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M6 Transmission Error.

3K views 6 replies 4 participants last post by  ur20v 
#1 ·
Hey there,
I need some help:
Since a couple of days I have several times transmission errors....

It started during cold temperatures (-10 up to -15 Degrees celcius)
The fault code came up after 5 min driving (Yellow and Red Symbol) AND disapears after 20-25 minutes of (careful) driving.

Exchanged already the battery (according Dealer this was down (only 15% loading capacity)
After Battery exchange no problems for driving (day time, temp -3 Degrees celcius)
But driving home in the evening (again -10 degrees celcius) again TRANSMISION ERROR...
20 minutes driving in this way.... all solved again.... Had the car standing roughly 1 hour and drove agian.... NO PROBLEMS...
I am going creasy......


Does some one have the same problems??
Could this be due to these cold temperature conditions(car is standing outside in the cold)??
Car had a oil service 2 month ago (inclusive transmission OIL)
I did a search already and found sensor faulure, but as mine is changing form error to NO error, this looks strange to me.

I hope some could help me by giving some direction how to solve.... of if it is realy temperature related.....


Thanks already in advance for proper feedback..
 
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#2 ·
It is very difficult to guess the problem like this. I would strongly suggest you get the car scanned and get the detailed fault codes.

I think it might be your SMG relay or sensor. But only the fault codes can point you in the right direction.

What is the mileage on your car. I thought BMW believes that the SMG has a life time fluid that would last the life of the car. Are you sure they changed the SMG fluid.
 
#3 · (Edited)
Hello Hasan,<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com
Thanks for your reply.<o:p></o:p>

It seems that after 3 times oil change is done, the transmission fluid is changed as well. I have now 76.000 Kilometers down...<o:p></o:p>
<o:p></o:p>
Dealer did a download of all fault codes, and one of them was bad battery..... this was replaced, but probably not the item that generates the transmission error......<o:p></o:p>
<o:p></o:p>
Strangest think is that "Transmission Error" code disappears after 20 minutes driving....... when the car is warm and stays away during driving or when I restart again (as long as the car is warm no error code)......<o:p></o:p>
<o:p></o:p>
I will make new appointment with dealer, But just try to find out some experience here on the board (so that I have some more info, just in case dealer try to.......rip me off.....)<o:p></o:p>

 
#4 · (Edited)
A set of conditions need to be met in order for the transmission fault code to be given. The dealer should have scanned for the transmission fault code, I am surprised to hear that there was only a 'bad battery'-you likely would have seen this as a high battery discharge message. For some reason the dealer always wants to replace the battery on these cars when it seems like the transmission has a problem. I had a similar problem occur once but it never came back, and in that case I actually saw the 'battery discharge message' on the same day. I have been charging my battery every couple of weeks to make sure it 'full' and I have never seen the transmission error again (though I did see the discharge message a couple of times afterwards). The fact that you are seeing a recurring transmission error leads me to believe you may really have a transmission problem (go figure!). I hope it is under some kind of warranty, I would send to dealer or another reputable shop ASAP. You should really try to track down the code that is triggering the transmission faults.

Keep us posted!
 
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