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SIB 64 04 20: Air conditioning noise

Air conditioning noise on BMW F39/F48 models (2016–2021); BMW explains the cause and the approved repair.

BMW service bulletin · NHTSA ID 10182920 · Oct 2020 · also written SI B64 04 20, B640420

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.

Prior to turning off the A/C, the system was functional and cooling properly. A/C compressor, or The power supply to the A/C compressor is too low.

NHTSA's summary of this communication (excerpt)

Official document on NHTSA (PDF) →

Details

Bulletin numberSIB 64 04 20
Also written: SI B64 04 20, B640420, 64 04 20, SIB-64-04-20, SI B640420
NHTSA ID10182621, 10182920 (revisions)
Document IDs filedB640420
TypeService bulletin
Date
ModelsX1, X1 SAV, X2
Model years2016–2021
ChassisF39, F48
EnginesB46/B48
Component (NHTSA)Equipment
Equipment Adaptive/Mobility
Equipment › Appliance › Air Conditioner

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

All B46/B48 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.

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