Lexus GS450h 2018 Owner's Manual / LEXUS 2018 GS450H OWNER'S MANUAL (OM30G62U)

4117-2. Steps to take in an emergency
GS450h_OM_OM30G62U_(U)
7
When trouble arises
(If equipped)
Indicates that your vehicle is nearing the vehicle ahead
(in vehicle-to-vehicle distance control mode)At the same time, will appear on the head-up dis-
play (the image flashes).
A buzzer also sounds.
→ Slow the vehicle by applying the brakes.
(If equipped)
Indicates that the vehicle has deviated from the lane
(while the LKA [Lane-Keeping Assist] system is operat-
ing)
The lane line on the side the vehicle has deviated from
flashes in amber.
At the same time, will appear on the head-up
display (the image flashes).
A buzzer also sounds.
→ Check around the vehicle and back to inside of the
lane lines.
Indicates a malfunctio n in the brake system
A buzzer also sounds.
→ Have the vehicle inspecte d by your Lexus dealer
immediately.
Continuing to drive the vehicle may be dangerous.
Warning messageDetails/Actions
(U.S.A.) (Canada) (Flashes)

4127-2. Steps to take in an emergency
GS450h_OM_OM30G62U_(U)
Indicates a malfunction in the gasoline engine or that the
shift lever is in N for a long period of time
A buzzer also sounds.
→ Release the accelerator pedal and stop the vehicle
in a safe place and shift the shift lever to P.
Indicates that the driver’s door was opened with the shift
position in any position other than P
A buzzer also sounds.
→ Shift the shift position to P.
Indicates a malfunction in the hybrid system
A buzzer also sounds.
→ Immediately stop the vehicle in a safe place and
contact your Lexus dealer.
Indicates that hood or one or more of the doors or trunk
are not fully closed
The system also indicates which hood or doors or
trunk are not fully closed.
If the vehicle reaches a speed of 3 mph (5 km/h),
flashes and a buzzer sounds to indicate that
the hood or door(s) or trunk are not yet fully closed.
→ Make sure that hood or all doors or trunk are
closed.
Warning messageDetails/Actions
(Flashes)
(Flashes)

4137-2. Steps to take in an emergency
GS450h_OM_OM30G62U_(U)
7
When trouble arises
(If equipped)
Indicates a malfunction in the Lexus parking assist
All assist-sensors flash.
A buzzer also sounds.
→ Have the vehicle inspected by your Lexus dealer.
(If equipped)
Indicates that Lexus parking as sist-sensor is dirty or cov-
ered with ice A buzzer also sounds.
→ Clean the sensor.
Indicates an attempt was made to release the parking
brake with a door open or the front passenger’s seat belt
unfastened
A buzzer also sounds.
→ Close all doors and fasten the front passenger’s seat
belt before releasin g the parking brake.
Warning messageDetails/Actions
(Flashes)

4147-2. Steps to take in an emergency
GS450h_OM_OM30G62U_(U)
Indicates that the driver’s door was opened with the shift
position in any position other than PA buzzer also sounds.
→ Shift the shift position to P.
Indicates that the accelera tor pedal is depressed while
the shift lever is in N A buzzer also sounds.
→ Release the accelerator pe dal and shift the shift
position to D, S or R.
Indicates that the accelera tor pedal is depressed while
the shift lever is in N A buzzer also sounds.
→ Release the accelerator pe dal and shift the shift
position to D, S or R.
Warning messageDetails/Actions
(Flashes)
(Flashes)
(Flashes)

4157-2. Steps to take in an emergency
GS450h_OM_OM30G62U_(U)
7
When trouble arises
Indicates that the hybrid battery (traction battery) power
has dropped because a long period of time has elapsed
after shifting the shift lever to NA buzzer also sounds.
→ Restart the hybrid system when starting the vehicle.
Indicates a malfunction in the hybrid system
Depending on the malfunction, troubleshooting meth-
ods may also be displayed.
A buzzer also sounds.
→ Immediately stop the vehicle in a safe place and
contact your Lexus dealer.
Indicates that the traction battery is low
A buzzer also sounds.
→ When stopping the vehicle for a long period of time,
shift the shift lever to P. The battery cannot be
charged with the shift lever in N.
Indicates a malfunction in th e EPS (Electric Power Steer-
ing) system A buzzer also sounds.
→ Have the vehicle inspected by your Lexus dealer.
Warning messageDetails/Actions
(Flashes)
(Flashes)

4167-2. Steps to take in an emergency
GS450h_OM_OM30G62U_(U)
Indicates that the vehicle is being driven at 3 mph (5 km/h)
or more with the parking brake still engaged.A buzzer also sounds.
→ Release the parking brake.
Indicates that the parking brake is engaged with the shift
position not in P
A buzzer also sounds.
→ Change the shift position to P.
Indicates a malfunction in the brake hold system
A buzzer also sounds.
→ Depress the brake pedal to turn off the brake hold
system.
Have the vehicle inspecte d by your Lexus dealer
immediately.
Indicates that the brake hold system is turned on while on
a steep slope A buzzer also sounds.
→ Do not use only the brake hold system on steep
slopes. Be sure to also depress the brake pedal.
Indicates a malfunction in the parking brake system
A buzzer also sounds.
→ Press the parking brake switch. If the warning mes-
sage is still displayed, have the vehicle inspected by
your Lexus dealer.
Warning messageDetails/Actions
(Flashes)
(Flashes)
(Flashes)
(U.S.A.) (Flashes)
(Canada) (Flashes)

4177-2. Steps to take in an emergency
GS450h_OM_OM30G62U_(U)
7
When trouble arises
Indicates an attempt was made to release the parking
brake without depressing the brake pedalA buzzer also sounds.
→ Release the parking brake while depressing the
brake pedal.
Indicates that the shift position was changed and Drive-
Start Control was operated while depressing the accel-
erator pedal A buzzer also sounds.
→ Momentarily release the accelerator pedal.
Indicates an attempt was made to shift to 1st gear with
the shift position in S while on a slippery surface
The vehicle will not shift down from 2nd gear.
A buzzer also sounds.
→ Drive the vehicle in 2nd gear or higher.
(If equipped)
Indicates that the LKA (Lane- Keeping Assist) system has
determined that the driver does not have their hands on
the steering wheel while the steering control function is
on If the driver operates the steering wheel only a small
amount, the system may be unable to detect the steer-
ing wheel operations and this warning may be dis-
played.
A buzzer also sounds.
→ Firmly hold the steering wheel.
Warning messageDetails/Actions
(Flashes)

4187-2. Steps to take in an emergency
GS450h_OM_OM30G62U_(U)
Indicates that the parking brake system is overheatingA buzzer also sounds.
→ Do not use the parking brake until the message dis-
appears.
Indicates an engine malfunction
A buzzer also sounds.
→ Have the vehicle inspected by your Lexus dealer.
Indicates an engine malfunction
A buzzer also sounds.
→ Have the vehicle inspected by your Lexus dealer.
Indicates a malfunction in:
• The SRS airbag system;
• The front passenger occupa nt classification system;
or,
• The seat belt pretensioner system
A buzzer also sounds.
→ Have the vehicle inspected by your Lexus dealer.
Warning messageDetails/Actions
(U.S.A.) (Canada)
(U.S.A.) (Canada)
(U.S.A.) (Canada)

4197-2. Steps to take in an emergency
GS450h_OM_OM30G62U_(U)
7
When trouble arises
Indicates a malfunction in:• The ABS; or
• The brake assist system
A buzzer also sounds.
→ Immediately stop the vehicle in a safe place and
contact your Lexus dealer. Continuing to drive the
vehicle may be dangerous.
Indicates that the engine coolant temperature is too high
A buzzer also sounds.
→ P. 461
Indicates a malfunction in the vehicle’s charging system.
→Immediately stop the vehicle in a safe place and
contact your Lexus dealer. Continuing to drive the
vehicle may be dangerous.
Warning messageDetails/Actions
(U.S.A.) (Canada)

4207-2. Steps to take in an emergency
GS450h_OM_OM30G62U_(U)
(If equipped)
Indicates that the radar sensor is dirty or covered with
iceA buzzer also sounds.
→ Clean the sensor.
(If equipped)
Indicates that the dynamic radar cruise control system
cannot be used temporarily due to bad weather
A buzzer also sounds.
→ Use the radar cruise control system when it
becomes available again.
(If equipped)
Indicates that the radar cruise control system brake con-
trol function is temporarily unavailable
A buzzer also sounds.
→ Depress the brake.
Indicates a malfunction in the smart access system with
push-button start
A buzzer also sounds.
→ Have the vehicle inspected by your Lexus dealer.
Warning messageDetails/Actions
(Flashes)