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SIB 52 07 18: Seat thigh support upholstery is protruding

Seat thigh support upholstery is protruding on BMW E90/E92/E93/F22 and other models (2012–2018); BMW explains the cause and the approved repair.

BMW service bulletin · NHTSA ID 10153704 · Dec 2018 · also written SI B52 07 18, B520718

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.

SEAT THIGH SUPPORT UPHOLSTERY IS PROTRUDING. The upholstery may dislodge slightly from the thigh support base over time from repeated compression due to normal use.

NHTSA's summary of this communication (excerpt)

Official document on NHTSA (PDF) →

Details

Bulletin numberSIB 52 07 18
Also written: SI B52 07 18, B520718, 52 07 18, SIB-52-07-18, SI B520718
NHTSA ID10153704
Document IDs filedB520718
TypeService bulletin
Date
Models228i, 230i, 320i, 328d, 328i, 330e, 330i, 335i, 340i, 428i, 430i, 435i, 440i, ActiveHybrid 3, M2, M235i, M240i
Model years2012–2018
ChassisE90, E92, E93, F22, F23, F30, F31, F32, F33, F34, F36, F87
EnginesB46/B48, B58, N20, N47, N52, N55
Component (NHTSA)Seats

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 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.

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