Question about 2001 BMW 330

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Crazy BMW problem!! Please Help I have a 2002 330ci convertible with 96,000 miles. A couple days ago I made a right turn onto a freeway onramp and hit the gas (i was using steptronic ), suddenly there was a **** and my transmission light with an exclamation comes on along with battery, DCS, service engine soon, and a few other lights coming in and out. It went haywire and did not shift correctly. I parked and read the manual, and it said if the tranny light comes on, the car will go into emergency transmission mode(only shifts in 3rd and 4th gear) which was happening. I called the dealer this morning after I had to jump the car this morning. Service guy said to replace the battery 1st even though my batt. is only 6 months old. He said that a low charged battery may cause all these lights to come on including putting the car in the emergency transmission mode. I went to autozone and changed out the battery. My battery light went away but my tranny light is still on and the car is still in the emergency mode and my check engine light is still on. Ive read it could be the alternator, mas sensor, tranny thermostat, or a charging system problem. Autozone did a codescan and got 2 error codes: P0128- some type of Cooling system fault which was existing before this problem. P1892- they did not have any info on what this was. Any idea or suggestions as to whats causing this would be greatly appreciated, Thank you -Fred

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Unhook your car battery for about a half hour. hook it back up and see if the lights are off now. all the codes should reset, drive the car over to autozone and have them test the charging system to see that it is operating correctly. also if your radio is of the anti-theft variety make sure you know the code to activate it and how to enter it.

Posted on Oct 06, 2009

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Hi fred,

i have a 2001 bmw 330ci (manual) and THE EXACT SAME THING happened to me today... i practically floored it on a ramp (2nd gear soon after start-up) and my battery light turned on. after driving for a few minutes the battery light went off and all other lights went NUTS... on off.

i got to work fine, but the car wouldn't start at the end of the day; dead battery. i got a jump from a buddy and by the time i reached home (w/ warning lights going nuts) the battery was charged enough to start the car a few times.

i noticed that while driving (i.e.engaged gear), my stereo system would become lower quality (karmon bulshit) and the seat heater would not work! when at the lights (static) , they do work... strange.

initially i had thought it is either the battery or the alternator. after hearing your story i am starting to suspect its the alternator. output should be ~13V when engine is running, so that is what i'm going to check tomarrow.

i hope you have already resolved your problem, and if so, please advise :)

thanx

hanna

Posted on Apr 23, 2010

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