Rear electric windows don't work...sometimes...?

MikeV8SE

New Member

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1,771

Location

Bucks

• Jan 15, 2012

• #1

OK, bit stuck on this one, hopefully someone can help. The rear electric windows mostly do not work on my RRC. Tpplies to both sides and both the switches on the back doors and on the centre console in the front.

When they do work, they both work from all four switches, so I think we can rule out a switch/motor fault.

What else could it be? My only thought is a faulty "lockout" switch (the one in the centre console that stops the rear switches working), but am I right in thinking the front console buttons should still operate the rear windows, or does it prevent the windows being opened or closed completely?

Any other ideas?

Cheers!

 

vougese39

Well-Known Member

Posts

1,039

• Jan 15, 2012

• #2

its a dry contact in the window lift ecu

 

MikeV8SE

New Member

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1,771

Location

Bucks

• Jan 15, 2012

• #3

vougese39 said:

its a dry contact in the window lift ecu

Click to expand...

They have their own ECU?? Where is that located, and how do I clean the contact?

 

DC_

New Member

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261

Location

The Glens of Bonnie Scotland.......

• Jan 16, 2012

• #4

Interested in this as my near side rear one does this. It goes down ok but sometimes doesn't come back up.

 

MikeV8SE

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Bucks

• Jan 16, 2012

• #5

It's both on mine - either they both work or neither of them do!!

 

MikeV8SE

New Member

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1,771

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Bucks

• Jan 16, 2012

• #6

Had a look on RAVE and can't see anything about a window ECU or contacts that may need cleaning. Any more info on this, please?

 

classic kev

Well-Known Member

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3,517

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on the side of a hill near Nannerch, N.Wales

• Jan 16, 2012

• #7

MikeV8SE said:

OK, bit stuck on this one, hopefully someone can help. The rear electric windows mostly do not work on my RRC. Tpplies to both sides and both the switches on the back doors and on the centre console in the front.

When they do work, they both work from all four switches, so I think we can rule out a switch/motor fault.

What else could it be? My only thought is a faulty "lockout" switch (the one in the centre console that stops the rear switches working), but am I right in thinking the front console buttons should still operate the rear windows, or does it prevent the windows being opened or closed completely?

Any other ideas?

Cheers!

Click to expand...

Look for the common link - the rear window relay. If the relay sticks or has an intermittent ground problem the rear windows will not work. BTW I don't think there is a window ECU on a classic. There is a one touch switch thing on drivers door but no ecu.

 

MikeV8SE

New Member

Posts

1,771

Location

Bucks

• Jan 16, 2012

• #8

Do relays tend to have intermittent faults? I always thought they either worked or didn't! Guess I can swap it over with a similar relay for something else (the front windows?) and see if that works!