Jonnyb1990 · Jun 16, 2015

Hello !

I know its summer and theres no real need for them yet (readies umbrella)

Had my 97 5 door 300tdi truck welded up at the weekend (pictures of the remains of a rear spring hanger) and for what ever reason both my rear Wiper and from front wipers (intermittent only) has ceased working,

Got a multi meter and the loom in the rear door is sound (powered up motor from a bypass cable) so guessing something has melted but I dont know where the loom goes thought the interior !

With the intermittent wipers I'm guessing a relay has gone west as the buzzer for the lights has also stopped working, where is this relay located ?

Any suggestions appreciated !

Cheers

ShaunPDisco · Jun 16, 2015

On mine the front wipers caused a problem when a small lug in the switch stalk failed. New stalk solved problem. I also had an intermediate fauly on the rear but could never find a problem although it does seem that rear wiper doesnt work if drivers door open!!!!!

discool · Jun 16, 2015

Wiper delays along with lights-on buzzer is controlled by the MFU on board processor and its relays, you may also find that your rear fog-lamps don't work either.

Check that you have plug the MFU back in correctly after it was removed for the welding .. U did remove it to protect electronics didn't u?
Relays are behind both the front kick panels.

discool · Jun 16, 2015

ShaunPDisco said:
On mine the front wipers caused a problem when a small lug in the switch stalk failed. New stalk solved problem. I also had an intermediate fauly on the rear but could never find a problem although it does seem that rear wiper doesnt work if drivers door open!!!!!

Or any of the other doors

Jonnyb1990 · Jun 16, 2015

discool said:
Wiper delays along with lights-on buzzer is controlled by the MFU on board processor and its relays, you may also find that your rear fog-lamps don't work either.

Check that you have plug the MFU back in correctly after it was removed for the welding .. U did remove it to protect electronics didn't u?
Relays are behind both the front kick panels.

That would be a no,

Battery was disconnected and removed from vehicle and terminals capped to prevent arcing,

Where is the MFU ?

Looks like a trip to the scrappy is in order !

discool · Jun 16, 2015

Jonnyb1990 said:
That would be a no,

Battery was disconnected and removed from vehicle and terminals capped to prevent arcing,

Where is the MFU ?

Looks like a trip to the scrappy is in order !

MFUs are positioned on the rear of the internal fuse board, there's two types one is black the other is cream, they are not interchangeable.

Paulmitchell1984 · Jun 17, 2015

iv never had to disconnect the mfu for welding and never had an issues, lucky??

as above, are all doors closed for the wipers to work? i thought i had an issue and it was because the door was open

Jonnyb1990 · Jun 17, 2015

Yeah all closed up, came to life this morning, raided a scrappy and got all the fuses i could get me grubby mits on, will try them at the weekend !

Jonnyb1990

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