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July 9, 2019 Service bulletin

N52T / N55 with 8HP45: Delay in Engine Response

BMW technical service bulletin 121712 for 2011-2013 BMW X5, 2011-2013 BMW X3 and 2011 BMW 528I and others.

Bulletin number
121712
Component
Engine and engine cooling
Summary
N52T / N55 with 8HP45: Delay in Engine Response. A customer may complain of a delay in engine response after decelerating at low road speeds and then reaccelerating. This can occur when the transmission remains in a high gear due to a delay in the transmission downshifting. This situation can be more noticeable while driving on roads with slight turns or with an increasing gradient. Unfavorable EGS and DME software

Owners of these vehicles have filed 668 complaints in the engine category.

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