If a warning light turns on or 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.
Stop the vehicle immediately. Continuing to drive the vehicle may be dangerous.
The following warning indicates a possible problem in the brake system.
Immediately stop the vehicle in a safe place and contact your Lexus dealer.

*: Parking brake engaged warning buzzer:
A buzzer will sound if the vehicle is driven at a speed of approximately 3 mph (5 km/h) or more.
- Stop the vehicle immediately.
- Have the vehicle inspected by your Lexus dealer immediately.
- Have the malfunction repaired immediately.
See also:
Cleaning and protecting the vehicle exterior
Perform the following to protect the vehicle and maintain it in prime
condition.
l Working from top to bottom, liberally apply water to the
vehicle body, wheel wells and underside of the vehicle ...
Radar sensor
The radar sensor detects vehicles or other obstacles on or near the road ahead
and determines whether a collision is imminent based on the position, speed, and
heading of the obstacles.
...
Cool box
While the engine is running, the cool box, which is cooled by the air
conditioning, can be used.
Lift the lid while pulling up
the lower lever to release the
lock.
On/off
When on, the indica ...
