[dyansamuel]

I got a yellow warning signal on the dash as well as on the iDrive screen saying the temperature is high, avoid starts and stops or driving at walking speed, but can still drive. It happened after 10-15 mins in the traffic jam.

This signal has come up overtime the car crawls slowly in traffic. I have changed the gearbox fluid but it didn't seem to help. Anyone got any clues on this?

Thanks

Updated 12-24

Today I took my car in a workshop and had the DTC control unit and the clutch plates re-calibrated.

After the re-cal, overheating is completely gone. The clutch and the gearbox oil maintain at normal temperature even after a long time of hard driving.

The problem is, after a considerable time of use, the clutch plates are no longer at the right positions so they keep grinding each other excessively. Changing the gb oil would not change the spacing of the plates. The re-cal is definitely necessary to put the plates back into right positions.