Re: Electric mirrors - www.AudiV8.com - Audi V8 Forum / Audi A8 Forum

There are several causes for the water ingress.
The three main issues are-

Windscreen repairs.
This car has had a very poor repair in the past, resulting in a fair amount of rust. I haven't had the windscreen out, yet, to see how bad, but I am sure there is perforation, and certainly the integrity of the bonding has been compromised. The windscreen feels loose along the lower edge, where water can collect in the gutter.

Leaves.
In the scuttle area, the collection of leaves over time has built up, blocking the drainage. Water was able to build up significantly. It really is worth taking the plastic cover off, and making sure that the drain is cleared. A long plastic rod, or something similar can be used. The drain goes under the aircon components, and drains out somewhere near the transmission tunnel.

Alarm installations
This car had a dealer fit alarm early in its life. It was installed so badly, with holes cut into the rubber boots of the ECU loom.
Water damage has also killed the motronic ecu. I had a spare, fortunately. the original ecu wasn't firing injectors, and some diagnostics weren't functioning.

Several of the control boxes, and even the relay panel under the carpet, are actually in areas where water can be a factor due to bad windscreen fitting.

So far, I've replaced-
Motronic

Fixed-
Mirror module
Windows module
Seat controller
Central locking pump

Still to do- aircon blower

This is all on my Lago 4.2, for which I am running a sort of restoration thread.

85 WR quattro
90 V8 Silver, 91 V8 Black, 93 V8 Lago
93 100e quattro V6. Titan, i think

Edited by Mark Hanman (26/03/2015 08:37)

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