DTC B13BD-49: Heated Steering Wheel Control Unit Internal Malfunction [Dash-Electrical Supply Unit]: Outline

WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.

DTC B13BD:49 [DASH-ELECTRICAL SUPPLY UNIT] DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Heated steering wheel control unit internal malfunction
Detection condition	The dash-electrical supply unit detects the heated steering wheel control unit internal malfunction.
Fail-safe	Stops the steering warmer output.
Possible cause	Heated steering wheel control unit malfunction Dash-electrical supply unit malfunction
System wiring diagram	Not applicable
Connector diagram	Not applicable