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SIB 12 01 23: Engine service information

Engine service information on BMW G01/G02/G20/G21 and other models (2018–2023); BMW explains the cause and the approved repair.

BMW service bulletin · NHTSA ID 10236218 · Apr 2023 · also written SI B12 01 23, B120123

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.

In hot ambient conditions, if the engine was running for a prolonged time while the vehicle is stationary, a jolt may be experienced while lightly accelerating.

NHTSA's summary of this communication (excerpt)

Official document on NHTSA (PDF) →

Details

Bulletin numberSIB 12 01 23
Also written: SI B12 01 23, B120123, 12 01 23, SIB-12-01-23, SI B120123
NHTSA ID10236218
Document IDs filedSIB120123
TypeService bulletin
Date
Models330e, 330i, M340i, M4, X3, X4, Z4
Model years2018–2023
ChassisG01, G02, G20, G21, G29, G82, G83, F30, F34, F97, F98
EnginesB46/B48, B47, B58, S58
Component (NHTSA)Engine And Engine Cooling

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.

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Before you pay: check your VIN for recalls

Some failures are covered by a safety recall or a warranty extension. Our free recall check lists NHTSA recalls for your car's model and year.

Check recalls by VIN →

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.

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