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SIB 64 04 21: Air conditioning service information

Air conditioning service information on BMW G05 models (2019–2021); BMW explains the cause and the approved repair.

BMW service bulletin · NHTSA ID 10200244 · Jun 2021 · also written SI B64 04 21, B640421

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.

Official document on NHTSA (PDF) →

Details

Bulletin numberSIB 64 04 21
Also written: SI B64 04 21, B640421, 64 04 21, SIB-64-04-21, SI B640421
NHTSA ID10200244
Document IDs filedB640421
TypeService bulletin
Date
ModelsX5
Model years2019–2021
ChassisG05
EnginesB58, N63
Component (NHTSA)Electrical System
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.

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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.