change key battery Lexus ES300 1992 Air Conditioner And Audio

AIR CONDITIONER AND AUDIO
92
5. With your identification number appearing on the display,
press the (SCAN) button and hold it in until “SEC” appears
on the display. “SEC” will go off to indicate the system is set.
If invalid buttons have been used, “Err” will appear on the
display before “SEC” appears. Try again from step 3.
Indicator light
“SEC”
Once the system is set, the indicator light turns on and off with
the ignition switch in “OFF” and “SEC” will appear each time
the key is turned to the “ACC” position.
To change the identification number for some reason, cancel
the system (See “(b) Cancelling the anti-theft system”.) and set
it again with a new number.
The system will be activated if the electrical power source is
disconnected from the radio unit. When the system is
activated, the audio system cannot be turned on even after the
power supply resumes and “SEC” will appear on the display.
If this happens, such as when the battery is discharged, see
“(c) If the anti-theft system is activated”.