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Old 12-04-2012, 10:08 AM
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Yorgi Yorgi is offline
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Location: Toronto
 
Join Date: Mar 2005
Posts: 3,381
Mein Auto: '04 M3 / '06 650i Cab
That sounds promising. I am now almost certain you have a power issue.

It is most likely a bad battery. When multiple errors occur at once it's a very good indicator of a weak battery or an alternator issue. The alternator is probably OK, it seems like it charges the weak battery after you've driven the car for a while clearing the power related issues. When you let the car rest the weak battery drains and problems return.

I would have the battery tested for starters. If it's OK then have the alternator checked.

If both are OK I would still change the battery to be safe - it's cheap insurance.

If a new battery does not help have the IVM checked. This is a module that controls power distribution to the car and will cause errors like you are having but it is the more expensive and rare to fail part compared to the battery and alternator.
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'04 M3 - track
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Last edited by Yorgi; 12-04-2012 at 10:09 AM.
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