S40 haunted wipers!!

south coast · Jul 4th, 2018, 12:12

Hi there Volvo folk,

I'm new to Volvos. Really like my '04 S40 2.4 which I got last year.

The only niggle is the (seemingly common-ish) problem with the wipers randomly coming on!

I've trawled the forum and have had the ECM (?) unit out for cleaning. This didn't work, so I've done the same with the fuse box under the bonnet. No joy.

Perhaps the connections to the motor are corroded. However, I can't seem to get to it though, as the windscreen cowl won't budge.

Any help gratefully received

domhart10 · Jul 5th, 2018, 14:06

do you have the auto wipers option which automatically come on when there is even a little drop of rain? maybe check the sensor for that?

south coast · Jul 5th, 2018, 19:11

Quote:

Originally Posted by domhart10

do you have the auto wipers option which automatically come on when there is even a little drop of rain? maybe check the sensor for that?

Hey man, thanks for replying.

Yes, I do have that option I think. I haven't used it, as far as I know though..

Do you know where the sensor is located by any chance?

Sysyphus · Jul 5th, 2018, 20:52

Rain sensor is top center of the windscreen... but auto-wipers are off when you start up until you turn them on... you see the little wiper/raindrop icon in the bottom LED above the mileage

south coast · Jul 6th, 2018, 12:33

Quote:

Originally Posted by Sysyphus

Rain sensor is top center of the windscreen... but auto-wipers are off when you start up until you turn them on... you see the little wiper/raindrop icon in the bottom LED above the mileage

Interesting..

When the wipers come on by themselves, I try switching the 'auto' function on/off but the icon never lights up. Not sure if that proves anything though!

Is the sensor in the module that has the rear-view mirror attached?

Does it have it's own fuse?

south coast · Jul 6th, 2018, 22:24

Well, it's not the sensor.

The wipers came on again of their own accord. I found the sensor and disconnected it.

The wipers kept going...

Jul 4th, 2018, 12:12	#1
south coast Junior Member Last Online: Jan 2nd, 2022 20:08 Join Date: Jun 2018 Location: worthing	S40 haunted wipers!! Hi there Volvo folk, I'm new to Volvos. Really like my '04 S40 2.4 which I got last year. The only niggle is the (seemingly common-ish) problem with the wipers randomly coming on! I've trawled the forum and have had the ECM (?) unit out for cleaning. This didn't work, so I've done the same with the fuse box under the bonnet. No joy. Perhaps the connections to the motor are corroded. However, I can't seem to get to it though, as the windscreen cowl won't budge. Any help gratefully received

Jul 5th, 2018, 14:06	#2
domhart10 Volvo S40 Last Online: Yesterday 19:38 Join Date: Mar 2015 Location: Chichester	do you have the auto wipers option which automatically come on when there is even a little drop of rain? maybe check the sensor for that? __________________ ----------------------------------------- Current: 2009 Volvo S40 T5 Progress Thread: https://www.volvoforums.org.uk/showthread.php?t=271945 Previous Volvo: 2008 S40 SE Lux R Design 2.0D

Jul 5th, 2018, 20:52	#4
Sysyphus Senior Member Last Online: Apr 26th, 2024 19:51 Join Date: Dec 2016 Location: Suburban Philly	Rain sensor is top center of the windscreen... but auto-wipers are off when you start up until you turn them on... you see the little wiper/raindrop icon in the bottom LED above the mileage

Jul 6th, 2018, 22:24	#6
south coast Junior Member Last Online: Jan 2nd, 2022 20:08 Join Date: Jun 2018 Location: worthing	Well, it's not the sensor. The wipers came on again of their own accord. I found the sensor and disconnected it. The wipers kept going...

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