BMW X3 2020 — technical service bulletin
Bulletin B640919 · NHTSA communication 10166389 · issued Sep 1, 2019
Technical service bulletin
communication type
Engine and Engine Cooling
component
2020
model years
2
vehicle entries
Official summary
SERVICE ACTION: CHECKING HEATER HOSE FOR PROPER INSTALLATION: The installation area between the heater return hose and the drive belt is very limited. If the hose is not secured properly this could cause contact with the drive belt. Limited space between the heater hose and the drive belt along with possible incorrect clip installation.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.