2016 M235i 6-spd
Jone or Perry or both,Background: One day in December 2008 after warming up my car I pulled out my driveway and immediately my cars dashboard gave me SES, AIRBAG, BRAKE, CONVERTIBLE TOP MAL, ABS, and a whole Christmas tree of lights i dont remember all of them. But anyways turned off my car to see if that would solve the problem and when trying to start it up again, it just cranked but wouldnt start. So then i got the battery change by Tischer BMW in Feb 2009, everything seemed to be going well after that, i drove it normally, no problems. Then in Dec 2009 same sh*t happened again where my car gave me those sh*t dashboard lights. I then turned off the car and after an hour, it started back it fine. I thought everything was solved but then after trying to drive it 100 feet, the lights come back.
Currently: I charged the battery at Autozone, they said it was a good battery when they tested it. Then i tested it myself and it gives me a reading of 12.33 volts. When i start the car and turn on the Xenon headlights and heater to 91 degrees full blast, the voltage reads 13.8 to 13.86 volts. So is my alternator bad... what else could it be if the problem is not the alternator????????
Mileage? Year? Sorry if I missed that.
What other elect. work might have been done incidental to original problems?
I like the cleaning and replacing brushs, regulator, but haven't done this myself. Had alt out...should've stepped up my diying! Anyone with link or 'crib' notes on this...Mr. Juan? Alt in, think you said for both brushes and reg, right?
Anyway, OP...Don't forget the basics too that many skim over too quickly in diagnosing elect. issues...
Battery cables tight? With replacement bats. sometimes terminals are too small and if you or mech only tighten nuts on connector, cable might still be loose...generally, I think that'd show up pretty soon and as intermittant odd gremlin sorts of things.
Parasitic drains from Aftermarket stuff that you don't think have anything to do with other elec. issues...really do. I've read often of diying this or that...or mech that gets things to work, but is pulling power incorrectly...often so it's drawing power continuously behind the scenes.
Shorts somewhere...loose fuses...get to know your ground locations...might be loose somewhere.
Ah, my favorite...
totally 'unrelated' failure/repair of another system--cooling, lubrication, CCV, PS, elbow...causing fluids to get into connectors and foul up signals to car.
OP, sorry for this, but is your car driving? Just lights and no other symptoms in engine or switches, etc?
Have you scanned for codes for free at Autozone? I haven't ever, but heard that's a service they do...bring codes back.
But first, look into basic things and report on other repairs.
I like a puzzle and would be glad to play! (Away all day though!)
HTH...sorry if you're already past all these suggestions!