SENS-O-LOCK WC9000+ Guia Del Usuario página 21

To access the password entry screen, power on your handset but
do not engage the ignition. When the device displays the main
screen and shows "Link OFF," press and hold the right button
on the bottom of the handset. While keeping the button held,
engage the ignition, turning the key to the ON position. (As you
would normally to take a test.) The password input screen will
be displayed. (See Below) Enter the code as provided using the
touchscreen and press ENTER.
If you access this screen in error, or do not need to enter a code,
press EXIT.
The serial number of your handset is displayed as reference and
you may need to verify this number with your service provider.