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      04-05-2015, 01:51 PM   #1
funkle
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Reset/ clear warnings after power interruption?

I just got my car back from the stereo shop, and just about all the warning light are on: ABS, brake, tire pressure, EML, service engine soon and DSC. Window auto-up/down not working, and I'm pretty sure DSC & ABS functions are deactivated as well. There are no blown fuses I can see. I'm assuming this is due to a battery power interrupt. Is there some way to reset? I haven't been able to find anything in my searches.

Last edited by funkle; 04-05-2015 at 02:15 PM..
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      04-05-2015, 06:17 PM   #2
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I THINK there is something about turning the key a couple times, but not entirely sure.


This will help with the windows though. http://www.zpost.com/forums/showthread.php?t=62834
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      04-05-2015, 06:50 PM   #3
inTgr8r
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It shouldn't do that for a power interrupt.
I had power off for more than a week with ECU removed on my 06 M roady with no such issue.
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      04-06-2015, 12:46 PM   #4
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Start with checking in the health of your battery. If your battery is weak some of the lights (Google BMW Z4 trifecta) could be from that. If certain connections were disconnected prior to battery being disconnected some lights illuminated could be from that...

If the battery is weak you will need to replace as BMW a electronics are susceptible to low voltage....

Once you've done that you will likely need to get your fault light/error codes reset to see what's left/still illuminated. Then you can see if there is an outstanding issue still.

There is a small wire (red) that goes to a connection point in your battery well (depends if you have battery in well or not) thats part of the SRS system. If the wire is broken or the inline connection is dirty it will cause that particular light to illuminate...

Handheld code reader won't read BMW error codes (reads engine codes only) so unless you have INPA software you will need to go go BMW/independent specialist to clear the codes.
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