Junior Member, warming up (<31 posts)
Join Date: Feb 2019
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Looking for an M6 convertible
Newbee here, sorry if I am being obtuse.... I am looking at a 2007 M6 with 38,000 miles on the clock. I am a aerospace engineer, a licensed aircraft mechanic/inspector and have always performed my own maintenance on all of my vehicles, including engine rebuilds, etc. Just a little background so you don't think I am a complete rube. Given all of that, I know enough about these cars to know I don;t know enough about these cars to make an informed decision. So, I sent the car to a local BMW specialty shop and they told me it did a couple of weird things - the differential appeared to bind on hard turns and the clutch disengaged and allowed the car to roll backwards when driving up a small incline into their shop; the latter happened twice or three times, which they said means the clutch is just about shot. They also found these codes:
TRANSMISSION MANAGEMENT (EGS/SMG)
520A STEERING ANGLE SIGNAL FAULTY
4FA0 CLUTCH (ACTIVATION, POSITION DEVIATION)
According to this shop, the 4FA0 code has been reset 5 or 6 times.
So, I looked at a couple of other M6's 2008, 2009, and they seemed to drive about the same to me. Can anyone on here,m with the small amount of info I have given you, tell me if the diagnosis is correct? The 2009 had the clutch position sensor changed on it - is it possible that is the same thing that is wrong with the 2007? That of course does not explain the clutch disengaging issue...
I have no reason NOT to trust the shop, other than that I have never dealt with them before and they are not local so no one else that I know has any experience with them either.
What I am getting from reading through this forum is that the SMG isn't as scary as it it sounds, unless something goes really bad internally; clutches, pumps, ensors, wiring harnesses are common issues not the end of the world.
Oh, the other thing he said was an issue with this car is that the suspension bushings on the LH side of the car were loose/worn out. Seems like way too little time on this car for suspension parts to be shot - and why only on one side of the car?
Any wisdom you guys may offer would be greatly appreciated.