Another potential reason why your toyota won t start with smart key may be that you have hit the deactivation switch by mistake.
Toyota highlander key fob not detected.
Located at the bottom of the instrument panel below the steering wheel the smart key deactivation switch is a little known element that could cause you a headache.
Depending on the radio wave reception conditions it may be detected by the antenna outside the cabin and the door will become lockable from the outside possibly trapping the electronic key inside the vehicle.
If you believe that this may be the case for you hold the key fob as close to the push button start as you can while going through the motions of turning your vehicle on.
If the backup remote is able to unlock the doors then you know that it is a problem with the key fob and not with your vehicle s locking system.
This should help your weak key fob signal reach a little further so your toyota can detect it.
If you do not wish to use the steps below please call our service department at fox toyota.
There is a problem detected within the security system by the security module.
Just flip the switch and you will be back in action.
We would be more than happy to take a look at what is happening with your key fob and reprogram it for you.
Pop the old battery off and replace it with a new battery.
At times with key inside cock pit doors closed foot on brake car will not start screen reads key not detected check psn of key.
If still no luck try the spare key to see if the security system accepts it.
Try locking and unlocking the door with the key fob to reset the system.
Sometimes locking and unlocking the drivers door using the key will reset the system as well.
More information about your vehicle s key fob can be found in your owner s manual.
Inside you will find a small green circuit board that houses the small battery.
If i keep opening and closing doors pushing read more.