Toyota LEXUS LS430 2005 Manual page 108

How to check all the service reminder
indicators
(except the low fuel level warning light):
1. Apply the parking brake.
2. Open the door.
The following service reminder indicator should come on. It
goes off when you close the door completely.
3. Turn the ignition switch to "ON".
The following service reminder indicators should come on.
W287
or
or
w243
GAUGES, METERS AND SERVICE REMINDER INDICATORS
The following service reminder indicator goes off after a few
seconds.
The following service reminder indicator goes off after 6
seconds.
If any service reminder indicator or warning buzzer does not
function as described above, have it checked by your Lexus
dealer as soon as possible.
or
w243
W287
or
89