Auto Transmission failure warning

texter · 01-17-2014, 05:08 AM

Driving around the CBD this afternoon (45deg) the transmission warning came on - advising to drive carefully to nearest service centre. The car only used 1st and 2nd gears around town with a very rough shift. It also was very slow to engage reverse. After I stopped and returned 10mins later the car started and all the problems resolved.

Should I be worried? Does it need to get looked at now that it works ok?

Is it the high temp we're experiencing?

Drawn05 · 01-17-2014, 05:44 AM

I think the 320i uses auto uses a version of the GM 6l45r found in the x25, x30i etc engined cars.

It is a piece of garbage. I think you will find that the heat exchanger failed to let off enough heat to allow the ATF operate properly and the trans has entered a failsafe.

ATF burns and like most oils will lose its ability to lubricate and allow the trans to shift properly.

The Gl45r uses Dexron IV so it should be a lot cheaper to service. All you would need is the filter unit, O ring and about ~7ISH Litres of DX4 and it should be fine.

01-17-2014, 05:08 AM	#1
texter Private 15 Rep 64 Posts Drives: G21 330i Join Date: Aug 2009 Location: Melbourne iTrader: (0)	Auto Transmission failure warning Driving around the CBD this afternoon (45deg) the transmission warning came on - advising to drive carefully to nearest service centre. The car only used 1st and 2nd gears around town with a very rough shift. It also was very slow to engage reverse. After I stopped and returned 10mins later the car started and all the problems resolved. Should I be worried? Does it need to get looked at now that it works ok? Is it the high temp we're experiencing?
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01-17-2014, 05:44 AM	#2
Drawn05 Captain 67 Rep 853 Posts Drives: Yes Join Date: Dec 2010 Location: Left iTrader: (0)	I think the 320i uses auto uses a version of the GM 6l45r found in the x25, x30i etc engined cars. It is a piece of garbage. I think you will find that the heat exchanger failed to let off enough heat to allow the ATF operate properly and the trans has entered a failsafe. ATF burns and like most oils will lose its ability to lubricate and allow the trans to shift properly. The Gl45r uses Dexron IV so it should be a lot cheaper to service. All you would need is the filter unit, O ring and about ~7ISH Litres of DX4 and it should be fine.
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