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Part Number and advice


siearl
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Hi all,

Wipers started having a mind of its own today and not switching off, suspecting that the relay is stuck, does anyone agree / disagree and if so do you have a part number and suggested place to get the relay from.

Cheers

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Hi all,

Wipers started having a mind of its own today and not switching off, suspecting that the relay is stuck, does anyone agree / disagree and if so do you have a part number and suggested place to get the relay from.

Cheers

Si -

It won't be a relay - it'll be the park switch on the wiper motor at fault most likely. Part no 520160

Wiper motor is on the LHS of the dash, mounted to the bulkhead - you'll need to remove the very left most section of the lower dash to access it - the switch is the small white plastic unit clipped onto the motor itself.

Matt

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I think they're the same as the Series, so if you look here SIII Wipers you can see from the circuit that if pins 4 & 2 on the parking switch remain closed the wipers won't stop. This could be caused by the contacts welding together or something in the linkage that operates the switch breaking.

As Matt says, the switch is the favourite.

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would that cause it not to go intermittant as well

The park switch does do the intermittent too. AIUI, power is briefly applied to the motor to get the wipers up off their park position and then the park switch does the rest.

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The park switch does do the intermittent too. AIUI, power is briefly applied to the motor to get the wipers up off their park position and then the park switch does the rest.

Looking here Here

The dash switch powers the motor all the time it is switched on.

When it is turned to off the motor power is sustained via the "off" position of the dash swicth and 2&4 on the park switch. 2&4 are closed as long as the wipers are off the park position. Once they are at "park" 2&4 open and the motor stops. At the same time 1&2 close, shorting the motor. This has the effect of stalling the motor so that its momentum doesn't carry it off "park", if this happened 2&4 would close and the motor wouldn't stop.

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