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SIB 31 01 20: Axle fault codes
Axle fault codes on BMW G20/G21/G29/F30 and other models (2019–2021); the fix is replacing the affected part.
BMW service bulletin · NHTSA ID 10182906 · Oct 2020 · also written SI B31 01 20, B310120
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.
SERVICE ACTION - REPLACE THE WISHBONE OR TENSION STRUT: An incorrectly pressed-in rubber mount in the wishbone, or hydraulic mount in the tension strut can lead to acoustic abnormalities in the front axle.
Details
| Bulletin number | SIB 31 01 20 Also written: SI B31 01 20, B310120, 31 01 20, SIB-31-01-20, SI B310120 |
|---|---|
| NHTSA ID | 10181218, 10182607, 10182906 (revisions) |
| Document IDs filed | B310120 |
| Type | Service bulletin |
| Date | (first filed Sep 2020) |
| Models | 330e, 330i, M340i, Z4 |
| Model years | 2019–2021 |
| Chassis | G20, G21, G29, F30, F34 |
| Engines | B46/B48, B58 |
| Component (NHTSA) | Equipment Adaptive/Mobility 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.
Related repair prices
More for these cars
F30 repair costs G20 repair costs All B46/B48 bulletins All B58 bulletins
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Before you pay, check the VIN for recalls. Some failures are covered by a safety recall or a BMW warranty extension.
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.