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Old 13th February 2012, 10:55   #1
ritchy-69
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Angry M6 Transmission Error.

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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Old 13th February 2012, 13:44   #2
Hasan Shaikh
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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.
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Old 13th February 2012, 13:53   #3
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Hello Hasan,

Thanks for your reply.
It seems that after 3 times oil change is done, the transmission fluid is changed as well. I have now 76.000 Kilometers down...

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......

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)......

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.....)


Last edited by ritchy-69; 13th February 2012 at 13:58.
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Old 13th February 2012, 18:52   #4
06M6BMW
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Quote:
Originally Posted by ritchy-69 View Post
Hello Hasan,

Thanks for your reply.
It seems that after 3 times oil change is done, the transmission fluid is changed as well. I have now 76.000 Kilometers down...

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......

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)......

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.....)

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!

Last edited by 06M6BMW; 13th February 2012 at 18:53.
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Old 19th February 2012, 12:23   #5
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Now temperatures are going up(+8 degrees celcius), problem is still valid......
I have made an a appointment at dealer for coming Thursday, they will do a dynostic check....
fingers cross....I keep you informed
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Old 27th February 2012, 10:26   #6
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Based on dyagnosis it seems that both SMG Clutch Sensor and SMG pressure sensor are broken???
Now I am waiting for approval from external warrenty company to fix the problem under their warrenty(total cost estimated 1100 Euro....)
Fingers cross...
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Old 27th February 2012, 11:17   #7
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Get them to check the alternator while the cars in their care, batteries and alternators have a habit of going together. Low voltage has a habit of making all sorts of codes, errors messages and warnings flash up not helped with cold weather!

Jay
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