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Service bulletin B661719

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10165245
Published by NHTSA2019-09-23
Manufacturer's numberB661719
Manufacturer's date2019-08-01
NHTSA componentSERVICE BRAKES, HYDRAULIC

NHTSA's summary

ACTIVE PARK DISTANCE CONTROL (PDC): UNDESIRED BRAKING. The vehicle applies the brakes on its own when reversing onto an inclined roadway or driveway. This applies only to the situation where the Active PDC option is activated via the iDrive. Software of the ultrasonic sensors and PDC control unit.

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

Vehicles listed
BMW X32018, 2019
BMW X42019

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20183662018-07-06. Brakes
18V4530002018-07-06. SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
B6617192025-05-02. Service bulletin. The vehicle applies the brakes on its own when reversing onto an inclined roadway or driveway. This appliesonly to the situation where the Active PDC option is activated via the iDrive.
B3402232023-06-26. Service bulletin. Brake squeak may occur with cold brakes and driving slowly or reversing
B3601212021-05-24. Service bulletin. Diagnosis of Compound Brake System Complaints in M Vehicles: 1. Visible cracks are caused by high thermal stresses during rapid heating and cooling of the brake discs. Braking from high speed with cold brake components (less than 212 degrees F) increases the likelihood of cracks to form.
B3405172020-08-31. Service bulletin. TICKING NOISE WHILE CORNERING WITHOUT THE BRAKES APPLIED: Ticking noise coming from front wheel while cornering without brakes applied, noticeable at low speeds. The vehicle must be moving.
B1703202020-06-15. Service bulletin. COOLANT LINE QUICK DISCONNECTS LEAK IN LOW TEMPERATURES AT OR BELOW -15Ë?C (5Ë?F): The coolant reservoir in the high or low temperature cooling system is low There may be a coolant leak under the vehicle There may be a check control message (ID166) to top up coolant The low temperature cooling system have a low level warning indicator. One or more faults may be stored related to the low temp cooling system: DME - 20A201 - charge air cooling system: Coolant pump protective function due to dry running active DME - 20A209 - charge air cooling system: Coolant pump protective function due to dry running active IHKA - 80120A - Compressor: Switch off due to excess pressure in the refrigerant circuit The outside temperature at the time of the complaint is at or below -15Ë? C (5Ë? F) The O-rings that seal the quick disconnect coolant lines will not seal properly when outside temperatures are at or below -15Ë? C (5Ë? F).
B5130162020-04-20. Service bulletin. TAILGATE UNINTENTIONALLY OPENS: This Service Information Bulletin (Revision 4) replaces SI B51 30 16 dated March 2018. Trunk/tailgate may open when vehicle is locked Trunk/tailgate may open while the vehicle is in motion usually after stopping such as a traffic light etc. Vehicle key trunk/tailgate button may be accidentally pressed thus opening the tailgate.
B3405172020-04-20. Service bulletin. TICKING NOISE WHILE CORNERING WITHOUT THE BRAKES APPLIED: This Service Information Bulletin (Revision 3) replaces SI B34 05 17 dated September 2017. Ticking noise coming from front wheel while cornering without brakes applied noticeable at low speeds. The vehicle must be moving. See attached video V34 01 20 Note: For a similar noise heard when parking with the brakes applied refer to SIB 31 01 12. Microscopic movement of the contact interface between the inner brake disc and the wheel bearing flange on vehicles equipped with lightweight brake discs.
B6210192020-01-21. Service bulletin. INCORRECT CONDITION BASED SERVICE DATA FOR BRAKE FLUID SERVICE. "Brake fluid service due since 12/2001" is displayed in the instrument cluster although the vehicle is only a maximum of 1 year old. Software error in the KOMBI (Instrument Cluster).
B6617192019-11-18. Service bulletin. ACTIVE PARK DISTANCE CONTROL (PDC): UNDESIRED BRAKING. This Service Information Bulletin (Revision 1) replaces SI B66 17 19 dated August 2019. What's New: Procedure - changed ISTA version. The vehicle applies the brakes on its own when reversing onto an inclined roadway or driveway. This applies only to the situation where the Active PDC option is activated via the iDrive.
B6617192019-09-23. Service bulletin. ACTIVE PARK DISTANCE CONTROL (PDC): UNDESIRED BRAKING. The vehicle applies the brakes on its own when reversing onto an inclined roadway or driveway. This applies only to the situation where the Active PDC option is activated via the iDrive. Software of the ultrasonic sensors and PDC control unit.