HELP..E90 Gearbox light on

eddiehk23 · 04-14-2009, 11:55 PM

Gearbox light<Yellow> of my 08 E90 320i was on suddenly.My car only run 7,000km. The problem disappear after I restart the car. I hv sent to back to BMW, the could find the light had on but no any reason can be found. So far, the light doesn't on. But I was scared that when the light will be on again. Coz It will be danger especially on the highway. BMW told me they require me to send the car back and reprogram the gearbox computer.
Does anyone got the same problem?
Pls adv

Bartman619 · 04-15-2009, 12:32 AM

Looks like limp mode on the transmission. To protect itself, it only shifts to lower gears. This happened to me in my e36..when I turned the car off and restarted it the fault cleared. It was fixed when the dealer reprogrammed the TCU(transmission control unit). The light can also be caused by other faults, low transmission fluid. Hope this helps.

eddiehk23 · 04-15-2009, 04:21 AM

Tks man!
BMW had checked the transimmion oil level, and it's normal. BMW is now asking me to send to car to reprogram it. I hope it works.
Actually, I just worried about it will be the problem of my gearbox computer.Afterall, it is very abnormal to happen in such new car.

eddiehk23 · 04-22-2009, 03:17 AM

Hey! BMW finally checked the problem!
It was the problem of crankshaft sensor. They will replace for me.
But anyone know what's crankshaft sensor?

matty231 · 04-22-2009, 03:27 AM

I'm no mechanic or expert but isn't the crankshaft in the actual engine housing?

You'd think it would be the actual gear fluid sensors. Oh well, I suppose the main thing is they found it!

04-14-2009, 11:55 PM	#1
eddiehk23 Registered 0 Rep 3 Posts Drives: E90 320i Join Date: Apr 2009 Location: Hong Kong iTrader: (0)	HELP..E90 Gearbox light on Gearbox light<Yellow> of my 08 E90 320i was on suddenly.My car only run 7,000km. The problem disappear after I restart the car. I hv sent to back to BMW, the could find the light had on but no any reason can be found. So far, the light doesn't on. But I was scared that when the light will be on again. Coz It will be danger especially on the highway. BMW told me they require me to send the car back and reprogram the gearbox computer. Does anyone got the same problem? Pls adv
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04-15-2009, 12:32 AM	#2
Bartman619 Captain 25 Rep 701 Posts Drives: Bimmer Join Date: Jun 2008 Location: SDCA iTrader: (2)	Looks like limp mode on the transmission. To protect itself, it only shifts to lower gears. This happened to me in my e36..when I turned the car off and restarted it the fault cleared. It was fixed when the dealer reprogrammed the TCU(transmission control unit). The light can also be caused by other faults, low transmission fluid. Hope this helps.
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04-15-2009, 04:21 AM	#3
eddiehk23 Registered 0 Rep 3 Posts Drives: E90 320i Join Date: Apr 2009 Location: Hong Kong iTrader: (0)	Tks man! BMW had checked the transimmion oil level, and it's normal. BMW is now asking me to send to car to reprogram it. I hope it works. Actually, I just worried about it will be the problem of my gearbox computer.Afterall, it is very abnormal to happen in such new car.
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04-22-2009, 03:17 AM	#4
eddiehk23 Registered 0 Rep 3 Posts Drives: E90 320i Join Date: Apr 2009 Location: Hong Kong iTrader: (0)	Hey! BMW finally checked the problem! It was the problem of crankshaft sensor. They will replace for me. But anyone know what's crankshaft sensor?
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04-22-2009, 03:27 AM	#5
matty231 Second Lieutenant 19 Rep 243 Posts Drives: '08 E90 335i M Join Date: May 2008 Location: Kiwi Land! iTrader: (0)	Crank sensor?! I'm no mechanic or expert but isn't the crankshaft in the actual engine housing? You'd think it would be the actual gear fluid sensors. Oh well, I suppose the main thing is they found it! __________________ 2008 BMW 335i M-Sport Black Saph w/ Dakato Black \| M-Sport \| Sunroof \| iDrive \| 6SP Steptronic \| Comfort Access \| Lights Package \| JDM Spec
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