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E46 M3 (2001-2006)

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  #1  
Old 04-25-2017, 03:39 PM
johnclarence johnclarence is offline
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Mein Auto: 2005 330ci, 2006 530xi
bad senser?

Hi, my 05 m3 rag-top has been having some issues lately that are driving me nuts!! I can use all the input I can get thanks! About a month ago the airbag light came on then went off, then the turn signals would either not work or when they did they would not go of. It seemed to me that alot of electrical things were not functioning right, so I had battery checked and it was ok but alternator was not doing it's job. I had it replaced and all was good! but then about 3 days ago I took someone on a test drive on a special road near where I live, road is very twisty and never any traffic, so i hit some high speeds but everything was ok, but when I was done I noticed the air bag light came on for just a second or two, I drove home easy did not break any speed limits and everything seem good with the car. then today started it up airbag light stayed on as well as seat-belt light, also turn signals would not work or they would not go off. I called a friend who said it could be the sensor in the steering wheel. I drove it about 30 miles and things started to get better air bag light stayed off turn signals started to work etc. Parked car for about a hour then headed home everything was working great! But when I got home dashboard light would not go off I tried everything then left it for about 20 minutes came back finally they went off but now the buzzer that sounds when you get out of car but leave your keys in the ignition, would not go off that took me a while finally got it off, please can any body help???
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Old 04-26-2017, 06:06 AM
marcozandrini marcozandrini is offline
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Google "BMW E46 hidden obc functions." Test #9 shows the voltage as seen by the computer. Is the new alternator "new" or rebuilt? If it's a rebuilt alternator, where did you buy it. What company did the rebuild? Is it a Bosch (yeah) or a Valeo (no yeah) alternator?
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Old 04-26-2017, 08:43 AM
johnclarence johnclarence is offline
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Mein Auto: 2005 330ci, 2006 530xi
hi thanks, I got a Bosch from ECU tuning I will check out Google thanks again, John
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