# Service bulletin B520718

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10153704
- Published by NHTSA: 2019\-02\-25
- Manufacturer's number: B520718
- Manufacturer's date: 2018\-12\-01
- NHTSA component: SEATS

## NHTSA's summary

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.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10153704-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10153704-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Seats

## Vehicles listed

- 2014 to 2016 BMW 228I
- 2017 to 2018 BMW 230I
- 2013 to 2017 BMW 320I
- 2014 to 2017 BMW 328D
- 2012 to 2016 BMW 328I
- 2016 to 2017 BMW 330E
- 2017 BMW 330I
- 2012 to 2017 BMW 335I
- 2016 to 2017 BMW 340I
- 2014 to 2016 BMW 428I
- 2017 to 2018 BMW 430I
- 2014 to 2016 BMW 435I
- 2017 to 2018 BMW 440I
- 2013 BMW ACTIVE HYBRID 3
- 2014 to 2015 BMW ACTIVE HYBRID 3
- 2016 to 2018 BMW M2
- 2014 to 2016 BMW M235I
- 2017 to 2018 BMW M240I

## Recalls for the same vehicles and component

- [12V176000](/recalls/nhtsa/12V176000.md), 2012-04-20: SEATS:FRONT ASSEMBLY:HEAD RESTRAINT

## Other bulletins for the same vehicles and component

- [B520121](/bulletins/10242694.md), 2023-09-25, Service bulletin: SEATS. ?The front seat will not calibrate/initialize, and the stored faults cannot be deleted.
- [B650414](/bulletins/10227568.md), 2022-12-12, Service bulletin: LANE DEPARTURE; UNKNOWN OR OTHER; AIR BAGS; SEATS:BARRIERS; BACK OVER PREVENTION. According to the customer, the airbag warning light was on, but it may not be illuminated when the vehicle arrives in the workshop. 1. ACSM fault code "930A60 \- Seat occupancy detection, front passenger; malfunction" is stored. The fault may or may not currently be present. Or 2. ACSM fault code "930A1C \- Front passenger seat occupancy detection transmitting fault\(moisture\)" is stored. The fault may or may not currently be present.
- [B520121](/bulletins/10200234.md), 2021-08-09, Service bulletin: SEATS; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. Front seat will not calibrate/initialize, and the stored faults cannot be deleted
- [B513316](/bulletins/10200233.md), 2021-08-09, Service bulletin: STRUCTURE:BODY; STRUCTURE:FRAME AND MEMBERS; SEATS. Water sloshing noises coming from the rear passenger compartment \(left or right\) while driving Water ingress in the luggage compartment, or in the rear passenger compartment\- rear seat bench rear passenger compartment foot well rear passenger compartment side panel Failure of various control units installed in the area of the water removal channel
- [B110321](/bulletins/10198899.md), 2021-07-06, Service bulletin: SEATS. B58 ENGINE: ENGINE OIL FILTER REMOVAL PROCEDURE AND TOOLS . A. For the B58 engines, a BMW Oil Catch special tool for use in conjunction with removing the engine oilfilter insert is now available.
- [B520121](/bulletins/10188945.md), 2021-03-15, Service bulletin: SEATS. SEAT FAILS TO INITIALIZE DUE TO MISSING END STOP: Front seat will not calibrate/initialize.
- [B513316](/bulletins/10164006.md), 2019-08-19, Service bulletin: SEATS:MID/REAR ASSEMBLY; STRUCTURE:BODY. LOSHING NOISES/WATER IN REAR PASSENGER COMPARTMENT: This Service Information bulletin replaces SI B51 33 16 dated August 2016.
- [B520919](/bulletins/10163045.md), 2019-07-22, Service bulletin: SEATS. CRACKING NOISE FROM SEAT BACKREST. Groaning/Cracking noises are heard from the front seat backrest when the vehicle is cornering.
- [B520818](/bulletins/10153640.md), 2019-02-25, Service bulletin: SEATS. FRONT PASSENGER SEAT SPORADIC MOVEMENT. Occasional stopping of seat adjustability movement in the driver and front passenger seats when occupied.
- [B520116](/bulletins/10151264.md), 2018-12-10, Service bulletin: SEATS. Front Seat Backrests Vibrates on Rough Roads. Both front seat backrests vibrate and rattle while driving over rough roads with the seat in an unloaded condition \(no pressure applied on the backrest\). Play at the inner backrest pivot point.

JSON: [/v1/bulletins/10153704](/v1/bulletins/10153704)

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