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Hi everyone, I've been a long time lurker of this site and finally signed up. Thank you all so far for the great advice. I have a 2008 e60 M5 with just under 88k miles. Since I bought it, I've replaced the ABS, traction control, control arms, and clutch. The clutch has about 1500 miles on it, if that. Everything on the car is OEM.

For the last few months, my car will randomly go into neutral and display the yellow cog or red cog, at times even saying that restart may not be possible. At first I thought it was the clutch, which did need to be replaced, but the problem persists. I've noticed it's always when I'm in manual mode and typically M, and always on an upshift. The car will freak out, go to neutral, and usually go right back into drive like nothing happened. I've had to turn off the engine and restart it a couple of times.

The dealer has looked at it several times and says there are no error codes stored and that everything looks fine. They're pretty incompetent for the most part so I took it to a performance specialist in BMWs and they're saying the same things. After having read just about every thread on transmissions on here, my best guess is that the alternator is going. The HUD also randomly dims to the point of barely being visible, and the backup mirror position doesn't engage anymore when I reverse. Does anyone have anything to add to this or have an experience similar to this? Is there anything else I should have the garage look at while they're working on this issue (I want to make sure the next owner doesn't get hosed).

I'm going to sell the beast after I get this issue sorted out. It has an extended warranty that covers all major parts except the clutch (which I just replaced) and I will transfer this to the new owner. It has another 12000 miles/year left on it. Do you think an asking price of $32k is realistic? The mechanic (indie) said that the car's engine is in super shape and that the car, overall, is in fantastic condition. Perversely, I believe that I've fixed most of the issues with this car and the next owner will get to enjoy it for longer than I did, but we're starting a family and we need a more reliable car so I'm getting a super boring but cheap/reliable diesel Passat. Maybe now is the time for my Ducati? hiha

Thanks again for the help, everyone!
 

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If you get a red cog, you will have a error code stored, thats for certain.. Not much to go by without having the codes.. Could be a few things..
 
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