See also:

Noise from under vehicle after turning off the engine
Approximately five hours after the engine is turned off, you may hear sound coming from under the vehicle for several minutes. This is the sound of a fuel evaporation leakage check and, it does no ...

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 ...

If you think something is wrong
If you notice any of the following symptoms, your vehicle probably needs adjustment or repair. Contact your Lexus dealer as soon as possible. - Visible symptoms l Fluid leaks under the vehicle ( ...