See also:

Electrical system
...

Have the vehicle inspected by your Lexus dealer immediately.
Failing to investigate the cause of the following warnings may lead to the system operating abnormally and possibly cause an accident. Have the vehicle inspected by your Lexus dealer immediately. ...

Vehicle Service Agreements
If you plan to keep your vehicle for several years or if you accumulate mileage quickly, you may want to purchase a Lexus vehicle service agreement. These agreements cover the cost of specific rep ...