DTC Troubleshooting: B1A05
DTC B1A05: Auto High-Beam Control Unit Internal Failure
DTC Description
DTC
B1A05 Auto high-beam control unit internal failure
  

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.

1.
Problem verification:

Problem verification
?1.
Clear the DTCs with the HDS.


?2.
Press the engine start/stop button to select the OFF mode and then the ON mode.

?3.
Wait for at least 10 seconds.

?4.
Check for DTCs with the HDS.
DTC Description
DTC
B1A05 Auto high-beam control unit internal failure
  

Is DTC B1A05 indicated?

     
YES
     
     
     
Faulty auto high-beam control unit; replace the rearview mirror.?
     
NO
     
     
     
Intermittent failure, the system is OK at this time. Check for loose or poor connections.?