The water pump pulley "exploded", causing the accessory belt to fall off which drives the alternator. The pulley "shrapnel" was thrown into the cooling system and damaging the hoses causing immediate loss of coolant. The loss of electrical power due to the alternator being inoperable and the loss of cooling could have caused the vehicle to malfunction in a dangerous manner. Fortunately, the vehicle displayed an error message and was towed to the dealer without further incident.
2021 BMW X7 engine complaints
Page 2 of 2: complaints 11 to 13 of 13, newest first, as owners wrote them.
2 Issues: 1) The water/coolant pump leaks and fails, leading to overheating. BMW says the following Service Bulletin does not apply: SIB 11 05 21 SERVICE ACTION: REPLACE THE MECHANICAL COOLANT PUMP I'm not really sure why or how it doesn't apply but it should. 2) The front passenger seatbelt has failed, in that it does not retract into its housing.
I was driving a car with family and all of a sudden we all started smelling a burning smell but we thought it must be from outside. However, in just few seconds the vents started throwing vapors so I stopped the car hoping it may stop if some minor damage. However, the hood started throwing oranges color fumes and by the time we all left the vehicle the entire front hood/engine area started burning. There were no indications of any faults in the car. This was the most shocking incident we had to face with my family where there were two kids of 4 and 9 along with my wife and her parents who are senior citizens.
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