See also:

Disabling pre-collision braking
1.Pre-collision braking disabled 2.Pre-collision braking enabled The “PCS” warning light turns on when pre-collision braking is dis- abled. ...

Have the malfunction repaired immediately.
After taking the specified steps to correct the suspected problem, check that the warning message and light go off. ...

Maintenance requirements
To ensure safe and economical driving, day-to-day care and regular maintenance is essential. It is the owner’s responsibility to perform regular checks. Lexus recommends the following maintenance. ...