Toyota Tundra Service Manual: Pressing Power Switch does not Turn on System

PROCEDURE

1.	CHECK VEHICLE CONDITION

(a) Check that conditions in the cabin are not likely to cause condensation.

HINT:

This problem occurs when the cabin is humid and the temperature changes rapidly. This may produce condensation, resulting in a short circuit.

OK:

Condensation is not likely to be produced.

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

DRY OUT CABIN AND RECHECK CONDITION

Toyota Tundra Service Manual > Pre-collision System: Lost Communication with ECM / PCM "A" (U0100,U0125,U0126,U0129,U0137)
DESCRIPTION These DTCs are stored when a communication malfunction occurs between ECUs that perform pre-collision system control. DTC No. Detection Item DTC Detection Condition Trouble Area U0100 Lost Communication with ECM / PCM "A" When the vehicle is being driven at a speed of 5 km/h (4 ...

Toyota Tundra Owners Manual