BMW's automatic transmission goes into emergency mode when it warms up
In my car with automatic transmission, after warming up, the third gear does not enter and the transmission goes into emergency mode. On a cold engine/transmission it runs normally. What could this mean? The problem affected a BMW 330ci E46, but it also happens in other models with automatic transmi
BMW driver question
In my car with automatic transmission, after warming up, the third gear does not enter and the transmission goes into emergency mode. On a cold engine/transmission it runs normally. What could this mean?
The problem affected a BMW 330ci E46, but it also happens in other models with automatic transmission.
Response from BM Cars service
This behavior of the gearbox suggests that the oil in the gearbox is excessively worn and its viscosity is significantly reduced after warming up. If this is the case, an oil change complete with filter and sump seal may solve the problem.
For a correct diagnosis, it is necessary to perform a full diagnosis of the transmission on the computer and check the quantity and quality of the oil.
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