# Service bulletin B662719

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: 10164017
- Published by NHTSA: 2019\-08\-19
- Manufacturer's number: B662719
- Manufacturer's date: 2019\-07\-01
- NHTSA component: ELECTRICAL SYSTEM; VISIBILITY; LANE DEPARTURE: WARNING

## NHTSA's summary

LANE CHANGE WARNING: LIGHT ON EXTERIOR MIRROR NO LONGER WORKS. The Lane Change Warning \(LCW\) light on either one or on both of the exterior \(side view\) mirrors no longer illuminates. This also activates a CCM for "Driver Assistance system restricted" to be displayed in the CID. Faulty exterior mirror glass or wire connection.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10164017-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10164017-9999.pdf)

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

## Components

Driver assistance, Electrical system, Glass, wipers and mirrors, Lane departure and lane keeping

## Vehicles listed

- 2019 BMW Z4

## Other bulletins for the same vehicles and component

- [B841422](/bulletins/10235206.md), 2023-05-01, Service bulletin: LANE DEPARTURE:LANE KEEP:NAVIGATION SYSTEM/SOFTWARE; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM\(GLOBAL POSITIONING SYSTEM\). Customer is shown an incorrect GPS location in the vehicle \(i.e., Nav Map, coordinates\).
- [B660619](/bulletins/10159146.md), 2019-04-22, Service bulletin: LANE DEPARTURE: LANE KEEP: STEERING ASSIST; LANE DEPARTURE: SENSING SYSTEM: CAMERA; EQUIPMENT. DRIVERS ASSISTANCE SYSTEM LIMITED SUPPORT CHECK CONTROL MESSAGE. INFORMATION Part Number Description Quantity Refer to ETK KaFAS camera \(Control unit and camera\).
- [B660419](/bulletins/10154759.md), 2019-03-18, Service bulletin: LANE DEPARTURE: LANE KEEP: STEERING ASSIST. INTERRUPTION OF AUTOMATED PARK ASSIST. Park Distance Control \(PDC\) distance tiles are displayed in the Central Information Display \(CID\); despite no actual obstacles being in close proximity to the vehicle.

JSON: [/v1/bulletins/10164017](/v1/bulletins/10164017)

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