Electrical Gremlins (I hope!)
Fun bunch of issues going on with my '06 4.4i, I tried search function but can't seem to find how these might be related...
Intermittent issues: "Check Brake Light"/"Check Rear Lights" - hard stop fixes those _every_ time, but still comes back maybe once in 3 or 4 trips, maybe turns on during the same trip 1/2 mile down the road... have pulled the housings and bulbs (always the right rear running brake light), and there's no issues that I can see (maybe a picture next time around will help? :dunno: "CD Error" Reading from the 6-disc changer - only way I've found to fix is turn off car, eject magazine, re-seat magazine, start car - and that's worked all but once - happens maybe once a week Frequent Issue: "Pass Airbag Off" Illuminated w/airbag warning light on dash - happens 9/10 times that I start the car, and turns off maybe 1 of those 9 times within 3 or 4 minutes of driving. Happens regardless of a passenger being in the passenger seat. Electrical Gremlins, or am I in for some sticker shock when I get it checked out in a couple days? Hoping it's something simple like battery on its way out or somesuch... E |
Failing battery?
I read a post a while ago that noted how a weak battery can cause intermittent electrical gremlins. |
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Totally possible. Haven't checked the battery, but if it's original it's 4 years and 8 months old, and it's getting cold out... Wondering if I should just spring for a replacement and get it over with (DIY of course!) Will at least check it, if it's a BMW OEM and the product date is before mid-'08 I'll probably end up replacing it and hope that fixes... E |
Check the voltage with the car off. Can be done easily with a multimeter from under the hood at the + & ground posts. If the voltage is seemingly higher than 12 volts, even 12.1, likely its a failing battery. It should typically never exceed 12v when new. If it's exceeding 12v now, it likely means that the decreasing electrolyte content is creating a more acidic environment and when running, will actually create a higher than normal voltage system potentially playing havoc with some components. This is a theory and of course, most people replace the battery before you can ever really spend time proving it. But the science is there....
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Sorry. JCL is correct. It's 12.65 or 12.7 max at 100% charge.
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