See also:

Repair delays
If a Lexus dealership is unable to complete repairs on your vehicle within 30 days, you may have the repairs made under Lexus’ provisions for emergency warranty repairs. ...

Maintenance and Lexus Warranty Coverage
Maintaining your vehicle according to the recommendations in this booklet is required to ensure that your warranty coverage remains intact. You should keep detailed records of vehicle maintenance, ...

Initializing the system
Select “Initialize” and then “Confirm” using the “TUNE/SEL” knob. Select “Confirm” again using the “TUNE/SEL” knob.  - Initialization • The following data in the sy ...