Water Pump Problems of BMW 330

Very loud noise (fan noise) coming from the engine compartment when the car was started from a cold start. Car is drive-able but seemed to lose some power. The noise may or may not come back during the next start. A few simple searches on google and from various BMW forums indicated that it's a very common problem for the 2006 BMW 330i e90 sedans and problem seem to be the faulty water pump and faulty thermostat. As there are no warning light nor any tell signs, the car could go from full performance on the freeway to limp mode (forceful slow-down mode) in the matter of a few seconds due to overheating of the water pump, and it could be very dangerous. The hidden error codes may be discovered with a vehicle specific scanning tool but there is no warning light or error light whatsoever to warn the owner unless the car is brought in to the shop and being scanned with the proper scanning tool. But if there is no warning/error light, no one would have thought to bring the car in for scanning.

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The contact owns a 2006 BMW 330i. Two minutes after the vehicle was started, the contact noticed an abnormal odor and smoke under the hood. Also, the inside of the vehicle became extremely warm. The vehicle was not taken to be diagnosed by a dealer. The vehicle was taken to an independent mechanic where it was diagnosed that the water pump needed to be replaced. The vehicle was repaired. The vehicle was included in NHTSA campaign number: 17v676000 (engine and engine cooling). The manufacturer was not contacted. The approximate failure mileage was 90,000.