

User avatar
lizzie
BMW Enthusiasts Ladies
Posts: 6666
Joined: 18 Oct 2011, 12:17
Car model: F22 M235i
E63 635d
+ 8
Location: Bath
Location: Bath

Re: BMW Z 4 2.0i wiper problem

Post by lizzie » 11 Mar 2014, 06:44

Hopefully someone will be along with some suggestions. :-)


Sent from Lizzie's iPhone using Tapatalk

User avatar
M60NJP
Site Owner
Posts: 23366
Joined: 12 Oct 2011, 13:22
Car model: 135i M Sport
Isetta 300
Location: Bucks
Location: Buckinghamshire
Contact:

Re: BMW Z 4 2.0i wiper problem

Post by M60NJP » 11 Mar 2014, 08:04

This seems to be a regular issue with both Z3 and early Z4s and is one of two things. The actual wiper stalk in the cabin can be known to fail due to corrosion, but as your seem to work they much be switching current of some sort.

I'm no expert on Z4s but I'm told buried away inside the wiper motor housing is the motor (of course!) and this is liberally coated with white grease from the factory. Somehow this grease degrades and forms a conductive circuit across the connections which confuses the hell out of the motor. It's an easy job to clean it all away (electrical circuit cleaner) but a right pain to access...........

stewmont
BMW Enthusiast
Posts: 2
Joined: 10 Mar 2014, 22:03
Car model: BMW Z4 2008 2.0i

Re: BMW Z 4 2.0i wiper problem

Post by stewmont » 11 Mar 2014, 16:05

Hello, many thanks for your message. I took the panel off that covers the wiper motor and found a mice nest next to the motor, the mice had eaten one of the wires going to the motor, they had eaten about 50mm both the insulation and the copper conductor, I soldered in a new wire and now it's working again as it should.
Best wishes
Stewart

User avatar
lizzie
BMW Enthusiasts Ladies
Posts: 6666
Joined: 18 Oct 2011, 12:17
Car model: F22 M235i
E63 635d
+ 8
Location: Bath
Location: Bath

Re: BMW Z 4 2.0i wiper problem

Post by lizzie » 11 Mar 2014, 16:53

Great news and thanks for letting us know the outcome. :-)


Sent from Lizzie's iPhone using Tapatalk

Post Reply

Return to “Electrical”