REMOVAL PROCEDURE 1. REMOVE FRONT DOOR SCUFF PLATE LH for Double Cab: (See page for CrewMax: (See page 2. REMOVE COWL SIDE TRIM BOARD LH
3. REMOVE INSTRUMENT SIDE PANEL LH
4. REMOVE LOWER INSTRUMENT PANEL FINISH PANEL SUB-ASSEMBLY LH
5. REMOVE AUTO HIGH BEAM SWITCH 
(a) Detach the 2 claws and remove the auto high beam switch from the lower instrument panel finish panel sub-assembly LH. |
Toyota Tundra Service Manual > Lighting System: Automatic High Beam System (B124B)
DESCRIPTION The main body ECU (multiplex network body ECU) determines the status of the automatic high beam system based on the automatic high beam system signal from the forward recognition camera. DTC No. Detection Item DTC Detection Condition Trouble Area B124B Automatic High Beam System Malfunct ...
