BMW TSB #640713
2015 BMW 428
Affected Component: VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:FAN/MOTOR
- Summary
- Service Action: Replace Blower Motor Regulator. The blower motor regulator has an internal fault; after starting the engine, there may be a delay of up to a minute before the blower motor comes on CAUSE Faulty blower motor regulator (output stage)