307sw 2004 battery draining?

:Hi, : :> like a headlight, heated rear window, electric window motor, air con fans :> running. :> Its not going to anything like radio memory causing it. :I agree. All of these are visible or audible (fans, lights...) excepted one :: remove the bulb(s) used for the trunk lighting. It may be a cause, and it :was a common fault with some people : they go fishing, leave the boot :opened, and in the evening, when they try to get back home, no power. : :HTH,

Either a fan or headlight remaining on would be easily detectable but a trunk light would not be so evident. On the 307 the rear seats fold down so it would be easy to check whether a trunk lamp was permanently lit. Even if it were a trunk lamp it would take at least a few days to drain the battery, particularly where the vehicle is being driven periodically.

I had a sedan once and a small panelbeating job had to be performed which involved adjustment of a trunk support strut. The repairer used an oxy torch to soften the strut to bend it before repainting the strut. He checked his adjustment by shutting the trunk immediately after the heat treatment and when he opened the lid the lamp was on as expected. But he failed to notice that the retained heat in the strut had melted the nylon plunger on the trunk lamp switch. When he closed the trunk lid again the plunger could no longer open the switch contact and the lamp remained on permanently without anyone being aware of this fact. It took about 8 days for the battery to go flat and I thought it was just the battery getting a bit old. I recharged the battery to get it started but again it was flat within a fortnight. Only then did I start some checking by measuring the standing current drain on the battery. It was over

500mA (6 Watts), which was abnormal, so I did some checking for lighted lamps. When I opened the trunk and felt the bulb immediately it appeared to be excessively hot for only being lit for a few seconds so I checked the switch and saw that the plunger was completely melted away.
Reply to
Ross Herbert
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Hi Lenny. This is top posting. Now scroll down to the bottom.

And this is bottom posting. Newsgroup etiquette is that you always bottom post so that the story flows and all postings finish up in sequence.

Sorry to hear about your unnecessary expense on a battery. I really think you need to go to an autoelectrics specialist. If you are anywhere near north Surrey or south Middlesex, I can recommend Roy Autoelectrics in Hetherington Road,Charlton Village. Otherwise I think you need to use your Yellow Pages and find one. Good luck.

Reply to
Keith W

Or the one in woking which are very helpfull,found then better than that lot over in Charlton Village, which could not find fault with my alternator.took it to the one in woking sprayed it inside and it lasted a few more months,got new one after that cheaper than the mob in charlton quoted me over =A3200, when i got one for =A395 with 3 year wannerity on it .

Reply to
Chris

The Heater Plug relay(attached to the outside of the under bonnet fuse box, just behind the front bulkhead) had burnt out. Replaced this and the car stopped loosing it's battery power over night, the warning light went off and the power came back again.

Reply to
lenny

:The Heater Plug relay(attached to the outside of the under bonnet fuse box, :just behind the front bulkhead) had burnt out. Replaced this and the car :stopped loosing it's battery power over night, the warning light went off :and the power came back again. : : Did you find the cause of the problem by your own endeavours or did the garage find it?

Reply to
Ross Herbert

Reply to
lenny

:The garage certainly didn't find anything. A friend recommended a mobile :auto electrician/mechanic who found it in 10 minutes. :

I thought as much. Going on your description of the fault finding ability of the garage "mechanic" (?) I would have been extremely surprised if they had located the fault themselves.

Reply to
Ross Herbert

I bet you are very happy now that the fault has been found.and also put right,it is always the little things you never think of that give you the problems.(like females some times hahaah)

Reply to
Chris

Not yet, If past experience is anything to go by. Lets give it a week and see what error light appears next because you can nearly be sure one will.

The car runs very nice when it is working properly though.

Reply to
lenny

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