See also:

If a warning light turns oor a warning buzzer sounds
Calmly perform the following actions if any of the warning lights turn on or flash. If a light turns on or flashes, but then turns off, this does not necessarily indicate a malfunction in the system ...

If your vehicle fails a smog-check test
If your vehicle fails a smog-check test, you may make a claim under the Emission Performance Warranty. To do so, take your vehicle to an authorized Lexus dealership and present a copy of the smog ...

Operating HomeLink®
Press the appropriate HomeLink® button. The HomeLink® indicator light should come on. The HomeLink® compatible transceiver in your vehicle continues to send a signal for up to 20 seconds as lo ...