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NHTSA 10148256: N52T / N55 with 8HP45
N52T / N55 with 8HP45 on N55 engines (2007–2015); BMW released a software update.
BMW service bulletin · NHTSA ID 10148256 · Apr 2014
What it covers
A service bulletin tells BMW technicians how to diagnose or fix a known issue. It is not a recall: a repair under a bulletin is normally paid by the owner unless the car is still under warranty or a warranty extension applies.
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.
Details
| Bulletin number | NHTSA 10148256 |
|---|---|
| NHTSA ID | 10148256 |
| Document IDs filed | 121712 |
| Type | Service bulletin |
| Date | |
| Models | 528i, 535i, 535I Gran Turismo, 550i, 550I Gran Turismo, ActiveHybrid 5, X3, X5, X5 M, X6, X6 M |
| Model years | 2007–2015 |
| Chassis | E60, E70, E71, E72, F07, F10, F25 |
| Engines | N55 |
| Component (NHTSA) | Engine Power Train |
Model, year and engine coverage comes from NHTSA's records. Not every car in this range is affected; the official document lists the exact production dates and conditions.
More for these cars
E70 repair costs F10 repair costs F25 repair costs All N55 bulletins
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Source: NHTSA Manufacturer Communications (public data). BimmerBench is not affiliated with BMW or NHTSA. The title and description above are our own plain-English summary; the full bulletin is BMW's document, linked above.