Lexus GS450h Owner's Manual page 463

Warning light
(If equipped)
(If equipped)
*
: Driver's and front passenger's seat belt buzzer:
The driver's and front passenger's seat belt buzzer sounds to alert the driver and front
passenger that his or her seat belt is not fastened. The buzzer sounds intermittently 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 the 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 retailer or
Lexus authorized repairer, or any reliable repairer 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.
GS450h_300h_OM_OM30F92E_(EE)
Warning light/Details/Actions
Tire pressure warning light
When the light comes on:
Low tire inflation pressure such as
• Natural causes (P. 464)
• Flat tire (P. 498, 509)
 Adjust the tire inflation pressure to the specified level.
The light will turn off after a few minutes. In case the light does
not turn off even if the tire inflation pressure is adjusted, have the
system checked by any authorized Lexus retailer or Lexus
authorized repairer, or any reliable repairer.
When the light comes on after blinking for 1 minute:
Malfunction in the tire pressure warning system
 Have the system checked by any authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer.
LKA warning light
The warning light comes on and a warning message is displayed to
indicate that the LKA (Lane-Keeping Assist) system is not available
temporarily or has detected a malfunction.
 P. 478
7-2. Steps to take in an emergency
463
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