KEYLESS ENTRY AND KEYLESS IGNITION OPERATION:
The Lexus IS-F vehicles do not require the operator to insert a key into a key cylinder to
unlock a door or start the vehicle. These vehicles “sense” the proximity of the key and
will unlock the door(s) with the key close to the vehicle and when contact is made with
the outside door release handle. Once the keys are inside the vehicle the operator can
now use the push button start/stop feature of this vehicle. When the on-board computer
sense that proper key is in the vehicle, the green LED in the “ENGINE START STOP”
button (Figure 16) will illuminate. To turn the ignition to the accessory position, depress
the button once and items like the radio or on-board navigation system will become
active. A second press of the button will turn the vehicle to the “ON” position where
items like the instrument gauges will operate. To start the vehicle, the operator needs to
depress the brake pedal then press “ENGINE START STOP” button until the engine
starts. To shut the engine off, depress the “ENGINE START STOP” button again.
Figure 16
Figure 17
If there is a problem with the transponder or the battery in the key fob a display should
appear in the middle of the instrument panel like the one shown in (Figure 17).
If this is occurring on a vehicle you encounter, hold the key fob against the chrome ring
around the “ENGINE START STOP” button, depress the brake pedal then depress the
“ENGINE START STOP” button to start the vehicle. If the vehicle starts, ensure the
operator knows to hold the key fob against the chrome ring to start the vehicle and then
direct the operator to take the vehicle to the closest Lexus dealer to have the problem
repaired.
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