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:
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Toyota Tundra Service Manual > 1ur-fe Engine Control: Fuel Pump Relay
On-vehicle InspectionON-VEHICLE INSPECTION PROCEDURE 1. REMOVE FUEL PUMP RELAY (F/PMP) (a) Remove the fuel pump relay from the engine room relay block. 2. INSPECT FUEL PUMP RELAY (a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Conditio ...