2017 Lexus GS450h stop start

5377-2. Steps to take in an emergency
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When trouble arises
GS450h_300h_OM_OM30F92E_(EE)
Start the hybrid system and turn the air conditioning system on to check
that the radiator cooling fans operate and to check for coolant leaks from
the radiator or hoses.
The fans operate when the air conditioning system is turned on immediately after a
cold start. Confirm that the fans are op erating by checking the fan sound and air flow. If it is difficult to check these, tu rn the air conditioning system on and off repeatedly. (The fans may not operate in freezing temperatures.)
If the fans are not operating:
Stop the hybrid system immediately and contact any authorized Lexus
retailer or Lexus authorized repairer, or any reliable repairer.
If the fans are operating:
Have the vehicle inspected at the nearest any authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer.
■If “Hybrid System Overheated Reduced Output Power” is shown on the
multi-information display
Stop the vehicle in a safe place.
Stop the hybrid system and carefully lift the hood.
After the hybrid system has cooled down, inspect the hoses and radiator
core (radiator) for any leaks.
Radiator
Cooling fans
If a large amount of coolant leaks, immediately contact any autho-
rized Lexus retailer or Lexus authorized repairer, or any reli-able repairer.
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5387-2. Steps to take in an emergency
GS450h_300h_OM_OM30F92E_(EE)
The coolant level is satisfactory if it is between the “FULL”/“F” and “LOW”/
“L” lines on the reservoir.
Reservoir
“FULL”/“F”
“LOW”/“L”
Add coolant if necessary.
Water can be used in an emergency if po wer control unit coolant is unavailable.
Start the hybrid system and check for the multi-information display.
If the message does not disappear: Stop the hybrid system and contact any authorized Lexus retailer or Lexus autho-
rized repairer, or any reliable repairer.
If the message is not displayed: Have the vehicle inspected at the nearest any authorized Lexus retailer or Lexus
authorized repairer, or any reliable repairer.
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GS450hGS300h
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GS450hGS300h
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5407-2. Steps to take in an emergency
GS450h_300h_OM_OM30F92E_(EE)
WARNING
■When inspecting under the hood of your vehicle
Observe the following precautions. Failure to do so may result in serious injury such as burns.
●If steam is seen coming from under the h ood, do not open the hood until the steam has subsided. The engine compartment may be very hot.
●After the hybrid system has been turned off, check that the indicator on the power
switch and the “READY” indicator are off. When the hybrid system is operating, the gasoline engine may automatically start, orthe cooling fan may suddenly operate even if the gasoline engine stops. Do not touch
or approach rotating parts such as the fan, which may lead to fingers or clothing (especially a tie, a scarf or a muffler) getting caught, resulting in serious injury.
●Do not loosen the coolant inlet cap or thecoolant reservoir caps while the hybrid sys-tem and radiator are hot.
High temperature steam or coolant could spray out.
GS450h
GS300h

5427-2. Steps to take in an emergency
GS450h_300h_OM_OM30F92E_(EE)
If the vehicle becomes stuck
Stop the hybrid system. Set the parking brake and shift the shift lever to P.
Remove the mud, snow or sand from around the rear wheels.
Place wood, stones or some other materi al under the rear wheels to help pro-
vide traction.
Restart the hybrid system.
Shift the shift lever to D or R and rele ase the parking brake. Then, while exer-
cising caution, depress the accelerator pedal.
■When it is difficult to free the vehicle
Carry out the following procedures if the tires spin or the vehicle becomes
stuck in mud, dirt or snow:
Press to turn off TRC. ( P. 326)
WARNING
■When attempting to free a stuck vehicle
If you choose to push the vehicle back and forth to free it, make sure the surrounding area is clear to avoid striking other vehi cles, objects or people. The vehicle may also
lunge forward or lunge back suddenly as it becomes free. Use extreme caution.
■When shifting the shift lever
Be careful not to shift the shift lever with the accelerator pedal depressed.
This may lead to unexpected rapid acceleration of the vehicle that may cause an acci- dent resulting in death or serious injury.
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5748-2. Customization
GS450h_300h_OM_OM30F92E_(EE)
■Rear sunshade* ( P. 380)
*: If equipped
■Vehicle customization
●When the speed linked door locking function and shift position linked door locking function are both on, the door lock operates as follows.
• When shifting the shift lever to any position other than P, all the doors will be locked. • If the vehicle is started with all the door s locked, the speed linked door locking func- tion would not operate.
• If the vehicle is started with any door un locked, the speed linked door locking func- tion will operate.
●When the entry function is off, the select ing doors to unlock cannot be customized.
●When the doors remain closed after unlocking the doors and the automatic door lock function (time elapsed before the automatic door lock function is activated if a door is
not opened after being unlocked) activates, the signals will be generated in accordance with the operation signal (buzzers) and the operation signal (emergency flashers) set-tings.
●Some settings can be changed using a switch or the Remote Touch screen. If a setting ischanged using a switch, the changed setting will not be reflected on the Remote Touchscreen until the power switch is turned off and then to ON mode.
■When customizing using the Remote Touch
Stop the vehicle in a safe place, apply the parking brake, and shift the shift lever to P. Also, to prevent 12-volt battery discharge, leave the hybrid system operating while customiz-
ing the features.
FunctionDefault
setting
Customized
setting
Reverse operationOnOff——O
Time elapsed before the
reverse operation feature acti- vates0.7 seconds
0 second
——O0.9 seconds
1.2 seconds
WARNING
■During customization
As the hybrid system needs to be operating during customization, ensure that the vehi- cle is parked in a place with adequate ventilation. In a closed area such as a garage,
exhaust gases including harmful carbon monoxide (CO) may collect and enter the vehicle. This may lead to death or a serious health hazard.
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579What to do if... (Troubleshooting)
GS450h_300h_OM_OM30F92E_(EE)
●The function to prevent the electronic key from being left inside the trunk will
operate and you can open the trunk as usual. Take the key out from the trunk.
( P. 148)
●Did you press the power switch while firmly depressing the brake pedal?
( P. 217)
●Is the shift lever in P? (P. 219)
●Is the electronic key anywhere detectable inside the vehicle? (P. 153)
●Is the steering wheel unlocked? (P. 219)
●Is the electronic key battery weak or depleted?
In this case, the hybrid system can be started in a temporary way. ( P. 528)
●Is the 12-volt battery discharged? (P. 530)
●Is the power switch in ON mode?
If you cannot release the shift lever by depressing the brake pedal with the
power switch in ON mode ( P. 229)
●It is locked automatically to prevent theft of the vehicle. (P. 219)
The trunk lid is closed with the electronic key left inside
If you think som ething is wrong
The hybrid system does not start
The shift lever cannot be shifted fr om P even if you depress the brake
pedal
The steering wheel cannot be turned after the hybrid system is stopped

580What to do if... (Troubleshooting)
GS450h_300h_OM_OM30F92E_(EE)
●Is the window lock switch pressed?
The power window except for the one at the driver’s seat cannot be operated
if the window lock switch is pressed. ( P. 193)
●The auto power off function will be operated if the vehicle is left in ACCES-
SORY or ON mode (the hybrid system is not operating) for a period of time.
( P. 219)
●The seat belt reminder light is flashing
Are the driver and the front passenger wearing the seat belts? ( P. 462)
●The parking brake indicator is on
Is the parking brake released? ( P. 232)
Depending on the situation, other type s of warning buzzer may also sound.
( P. 460, 466)
●Did anyone inside the vehicle open a door or anything move inside the vehicle
during setting the alarm?
The sensor detects them and the alarm sounds. ( P. 91)
To stop the alarm, turn the power switch to ON mode or start the hybrid system.
●Is the electronic key left inside the vehicle or the moon roof opened (if
equipped)?
Check the message on the multi-information display. ( P. 466)
The windows do not open or close by operating the power window
switches
The power switch is turned off automatically
A warning buzzer sounds during driving
An alarm is activated and th e horn sounds (if equipped)
A warning buzzer sounds when leaving the vehicle
(vehicles with entry function)

586Alphabetical index
GS450h_300h_OM_OM30F92E_(EE)
Dynamic radar cruise control
with full-speed range ....................... 296
Function .................................................. 296
Warning message.............................466
Dynamic Rear Steering (DRS)........ 325
Function .................................................. 325
Warning message.............................466
DVD player*
Eco drive mode ........................................ 311
Electric motor (traction motor) ......... 76
Electric Power Steering (EPS)........ 325
Function .................................................. 325
Warning light .........................................461
Warning message.............................466
Electronic key.......................................... 134
Battery-saving function.................... 155
If the electronic key does not
operate properly ............................ 527
Replacing the battery.......................435
Emergency, in case of
If a warning buzzer sounds ......... 460
If a warning light turns on.............. 460
If a warning message is
displayed ............................................466
If the 12-volt battery is
discharged........................................ 530
If the electronic key does not
operate properly ............................ 527
If the hybrid system will not
start ........................................................ 523
If the parking brake cannot
be released........................................525
If you have a flat tire .............498, 509
If you think something
is wrong .............................................. 459
If your vehicle becomes
stuck ..................................................... 542
If your vehicle has to be
stopped in an emergency ......... 453
If your vehicle needs to
be towed ............................................ 454
If your vehicle overheats................ 535
Emergency brake signal.................... 325
Emergency flashers............................. 452
Emergency tire puncture
repair kit ................................................ 509
Energy monitor ....................................... 126
Engine ....................................................... 548
Accessory mode ................................. 218
Compartment ..................................... 403
Engine switch ........................................ 217
Hood ......................................................... 401
How to start the hybrid
system.................................................... 217
Identification number....................... 548
Ignition switch
(power switch) .................................. 217
Overheating ........................................ 535
Power switch ......................................... 217
Engine compartment cover ............. 405
Engine coolant....................................... 409
Capacity................................................. 552
Checking ............................................... 409
Preparing and checking
before winter.................................... 334
E