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post #1 of 2 (permalink) Old 28th January 2008 Thread Starter
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Renault Laguna 2 - Battery Drain

I have a 54 1.9 DCi Tourer which over the past month has proved unreliable. The problem is intermittent as I have found that the battery is dead for no apparent reason.

I have had both the battery replaced as well as the alternator by a local garage - but the intermittent problem still persists.

e.g. I can drive for 85 miles, park up and having checked that everything is off, I lock the car, and return in approx. 1.5 hours and the battery hasn't enough power to open the central locking. Access is via the emergency front passenger door key access. Once jump started the car will start first time for days - until for no apparent reason the problem returns.

Any sensible ideas / suggestions would be gratefully received.
Many thanks in anticipation.
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Renault Laguna 2 - Battery Drain Electronics pete328 1 1821 28th January 2008 09:26 PM
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post #2 of 2 (permalink) Old 29th January 2008
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firstly i would put a voltmeter across the battery when the car is off to see if there is a drain on it and how much of one. It may be wise to have the battery tested, it may be faulty you never know. if its ok and their is a drain on it with everything off, then its a process of elimination to find what circuit is causing the drain. i would do this by removing fuses one at a time to see which one stops the drain on the voltmeter ie battery. that will narrow the fault down to a particular circuit.
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battery , drain , laguna , renault

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