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post #1 of 4 (permalink) Old 07-09-06, 06:32 PM Thread Starter
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idle current too high

My battery has been going flat very quickly lately. I checked the idle current with all accessories off and it is at 800mA which is way too high. It might be the after market head unit not switching off completely so I will check that soon, but does anyone have any other possible reasons of why it is so high?

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post #2 of 4 (permalink) Old 07-09-06, 06:40 PM
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Re: idle current too high

Quote:
Originally Posted by crazy_german
My battery has been going flat very quickly lately. I checked the idle current with all accessories off and it is at 800mA which is way too high. It might be the after market head unit not switching off completely so I will check that soon, but does anyone have any other possible reasons of why it is so high?

Cheers
Place a current measuring device in line with the battery and then pull fuses untill you find it.. DONOT start the car untill you remove the meter :)
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post #3 of 4 (permalink) Old 07-10-06, 07:06 PM
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Re: idle current too high

Common and very annoying contrbutor to this - check the boot light!! You normally can't determine if it stays on or not. Get the kid (or girlfriend) and temporarily lock them in the boot to see if the light stays on. Could be the boot light switch gone on the fritz. I've seen batteries replaced more than one in the same car because of this. A 12 volt 6 watt globe will draw about 500 mA (a 10 watt is in fact about 800). Allow a few more mA for alarm systems etc. and you're up round you figure of 800mA. Go and check.
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post #4 of 4 (permalink) Old 07-13-06, 06:49 PM Thread Starter
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Re: idle current too high

Cheers Fordboy that sounds like it could be the problem. I'll check it and get back to you.
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