2019 LEXUS GS300H Owners Manual

4817-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30F92E_(EE)
Indicates that the power switch is turned off or turned to ACCESSORY mode and the driver’s door is opened
while the lights are turned on A buzzer also sounds. Turn the lights off.
(If equipped)
Indicates that the moon roof is not fully closed (with the
power switch off, and the driver’s door open) A buzzer also sounds. Close the moon roof.
Indicates that the windows are not fully closed (with the
power switch off, and the driver’s door open) A buzzer also sounds. Close all the windows.
(If equipped)
Indicates that the windows and the moon roof are not
fully closed (with the power switch off, and the driver’s door open)A buzzer also sounds.
 Close all the windows and the moon roof.
Indicates a malfunction in the brake hold system A buzzer also sounds. Have the vehicle inspected by any authorized Lexus
retailer or Lexus authorized repairer, or any reliable repairer.
Warning messageDetails/Actions
(Flashes)
(Flashes)
(Flashes)
(Flashes)
(Flashes)

4827-2. Steps to take in an emergency
GS450h_300h_OM_OM30F92E_(EE)
Indicates that the brake hold system cannot be turned off A buzzer also sounds.
 Depress the brake pedal.
Indicates that the brake hold system is not available
The reason the brake hold system is not available may be displayed.A buzzer also sounds.
 Close the driver’s door.  Fasten the driver’s seat belt.
Indicates that the brake hold system is unable to con- tinue brake hold function
The reason the brake hold system is not continue may be displayed.A buzzer also sounds.
 Depress the brake pedal.  Close the driver’s door.  Fasten the driver’s seat belt.
Warning messageDetails/Actions

4837-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30F92E_(EE)
Indicates that the vehicle is unable to drive over 110 km/h
(65 mph) until the transmission warms up A buzzer also sounds. Wait until the transmission warms up.
Indicates that the parking brake is set automatically while the brake hold system is holding the brakes
A buzzer also sounds.  Release the parking brake.
Indicates a malfunction in the Drive-Start Control system
A buzzer also sounds.  Have the vehicle inspected by any authorized Lexus retailer or Lexus authorized repairer, or any reliable
repairer.
Indicates a malfunction in the brake override system
A buzzer also sounds.  Have the vehicle inspected by any authorized Lexus retailer or Lexus authorized repairer, or any reliable
repairer.
Warning messageDetails/Actions

4847-2. Steps to take in an emergency
GS450h_300h_OM_OM30F92E_(EE)
Indicates that engine oil level is low This message may appear if the vehicle is stopped on a
slope. Move the vehicle to a level surface and check to see if the message disappears.A buzzer also sounds.
 Check the level of engine oil, and add if necessary.
Indicates that the hybrid system has overheated This message may be displayed when driving under
severe operating conditions. (For example, when driv- ing up a long steep hill.)A buzzer also sounds.
 Stop and check. (P. 535)
Indicates a malfunction in: • The AHS (Adaptive High-beam System) (ifequipped);
• The Automatic High Beam (if equipped); • The AFS (Adaptive Front-lighting System) (ifequipped); or
• The LED headlight system A buzzer also sounds. Have the vehicle inspected by any authorized Lexus
retailer or Lexus authorized repairer, or any reliable repairer.
(If equipped)
Indicates a malfunction in the RSA (Road Sign Assist)
A buzzer also sounds  Have the vehicle inspected by any authorized Lexus retailer or Lexus authorized repairer, or any reliable
repairer.
Warning messageDetails/Actions

4857-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30F92E_(EE)
Indicates that the accelerator and brake pedals are being depressed simultaneously, and the brake override
system is operating.  Release the accelerator or brake pedal. (P. 201)
(If equipped)
Indicates that the tire inflation pressure is low
 Check the tire inflation pressure, and adjust to the appropriate level.
Warning messageDetails/Actions
(Flashes)

4867-2. Steps to take in an emergency
GS450h_300h_OM_OM30F92E_(EE)
(If equipped)
Indicates a malfunction in the tire pressure warning sys- tem
 Stop the vehicle in a safe place and turn the power switch off then on again. If the tire pressure warningindicator flashes for 1 minute then illuminates, there
is a malfunction in the system. Have the vehicle inspected by any authorized Lexus retailer or Lexusauthorized repairer, or any reliable repairer.
(If equipped)
Indicates that the tire position information cannot be rec-ognized
 Drive for a short while and check if the display updates.If the radio wave conditio ns improve, the display
may return to normal. If the tire pressure is still not displayed after driving for several minutes, stop thevehicle in a safe place, turn the power switch off
then on again, and start driving. If the tire pressure is still not displayed even after repeating this processseveral times, have the vehicle inspected by any
authorized Lexus retailer or Lexus authorized repairer, or any reliable repairer.
Indicates that the washer fluid level is low
 Add washer fluid.
Indicates that remaining fuel is approximately 9.9 L
(2.6 gal., 2.2 Imp.gal.) or less  Refuel the vehicle.
Warning messageDetails/Actions

4877-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30F92E_(EE)
Indicates that the outside temperature is approximately
3 C (37F) or lower A buzzer also sounds. Drive carefully, as the road may be icy.
Indicates that the engine oil is scheduled to be changed  Check the engine oil and change if necessary. After changing the engine oil, the oil change system
should be reset. ( P. 406) (The indicator will not work properly unless the oilmaintenance data has been reset.)
(If equipped)
Indicates that the fuel in jectors require maintenance
soon  Have any authorized Lexus retailer or Lexus autho- rized repairer, or any reliable repairer replenish the
injector cleaner to the fuel tank and reset the mes- sage as necessary.
Indicates that the engine oil and oil filter should bechanged Have the engine oil and oil filter checked and/or
changed by any authorized Lexus retailer or Lexus authorized repairer, or any reliable repairer. Afterchanging the engine oil, the oil change system
should be reset. ( P. 406)
(If equipped)
Indicates that the fuel injectors require maintenance
 Have any authorized Lexus retailer or Lexus autho- rized repairer, or any reliable repairer replenish theinjector cleaner and reset the message.
Warning messageDetails/Actions

4887-2. Steps to take in an emergency
GS450h_300h_OM_OM30F92E_(EE)
(If equipped)
Indicates that the Automatic High Beam switch was pressed while the low beams were on Turn the high beam headlights on before pressing
the Automatic High Beam switch.
(If equipped)
Indicates that the Adaptive High-beam System switch was pressed while th e low beams were on  Turn the high beam headlights on before pressing
the Adaptive High-beam System switch.
(If equipped)
Indicates that, since the VSC (Vehicle Stability Control)
system was turned off, the pre-crash braking and pre- crash brake assist are stopped (The pre-crash warningfunction will be operational)
 Turn the VSC on. (P. 327)
(If equipped)
Indicates that the PCS (Pre-Crash Safety system) is tem- porarily unavailableA buzzer also sounds.
 When conditions improve, the system resumes operation. If this item is displayed continuously, have
the vehicle inspected by any authorized Lexus retailer or Lexus authorized repairer, or any reliablerepairer.
Warning messageDetails/Actions
(Flashes)