Service bulletin B340416
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 | 10147014 |
| Published by NHTSA | 2018-11-05 |
| Manufacturer's number | B340416 |
| Manufacturer's date | 2016-08-01 |
| NHTSA component | SERVICE BRAKES, AIR:ANTILOCK:WHEEL SPEED SENSOR; SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:WHEEL SPEED SENSOR/TONE RING; ELECTRONIC STABILITY CONTROL (ESC); BACK OVER PREVENTION; WHEELS |
NHTSA's summary
DRIVING STABILIZATION CONTROL FAILURE: ABS/DSC INSTRUMENT LAMPS LIT. ABS/DSC lamps lit in instrument cluster. Fault codes may be saved in the DSC control unit: 480AAD - wheel speed sensor - rear left - smoke monitoring 480AAC - wheel speed sensor - rear left - unexpected jump in the signal 4809B9 - wheel speed sensor - rear left - driving off recognition faulty 480716 - wheel speed sensor - rear left - plausibility: direction of rotation 4809B7 - wheel speed sensor - rear left - missing tooth 480719 - wheel speed sensor - rear right - plausibility: direction of rotation 480686 - wheel speed sensor - rear right - driving off recognition faulty 480AB3 - wheel speed sensor - rear right - unexpected jump in the signal 480AB4 - wheel speed sensor - rear right - smoke monitoring 4809C2 - wheel speed sensor - rear right - missing tooth Rear wheel pulse generator (wheel speed sensor) retaining screw is loose, missing or broken.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Brakes, Driver assistance, Wheels, Anti-lock brakes, Backup camera, Wheel speed sensor
| BMW X1 | 2016, 2017 |
|---|---|
| BMW X1 SAV | 2016 to 2017 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| B340616 | 2018-11-05. Service bulletin. "DSC ""WHEEL SPEED SENSOR"" FAULT CODES AND MALFUNCTION INDICATOR LAMP- DIAGNOSTIC. 1. DSC's fault codes stored from two different wheel speed sensors (both front or both rear): 4809B0 - wheel speed sensor - front left - drive off recognition faulty and 4809CD - wheel speed sensor - front right - drive off recognition faultyor 4809B9 - wheel speed sensor - rear left - drive off recognition faulty and 480686 - wheel speed sensor - rear right - drive off recognition faulty. 2. Next ignition ON (after above codes stored). a) DME fault can occur:1F054D - drive, safety function: Drive power output reduced, DSC signals implausible and b) Malfunction Indicator Lamp (MIL) may light up. Faulty drive off recognition due to: a towing operation with a raised axle operation of the vehicle on the vehicle hoist operation of the vehicle on the roller test stand DSC diagnosis recognizes implausible wheel speeds, so no control is possible. DME fault is entered on safety grounds since the DSC fault still exists after a terminal change and may only be removed while driving." |
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