DTC U3000-4B: When Replacing A Blind Spot Monitoring (BSM) Control Module (RH) Having Any Of The Following Part Numbers, It Is Necessary To Replace The Blind Spot Monitoring (BSM) Control Module (LH) At The Same Time To Perform The Configuration Normally.: Notes

WARNING: This page is about a different car, the 2016 Mazda CX-3. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION:

When replacing a blind spot monitoring (BSM) control module (RH) having any of the following part numbers, it is necessary to replace the blind spot monitoring (BSM) control module (LH) at the same time to perform the configuration normally.
- DB2R-67Y80
- DB2R-67Y80 A

Description	Temperature temporarily increases depending on various external and environmental factors (Blind spot monitoring (BSM) control module (LH) or (RH)
Detection condition	Blind spot monitoring (BSM) control module internal temperature of 115 °C {239 °F} or more detected for 10 s or more with the ignition switched ON (engine off or on).
Fail-safe	Blind spot monitoring (BSM) system is stopped.
Possible cause	Temporary rise in temperature due to some external environment factor Blind spot monitoring (BSM) control module (RH) malfunction Blind spot monitoring (BSM) control module (LH) malfunction
System wiring diagram	Not applicable