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What causes a BMW X3 to suddenly stall and fail to restart?

1 Answers

MayaFitz

07/28/25 9:55pm

Reasons and solutions for a BMW X3 suddenly stalling and failing to restart are as follows: Use of inferior engine oil: During cold starts, factors such as cylinder pressure, engine speed, and temperature make it difficult for inferior engine oil to ignite, resulting in failure to start. It is recommended to use the manufacturer-recommended engine oil or a higher-quality full synthetic oil. Battery depletion: If the voltage during startup is below the minimum required for the engine control unit to operate, the engine computer will not function, preventing startup. In this case, the battery should be recharged or replaced. Starter relay sticking: During startup, if there is only a slight "click" sound and no further response, this is caused by a sticking starter relay. Pressing the tail end of the solenoid to force it forward can reconnect the starter circuit, allowing the engine to start.

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