Lexus RC300h 2017 Manual page 540

540
8-2. Steps to take in an emergency
*
1
: Open door warning buzzer:
P. 544
*
2
: Seat belt warning buzzer:
The seat belt warning buzzer sounds to alert the driver, front passenger and rear pas-
sengers that his or her seat belt is not fastened. The buzzer sounds for 30 seconds
after the vehicle reaches a speed of 20 km/h (12 mph). Then, if the seat belt is still
unfastened, the buzzer will sound in a different tone for 90 more seconds.
Front passenger detection sensor, seat belt reminder and warning buzzer
■
If luggage is placed on a front passenger seat, the front passenger detection sensor
●
may cause the warning light to flash and the warning buzzer to sound even if a passen-
ger is not sitting in the seat.
If a cushion is placed on the seat, the sensor may not detect a passenger, and the warn-
●
ing light may not operate properly.
If the malfunction indicator lamp comes on while driving
■
The malfunction indicator lamp will come on if the fuel tank becomes completely empty.
If the fuel tank is empty, refuel the vehicle immediately. The malfunction indicator lamp
will go off after several trips.
If the malfunction indicator lamp does not go off, contact any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional as soon as possible.
Electric power steering system warning light (warning buzzer)
■
When the 12-volt battery charge becomes insufficient or the voltage temporarily drops,
the electric power steering system warning light may come on and the warning buzzer
may sound.
When the tire pressure warning light comes on
■
Carry out the following procedure after the tire temperature has lowered sufficiently.
Check the tire inflation pressure and adjust to the appropriate level.
●
If the warning light does not go out even after several minutes, check that the tire infla-
●
tion pressure is at the specified level and carry out initialization.
The warning light may come on again if the above operations are conducted without first
allowing the tire temperature to lower sufficiently.
The tire pressure warning light may come on due to natural causes
■
The tire pressure warning light may come on due to natural causes such as natural air
leaks and tire inflation pressure changes caused by temperature. In this case, adjusting
the tire inflation pressure will turn off the warning light (after a few minutes).
When a tire is replaced with the spare tire (if equipped)
■
The spare tire is not equipped with a tire pressure warning valve and transmitter. If a tire
goes flat, the tire pressure warning light will not turn off even though the flat tire has been
replaced with the spare tire.
Conditions that the tire pressure warning system may not function properly
■
P. 489