Luckily the toyota tundra power door locks are pretty easy to self diagnose what s wrong.
Tundra remote door lock reprogram.
Repeat button procedure to program remaining remote transmitters.
Repeat steps a and b in step 6 for each new remote.
System should now lock and unlock vehicle once to confirm registration twice to indicate registration has failed.
If the door locks cycle twice repeat steps a and b in step 6 as the remote was not accepted.
The locks should cycle once to verify that the car has accepted your remote.
If you have done everything correctly within three seconds the door locks should lock then unlock automatically.
Turn the ignition to on and then back to off and remove the key from the ignition.
Press and hold lock and unlock button for 1 5 seconds.
You must complete these operations within 40 seconds.
Close the driver s door.
If you key fob no longer unlocks the doors it is time for a new battery.
Using the door control pad located on the driver s side door press the lock and unlock buttons once again for five passes.
Each set represents one pass.
This is the best and easiest fix.
Remove your key from the ignition then wait for doors to lock and then unlock twice.
Insert your key into the ignition switch and put it in the run position.
Press and release lock or unlock button.
While there is the possibility of a pretty big electrical issue most of the problems are minor and easy to fix.
If not start again at step 1.