# Service bulletin B520816

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: 10146587
- Published by NHTSA: 2018\-11\-05
- Manufacturer's number: B520816
- Manufacturer's date: 2017\-03\-01
- NHTSA component: SEATS

## NHTSA's summary

"FRONT SEAT ADJUSTMENT, WRONG DISPLAY/ERROR RECOGNITION \(FAULTY DETECTION\) IN CID What is new ? G30 has been added. ? ""Correction"" has changed from programming solution to replace seat switch. ? "Procedure" has been changed to replace the seat switch instead of programming. ? ""Parts Information"" has been added for the seat switch. ? Warranty Labor Ops have changed to reflect the updated procedure to replace the seat switch. This Service Information bulletin supersedes SI B52 08 16 dated October 2016. . The seat adjustment is erroneously displayed in the Central Information Display \(CID\) even though no adjustment was made at the seat switch. Front seat adjustment switch"

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2017/MC-10146587-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2017/MC-10146587-0001.pdf)

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

## Components

Seats

## Vehicles listed

- 2017 BMW 530I
- 2017 BMW 540I
- 2017 BMW 550I
- 2016 BMW 750LI
- 2017 BMW F800 R
- 2017 BMW R NINE T

## Other bulletins for the same vehicles and component

- [B720125](/bulletins/11028928.md), 2026-02-23, Warranty extension: AIR BAGS; ELECTRICAL SYSTEM; SEATS. A situation may occur where the front passenger seat is not occupied; however, a “fasten seat belt” warning and a front passenger seat air bag deactivation message appears. If the situation is currently present, sit in the seat and move the seat to a slightly different position. The POL \(Passenger Occupancy Light\) light should now function correctly. In some cases, the Air bag Warning Light was illuminated, and the following Advanced Crash Safety Module \(ACSM\) fault is stored: 930A1C \- Front passenger seat occupancy detection transmitting fault \(moisture\)
- [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.
- [B520621](/bulletins/10200235.md), 2021-08-09, Service bulletin: EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; SEATS. The driver's seat and/or passenger seat rattles \("cracking" noise\) during load reversal. There is a slight movement in the seat that is most noticeable when moving forwards and backwards.
- [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
- [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.
- [B521119](/bulletins/10164008.md), 2019-08-19, Service bulletin: SEATS:BARRIERS; STRUCTURE; SEATS. CLICK CLACK NOISES IN BACKREST AREA OF FRONT SEAT: An alternating "click\-clack" noise is heard from the backrest area of the front seat when an occupant sits in the seat or when the vehicle is cornering. Due to the elimination of the NED \(Non\-Electrical Diagnosis\) test plan for seat noise from ISTA we are releasing this bulletin. Seat backrest frame is touching the seat cover.
- [B520417](/bulletins/10146680.md), 2018-11-05, Service bulletin: SEATS. BACKREST NOISES WHEN UNDER LOAD. Pop noise coming from seat backrest when pressure exerted toward rear or while pulling away from a stop. Friction between top right rivet holding lordosis \(back Lumbar support\) valve block and backrest cushion spring.
- [B520518](/bulletins/10145335.md), 2018-10-09, Service bulletin: SEATS; ELECTRICAL SYSTEM. SEAT MEMORY SWITCH SPORADICALLY NOT FUNCTIONING: Selecting one of the saved seat positions \(via the memory seat position switch on the door panel\), fails to work.

JSON: [/v1/bulletins/10146587](/v1/bulletins/10146587)

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