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Old 11-10-2012, 07:39 AM
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QSilver7 QSilver7 is offline
Officially Welcomed to the 'Fest
Location: Northeast Indiana
Join Date: Aug 2008
Posts: 9,158
Mein Auto: 1997 740iL / 2006 X5 4.4
Have you checked your battery voltage? I vehicle battery that is starting to fail...or has very low voltage...can cause erratic electrical glitches as you describe. Think of it like being punched in the head...everything becomes discombobulated due to the electrical impulses in your brain being scrambled.

If you've UNLOCKED your can run TEST 9 to see what your battery voltage is...or if you have a can get an accurate reading. When the battery voltage dips to approx 11.89 volts...the battery is at approx 0% state of charge. This doesn't meant that the battery is totally dead...there may be some residual reserve capacity or cranking amps that may be able to start the vehicle...but if the battery is slightly may not have enough "juice" to keep all the electronics going...again, think of a boxer that's been punched hard in the head.

If UNLOCKING your OBC is foreign to you...see the instructions below on how to UNLOCK the HIGH instrument cluster. There's also a link to my CarDomain page that has a description of all 21 OBC TESTs that will help explain what your are seeing once the OBC is unlocked:

(explanation of all 21 OBC TESTs:

Q {BMW CCA Member #191509}
2006 E53 X5 4.4i (Sterling Gray) 12/05 mfg date <<~>> 97 740iL (Arctic Silver) 3/97 mfg date
99 540iT (Orient Blue) <<~>> 95 525IT (Alpine White)
91 735iL (Schwarz Black) <<~>> 85 325e (Bronzit)
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