# Service bulletin B720220

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: 10172510
- Published by NHTSA: 2020\-03\-16
- Manufacturer's number: B720220
- Manufacturer's date: 2020\-02\-01
- NHTSA component: SEAT BELTS

## NHTSA's summary

SAFETY BELT WARNING GONG SOUNDS AFTER UNBUCKLING WHILE VEHICLE IS STATIONARY. After a vehicle has been programmed to an I\-level greater than 19\-11\-5xx and lower than I\-level 20\-03\-530; the safety belt \(aka seat belt\) acoustic warning sounds when in Park \(engine running\) and the safety belt is unbuckled. The chime/gong lasts for up to 1 minute 40 seconds. The customer only expects the acoustic warning when the vehicle is moving and the safety belt is not buckled. The acoustic warning can occur when the seat is occupied and the safety belt buckle is opened on the driver's or passenger's side. Software in the ACSM4 Control Unit.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10172510-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10172510-9999.pdf)

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

## Components

Seat belts

## Vehicles listed

- 2014 to 2020 BMW I3
- 2014 to 2017 BMW I8
- 2019 BMW I8
- 2016 to 2020 BMW X1
- 2016 to 2017 BMW X1 SAV

## Recalls for the same vehicles and component

- [2019276](/recalls/tc/2019276.md), 2019-06-07: Seats And Restraints
- [16V747000](/recalls/nhtsa/16V747000.md), 2016-10-17: SEAT BELTS:FRONT:RETRACTOR
- [2016107](/recalls/tc/2016107.md), 2016-03-03: Seats And Restraints

## Other bulletins for the same vehicles and component

- [B511815](/bulletins/10176372.md), 2020-06-15, Service bulletin: SEAT BELTS. A Check Control Message is displayed for the Tailgate Lock Open: A Check Control Message is displayed indicating that the tailgate is open even though it is mechanically closed. Faulty tailgate lock or incorrect adjustment.
- [B720118](/bulletins/10153713.md), 2019-02-25, Service bulletin: SEAT BELTS; EQUIPMENT ADAPTIVE/MOBILITY. GROANING NOISE FROM DRIVER'S BACKREST. When the vehicle interior heats up beyond approx. 90 degrees Farenheit.

JSON: [/v1/bulletins/10172510](/v1/bulletins/10172510)

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