Run-On Fans

[Dan DiBiase]

Ok, since we haven't much technical stuff here lately..... My cooling fans
were running on after the car was shut off and eventually drained the
battery. A little research indicated that the fan relay was the likely
culprit, tucked away in a sealed box under the cowl with the engine control
module. 20 minutes work and the box was open and ECM moved aside, to reveal
a puddle of water in the bottom of the box, and the relay stained with
corrosion about 1/3 of the way up it's 'face'. Ordered a new one and once
it arrive, will replace it.

http://i24.photobucket.com/albums/c30/ddibiase/Audi/927AF86E-717C-43EA-8433-6E1F211B935C_zps07lk4uat.jpg.html

But now I'm wondering how the water got in there. The top was completely
> dry, no cracks, although I did see that one of the 5 screws holding it
> closed was missing but not in the corner where the water was. And the box
> is actually open at the rear bottom, where some cables come in. But I don't
> see how water could have gotten in there, as there is sheet metal below
> that area and again, it wasn't in the corner where the water was. And we
> haven't had tons of rain here lately, nor do I recall having driven through
> any large puddles. I guess I will just replace the missing screw and
> tighten everything up when the new part arrives.
>

Dan D
'04 A4 1.8Tq MT-6
Central NJ USA


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