PROCEDURE
(a) Enter the "Vehicle Signal Check Mode" screen. [Refer to Check Vehicle Signal in Operation Check (See page
![]() (b) Check that the display for "TAIL" changes between ON and OFF according to the light control switch operation. OK:
HINT: This display is updated once per second. As a result, it is normal for the display to lag behind the actual switch operation. Result
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Toyota Tundra Service Manual > Lighting System: Automatic High Beam System does not Operate or Operation Indicator does not
Illuminate
DESCRIPTION The main body ECU (multiplex network body ECU) controls the automatic high beam system based on signals received from the forward recognition camera. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: When replacing the combination meter assembly, always replace it with a new one. If a combi ...