2006 BMW 330i Q&A
2006 BMW 330i Question: Why is my car overheating after driving on the interstate for an hour?
After driving on the interstate for an hour the overheating signal comes on and the car dies. The first time it happened I had it towed to a shop and they looked at it the next morning and found nothing wrong. The second time, again after an hour on the interstate, I left the car parked in a lot and returned the next day and it ran fine without showing the overheating alert. - annilu
check your cooling fan to see if comes on while its hot then I would change the t stat - goodguy
Have a specialty shop equipped with a GT1 check your BMW DME...there is an issue with its cooling system control - your.mechanic
The auxiliary fan and electric water pump are common failure points on this BMW. As previously stated, a shop with a BMW specific scanner should be able to confirm. - EA Motors
They have an electric engine water pump - these are prone to failure. I've just had mine replaced after same symptoms - JPS330