Got a 2012 basic fabia for our daughter, been fine to date, but the front wipers will now not turn off, even with the ignition off. Only way I've found is to remove the fuse ( tried leaving overnight & then reinserting it & they start again, ignition is off). With the ignition on the position of the wiper switch makes no difference to the speed of the wipers if that is at all relevant.

Is this likely to be a problem with the relay (as per https://www.briskoda.net/forums/topic/473170-wiper-relay-replacement/ ) or is it more likely to be the park position sensor on the motor? Or something else...

Shouldnt work with ignition off and key removed. Maybe a stuck relay if it uses one or bad switch. Not sure which relay does wipers. Had a look online but couldnt find out any info.

Alasdair

The relay will be soldered onto the circuitboard of the BCM, but your BCM will not resemble either of the ones shown in the linked thread.

I have no experience with this later BCM type (just two large connectors).

Expecting one in the post shortly though, so could potentially examine circuitry associated with front wipers.

@AlaricT did you get this solved?

I have now identified the relay that I believe must be responsible in this version of BCM, and have some on order which should be with me very soon.

Hi, no I've not managed to confirm any thing, 48 hours after posting I started it to move it under cover & they stopped... Not had a chance to dig more since

I'll aim to get some info up this evening or at the weekend.

Circuit is rather simple within the BCM, at least with regard to the power outputs to wiper motor.

Input from permanent 12V fuse in on one pin, a relay switches this when wiping is requested through to another relay. The second relay switches between normal and high speed wiping, each having its own pin and wire to the wiper motor.

The first relay, if contacts stick/weld closed, will result in wipers going continuously until fuse is removed.

Main difference from earlier BCM versions is that these two relays are separate tiny ones here, versus a single, slightly larger, dual relay in previous versions.

Edited 8 January8 Jan by Breezy_Pete