Reversing lights/heated rear window out of action - Renault Forums :: Independent Renault forum

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post #1 of 4 (permalink) Old 15th February 2007 Thread Starter
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Cool Reversing lights/heated rear window out of action

On my Laguna II, the reversing lights and heated rear window have packed up. The fuse has blown and if i replace it it will pop again when i put the car in reverse gear.

When i bought the car, all worked well and I could start it without pressing the clutch in. Since the electrical probelm has developed, I now have to press the clutch in to start the car.

Anybody experienced similar problem to this and know what the solution will be?

Its going in to the garage next week for repair as its under warranty still, but wondered what it might be?

Suppose with electrical problems it could be anything; chafed wire creating a short....but why could this impact on the way the car is now started?

Answers on a post-card....
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post #2 of 4 (permalink) Old 16th February 2007
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sounds like a short
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post #3 of 4 (permalink) Old 16th February 2007
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The car as to be either inneutral or press the clutch in.
I wouldn't mind bettingthis sensor is faulty - which determines whther the clutch is pressed or not. Itcould also be the cause of your short circuit problem.
If the fuse blows when you select reverse you could either be catching a wire somewhere or the switch is shorting out.

At least your car is under warranty. Let us know how you get on, it would be intereting to hear the outcome for future reference.

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post #4 of 4 (permalink) Old 16th February 2007
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I think Hondo had a similar problem with the dodgy dealer towbar wiring on his car. Every time he selected reverse with the caravan on, the fuse blew. After that, the car would only start with the clutch held down. My guess is that the neutral position detector switch runs off the reversing light circuit.

I'd go with ST's advice and bang it into the dealer while it's still under warranty. But if you really want to investigate this further, then try the following:
1) Do you by any chance have a towbar fitted? If so, I'd check the towbar wiring before looking anywhere else and consider disconnecting the feed for the reversing lights on the 12S socket (if you have one.) If you don't have a towbar (or there's nothing apparently wrong with it) carry on as follows.
2) Disconnect both reversing lamp clusters, replace the fuse and try reverse. Does the fuse still blow? If not, then it's a fault on one of the clusters. Try reconnecting the clusters but taking the individual bulbs out and see what happens then.
3) If the fuse does still blow, replace it again and try disconnecting the large blue multi-plug behind the passenger side boot lining. If the fuse doesn't blow, then the fault is to the rear of the multiplug - most likely chafed wiring going from the car body into the boot lid.
4) If the fuse does blow, then the fault is forward of the multi-plug. Again, chafed wiring is probably the likely culprit, but it's going to be a pig to trace.

I'm assuming that this is the hatch (as per your avatar.) If it's the tourer, then the reversing lights are in the main clusters, and so the stuff about the boot lid and possibly the multiplug won't apply.
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Last edited by Horatio; 16th February 2007 at 08:20 AM.
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action , lights or heated , rear , reversing , window

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