Wipers not working

BumpyZ4 · Post by **BumpyZ4** » Sun Aug 22, 2021 3:09 am

Can you see through the "L" shape part of the cover to see if there are relays underneath?

McTyke · Post by **McTyke** » Mon Aug 23, 2021 1:17 pm

Not really.
Well fitted the used fuse board taking care to ensure all relays and fuses were exactly the same. Fiddly but not too bad. Still wipers don't work

So car is going in to my local Indy - Colin at BMS. Hopefully he will figure it. Will keep thread up-dated.

bigwinn · Post by **bigwinn** » Mon Aug 23, 2021 1:29 pm

I’m proper scratching my head on this one

enuff_zed · Post by **enuff_zed** » Mon Aug 23, 2021 1:33 pm

bigwinn wrote: ↑Mon Aug 23, 2021 1:29 pm I’m proper scratching my head on this one

Same here. It seems every component has been checked except the wiring?

My next suggestion would be to remove the wiper motor...................and fit a new car to it.

Zulu4 · Post by **Zulu4** » Mon Aug 23, 2021 4:40 pm

enuff_zed wrote: ↑Mon Aug 23, 2021 1:33 pm My next suggestion would be to remove the wiper motor...................and fit a new car to it.

McTyke · Post by **McTyke** » Thu Sep 23, 2021 10:45 am

So finally. Seems there was no signal coming from the GM5 module to the wipers. Now I had had this repaired when I got the car as the central locking was not working. As you may know, when the GM5 is disconnected several components don't work - including wipers. So clearly there is something in the GM5 critical to wiper operation. Note - it was not throwing any error messages. So got a used GM5 of E-bay for £70 and once fitted and coded to car - wipers working. Booked in for MOT later so hopefully the lady who bought the car from me will have her back for the weekend. Hopefully I will be re-warded with some good karma considering the lengths I have gone to to sort out a sold as seen Z4. I didn't want her to get ripped off by some unscrupulous garage. Big thanks to Colin at BMS for his patience and knowledge.

enuff_zed · Post by **enuff_zed** » Thu Sep 23, 2021 11:20 am

McTyke wrote: ↑Thu Sep 23, 2021 10:45 am So finally. Seems there was no signal coming from the GM5 module to the wipers. Now I had had this repaired when I got the car as the central locking was not working. As you may know, when the GM5 is disconnected several components don't work - including wipers. So clearly there is something in the GM5 critical to wiper operation. Note - it was not throwing any error messages. So got a used GM5 of E-bay for £70 and once fitted and coded to car - wipers working. Booked in for MOT later so hopefully the lady who bought the car from me will have her back for the weekend. Hopefully I will be re-warded with some good karma considering the lengths I have gone to to sort out a sold as seen Z4. I didn't want her to get ripped off by some unscrupulous garage. Big thanks to Colin at BMS for his patience and knowledge.

Well done for persevering.
What led you to that then?

McTyke · Post by **McTyke** » Thu Sep 23, 2021 11:33 am

I had tried everything else - it was Colin at BMS who then traced it to the GM5 and it was a case of it really can't be anything else. Still a nervous wait until this morning when he told me the wipers were working again. I had contacted the company who repaired the GM5 asking if he had come across any issues like this previously. He reckons wiper failure is nearly always motor or external relay and any issues relating to GM5 would throw up error codes. Clearly not the case. I had trawled the internet for hours and found no mention of GM5 and wiper failure.
Hope this helps anyone who have similar issues.

enuff_zed · Post by **enuff_zed** » Thu Sep 23, 2021 11:36 am

McTyke wrote: ↑Thu Sep 23, 2021 11:33 am I had tried everything else - it was Colin at BMS who then traced it to the GM5 and it was a case of it really can't be anything else. Still a nervous wait until this morning when he told me the wipers were working again. I had contacted the company who repaired the GM5 asking if he had come across any issues like this previously. He reckons wiper failure is nearly always motor or external relay and any issues relating to GM5 would throw up error codes. Clearly not the case. I had trawled the internet for hours and found no mention of GM5 and wiper failure.
Hope this helps anyone who have similar issues.

Indeed, thanks for detailing it all for future reference.

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