PROCEDURE
(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.
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Toyota Tundra Service Manual > Navigation System: Panel Switches do not Function
PROCEDURE 1. CHECK PANEL SWITCH (a) Check for foreign matter on the display. OK: The display is clean. NG REMOVE ANY FOREIGN MATTER FOUND OK 2. CHECK PANEL SWITCH (OPERATION CHECK) (a) Enter the "Panel & Steering Switch Check Mode" screen. [Refer to Check Panel & Steering Switch in Operation ...