Car problem - Won't start (Passat)... Fuse/Short? - HotUKDeals
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Car problem - Won't start (Passat)... Fuse/Short?

tightasagnatschu Avatar
5y, 8m agoPosted 5 years, 8 months ago
After having a rear door panel off yesterday to check the electric window operation my B5.5 (tdi 130) won't start today at all.
I have checked the window operates and that the 'puddle' light is still on and both are as normal.
Could I have created a short that is preventing the car from starting?

On first try today all the doors locked themselves when trying the ignition but the battery didn't seem drained. Now after several more attempts battery looks drained as interior lights (instrument panel, etc) are dull until a relay audibly clicks in.

Puzzled - any help or advice would be really welcome.
Self-inflicted problem?
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tightasagnatschu Avatar
5y, 8m agoPosted 5 years, 8 months ago
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1 Like #1
Sounds likely to be an electrical issue to be honest. I would recheck the wiring to the window you looked at. Failing that I can only guess that you coudl remove the fuse for the eletric windows to see if that helps but that is only a temp fix.

If the battery is drained it could be either the repeated attempts to start the car (but this would usually happen if the starter motor actually engaged) or theres a short or something causing a drain to the battery itself.

I'm no expert though but hopefully that helps.
banned 1 Like #2
have you altered any alarm sensors that could of activated the immobilizer
1 Like #3
Try jump starting or charge the battery, May be you ran down the battery when trying to fix the window?, Check all fuses and replace as necessary, Could be be shorting, In that case a fuse would of gone and when replacing the fuse it's likely to blow again if shorting.
1 Like #4
What shauneco says ^ Should be around the area of work, could also be a poor ground causing it to be unable to start (due to a floating voltage) Doesnt sound like spark/glow plugs either so most probably it is a short as I doubt youv knocked a ground away ?
#5
Thanks for the replies, managed to get it going (more by luck than good judgement).

Had a swimming pool underneath battery and ECU (again), common/design fault inherited from A4's and thought on fixing it last time it would stay away.

Fingers crossed corrosion hasn't taken hold or it'll be a hair dryer job.

'Liked' all - cheers

Edited By: tightasagnatschu on Mar 29, 2011 19:08
#6
Hopefully the ECU hasnt been completely bathed. could try put a kinda spongue in or around that area if this has happened before, should stop it happening for a wee while again
#7
DannyM
Hopefully the ECU hasnt been completely bathed. could try put a kinda spongue in or around that area if this has happened before, should stop it happening for a wee while again


It's a common fault inherited from A4's - Plenum drain hole have rubber grommets but any slight sludge or leaves, etc block them up... problem is the only way to get at them is to take out the battery and the battery holding plate.
To hopefully prevent it happening again I've completely removed the rubber seals (shouldn't block as easily).

Cheers.

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