Replace the battery with a new one if it is depleted.
You will need the following items:
Replacing the battery 1. Remove the cover. To prevent damage to the key, cover the tip of the screwdriver with a rag. To prevent the buttons from being disassembled, face the button surface downward.
2. Remove the module.
3. Open the case cover using a coin protected with tape, etc., and remove the depleted battery. Insert a new battery with the "+" terminal facing up.
■Use a CR2016 lithium battery
■If the key battery is depleted The following symptoms may occur:
|
Toyota Tundra Service Manual > Air Conditioning System(for Manual Air Conditioning System): IG Power Source Circuit
DESCRIPTION When the ignition switch is turned ON, positive (+) battery voltage is applied to the air conditioning amplifier. WIRING DIAGRAM PROCEDURE 1. INSPECT FUSE (ECU-IG1 NO.3) (a) Remove the ECU-IG1 NO.3 fuse from the driver side junction block. (b) Measure the resistance according to the valu ...