Originally Posted by DimSum
Did you need to change your thermostat too?
Yes, but I did it 6 months before the pump failed. The problem is the pump costs $400 just for the part. It's hard justify replacement at 100K, or whatever mileage, since there is no information from BMW as to the mean time between failure of the pump. As I said, lousy execution. Since it is not belt driven, you'd expect it not to fail for the life of the car.