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SIB 37 01 21: Automatic (asc) fault codes

Automatic (asc) fault codes on BMW G05/G06 models (2019–2021); BMW explains the cause and the approved repair.

BMW service bulletin · NHTSA ID 10208178 · Jan 2022 · also written SI B37 01 21, B370121

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.

After performing vehicle test, fault code 80422D "self-leveling suspension missing slave" will not clear.

NHTSA's summary of this communication (excerpt)

Official document on NHTSA (PDF) →

Details

Bulletin numberSIB 37 01 21
Also written: SI B37 01 21, B370121, 37 01 21, SIB-37-01-21, SI B370121
NHTSA ID10203337, 10208178 (revisions)
Document IDs filedB370121
TypeService bulletin
Date (first filed Sep 2021)
ModelsX5, X6
Model years2019–2021
ChassisG05, G06
EnginesB58, N63
Component (NHTSA)Electronic Stability Control › Automatic (Asc)
Suspension

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

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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.