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Old 04-29-2013, 10:05 AM
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Qsilver7 Qsilver7 is offline
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Quote:
Originally Posted by Elvis 3.0 View Post
...{QSilver 7 will be posting soon with the battery terminal diagram hopefully with proper name of said safety wire}...
...thank you for giving my morning laugh.

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Quote:
Originally Posted by Area51
...I checked for codes with an OBD scanner and found nothing.

Any help understanding why the 4x4 light is on is greatly appreciated.
Many thanks.
BTW: the OBD II (onBoard Diagnostic) code readers (for when the Service Engine Soon/Check Engine light illuminates) are for electronic emissions testing...so a dead or low battery isn't going to leave any codes in this instance since the battery is not related to electronic emissions.


Ditto what the others stated above regarding the battery. More than likely, the 4x4 warning is due to the battery's voltage being low. You wrote that you still had the battery on a 2amp charger...that's good because a long low amp charge is the best for recharging.

I'm also on board with the possibility that this could be the original battery if you don't have any service records or known memory of it every being replaced. The original BMW batteries (from Germany) can last from 4-10 years...which could mean that you're still on the original...which means this is a "sign" that it's time to replace it or be prepared to be temporarily stranded somewhere if you don't have jumper cables (those battery packs usually don't have enough juice to jump start a BMW battery whose voltage has dropped below 11.5 volts.

If you've unlocked your OBC (or know how to do it)...you can run TEST 9 (with ignition in position 1) and get the battery's voltage. At 11.8 volts...the battery is at 0% state of charge...which means it may or may not have enough reserve capicity to start the car...but small electrical stuff like the interior lights, instrument cluster, etc may be able to still illuminate.

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Last edited by Qsilver7; 04-29-2013 at 10:11 AM.
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