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      05-11-2022, 11:23 AM   #38
HighlandPete
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Drives: BMW F11 535i Touring
Join Date: Mar 2007
Location: Scotland, Highland Region

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Quote:
Originally Posted by salimshk View Post
The only thing I can think of, which a manager at BMW mentioned to me was the gearbox thermostat. I did not even know this existed but at that point I could not be bothered to chase the issue any longer. Any chance your cars that exhibited these symptoms were automatic?
Well.. a thread resurrection.

Ah, the AT thermostat... we did beat that one to death in other topics. I know it was included in many of the E9x/E6x discussions where engine thermostats were changed and no changes to ECT. Often the temperature would not climb to much more than 75C, a bit like failed EGR thermostats. Without reading all the thread again, not sure we covered all bases here.

If I remember correctly, I think on the E60 there is a hose that can be clamped to eliminate the AT thermostat. Can't recall without back reading, if there is a similar trouble shoot path on the E9x models.
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