Transmission Light On My 325i - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 04-05-2005, 12:03 AM
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I have a '93 325i automatic with sport shifting and every once in a while my transmission light comes on and makes my car start off in 3rd gear. If I turn the car off and then back on a few times it will go off and run just like normal. What the hell is going on? ghead\
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#2 (permalink) Old 04-05-2005, 12:09 AM
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Quote:
Originally posted by 325i Drifter@Apr 5 2005, 12:03 AM
I have a '93 325i automatic with sport shifting and every once in a while my transmission light comes on and makes my car start off in 3rd gear. If I turn the car off and then back on a few times it will go off and run just like normal. What the hell is going on? ghead
[snapback]325790[/snapback]
your car is a piece of shit bro, no Jj, you just need to take it in to a good BMW mechanic and let him just look around it might just be your computer module..i dont kno just play with it...keep it between the ditches peace
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#3 (permalink) Old 04-05-2005, 07:21 PM
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Quote:
Originally posted by 325i Drifter@Apr 5 2005, 01:03 AM
I have a '93 325i automatic with sport shifting and every once in a while my transmission light comes on and makes my car start off in 3rd gear. If I turn the car off and then back on a few times it will go off and run just like normal. What the hell is going on? ghead
[snapback]325790[/snapback]

You have a problem with the transmission control module or the transmission itself. Need to find someone to diagnose the problem.

1995 325I, window tint, K&N, debaffled airbox, BMW #104 wheels, Nighthawk low beams, smoked side markers, smoked corners, smoked taillights, M3 stlye heated mirrors, various interior bits, Bosal cat-back.
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#4 (permalink) Old 04-06-2005, 09:12 AM
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Quote:
Originally posted by tomctx+Apr 5 2005, 07:21 PM--><div class='quotetop'>QUOTE(tomctx @ Apr 5 2005, 07:21 PM)</div><div class='quotemain'><!--QuoteBegin-325i Drifter@Apr 5 2005, 01:03 AM
I have a '93 325i automatic with sport shifting and every once in a while my transmission light comes on and makes my car start off in 3rd gear. If I turn the car off and then back on a few times it will go off and run just like normal. What the hell is going on?* * ghead
[snapback]325790[/snapback]

You have a problem with the transmission control module or the transmission itself. Need to find someone to diagnose the problem.
[snapback]326260[/snapback]
[/b][/quote]

The tranny has speed sensors that normally fail due to wear and dirt that gets on them, so the light comes on because the computer cant read speed, turning the car off and on just resets the system, like on windows, ( YEs i know it may be stupid, but this is standart procedure on new cars, when electronics freeze, restart them). Anyway, the sensor goes bad, computer doesnt know what happens, and so it goes into failsafe mode, stays in 3rd gear.
This is very common on e34, but on their case, the dash cam display failsafe. transmission problem. On e36, well there is no such wonder, just a dum light.

Of course it can also be module itself or something inside the tranny. best bet is to go to dealer, since you need a modic to pull codes from tranny. Aftermarket code readers only read engine codes. Then see if its a cheapo sensor, or something else, but most of the time, its a small stupid sensor..


let us know

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#5 (permalink) Old 04-08-2005, 03:49 AM
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I experienced the same exact problem with my 93 325i. Brought it to Jiffy Lube, had the tranny fluid change and the problem went away. The guy at Jiffy told me that my tranny fluid was low and it was burned.
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