2017 LEXUS LS600H stop start

6137-2. Steps to take in an emergency
7
When trouble arises
LS600h/LS600hL_EE(OM50G20E)
Start the hybrid system and turn the air conditioning system on to
check that the radiator cooling fan operates and to check for coolant
leaks from the radiator or hoses.
The fan operates when the air conditioning system is turned on immediately
after a cold start. Confirm that the fan is operating by checking the fan sound
and air flow. If it is difficult to check these, turn the air conditioning system on
and off repeatedly.
(The fan may not operate in freezing temperatures.)
If the fan is not operating:
Stop the hybrid system immediat ely and contact any authorized
Lexus dealer or repairer, or another duly qualified and equipped pro-
fessional.
If the fan is operating:
Have the vehicle inspected at the nearest any authorized Lexus
dealer or repairer, or another duly qualified and equipped profes-
sional.
■If “Hybrid System Overheat” is shown on the multi-information dis-
play
Stop the vehicle in a safe place.
Stop the hybrid system an d carefully lift the hood.
After the hybrid system has
cooled down, inspect the
hoses and radiator core (radia-
tor) for any leaks.
Radiator
Cooling fans
If a large amount of coolant
leaks, immediately contact any
authorized Lexus dealer or
repairer, or anot her duly quali-
fied and equipped professional.
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6147-2. Steps to take in an emergency
LS600h/LS600hL_EE(OM50G20E)
The coolant level is satisfactory
if it is between the “F” and “L”
lines on the reservoir.
Reservoir
“F”
“L”
Add coolant if necessary.
( P. 493)
Water can be used in an emer-
gency if 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 dealer or
repairer, or another duly qualified and equipped professional.
If the message is not displayed:
Have the vehicle inspected at the nearest any authorized Lexus
dealer or repairer, or another duly qualified and equipped profes-
sional.
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6157-2. Steps to take in an emergency
7
When trouble arises
LS600h/LS600hL_EE(OM50G20E)
CAUTION
■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 hood, 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, or the 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 fin-
gers or clothing (especially a tie, a scarf or a muffler) getting caught, resulting in
serious injury.
NOTICE
■When adding engine/power control unit coolant
Add coolant slowly after the hybrid system has cooled down sufficiently. Adding
cool coolant to a hot hybrid system too quickly can cause damage to the hybrid
system.
■To prevent damage to the cooling system
Observe the following precautions:
●Avoid contaminating the coolant with foreign matter (such as sand or dust etc.).
●Do not use any coolant additive.
●Do not loosen the coolant reservoir caps
while the hybrid system and radiator are
hot.
High temperature steam or coolant could
spray out.

6167-2. Steps to take in an emergency
LS600h/LS600hL_EE(OM50G20E)
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 material under the rear wheels to
help provide traction.
Restart the hybrid system.
Shift the shift lever to D or R and release the parking brake. Then, while
exercising caution, depress the accelerator pedal.
■When it is difficult to free the vehicle
If the vehicle becomes stuck
Carry out the following procedures if the tires spin or the vehicle
becomes stuck in mud, dirt or snow:
Press to turn off TRC.
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6468-2. Customization
LS600h/LS600hL_EE(OM50G20E)
■Vehicle customization
●When the smart entry & start system is off, the entry unlock function cannot be cus-
tomized.
●When the doors remain closed after unlocking the doors and the timer activated
automatic door lock function activates, signals will be generated in accordance
with the operational signal (Emergency flashers) function settings.
■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
customizing the features.
CAUTION
■During customization
As the hybrid system needs to be operating during customization, ensure that the
vehicle 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.
NOTICE
■During customization
To prevent 12-volt battery discharge, ensure that the hybrid system is operating
while customizing features.

650What to do if... (Troubleshooting)
LS600h/LS600hL_EE(OM50G20E)
●Did you press the power switch while firmly depressing the
brake pedal? ( P. 247)
●Is the shift lever in P? (P. 247)
●Is the electronic key anywhere detectable inside the vehicle?
( P. 153)
●Is the steering wheel unlocked? (P. 249)
●Is the electronic key battery weak or depleted?
In this case, the hybrid system can be started in a temporary
way. ( P. 605)
●Is the 12-volt battery discharged? (P. 607)
●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. 259)
●It is locked automatically to prevent theft of the vehicle.
( P. 249)
If you think something is wrong
The hybrid system does not start
The shift lever cannot be shifted from P even if you depress the
brake pedal
The steering wheel cannot be turned after the hybrid system is
stopped

652What to do if... (Troubleshooting)
LS600h/LS600hL_EE(OM50G20E)
●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. 103)
*: If the vehicle is equipped with intrusion sensor and tilt sensor.
Do one of the following to stop the alarm:
• Unlock the doors or open the trunk using the entry function or wireless
remote control.
• Start the hybrid system.
●Is the message displayed on the multi-information display?
Check the message on the multi-information display.
( P. 563)
●When a warning light turns on or a warning message is dis-
played, refer to P. 555, 563.
An alarm is activated and th e horn sounds (if equipped)
A warning buzzer sounds when leaving the vehicle
A warning light turns on or a warning message is displayed

659Alphabetical index
LS600h/LS600hL_EE(OM50G20E)
Eco drive mode ..................................... 334
Electric motor (traction motor) .........85
Electric Power Steering (EPS)........339
Function ..................................................339
Warning light ....................................... 557
Electronic key.......................................... 140
If the electronic key does not
operate properly ........................... 603
Replacing the battery....................... 532
Electronically modulated air
suspension ............................................ 336
Emergency brake signal ....................339
Emergency flashers .............................546
Emergency, in case of
If a warning message is
displayed ............................................563
If the 12-volt battery is
discharged.........................................607
If the electronic key does not
operate properly ........................... 603
If the hybrid system will not
start ........................................................ 597
If the parking brake cannot
be released....................................... 599
If the warning buzzer sounds ..... 555
If the warning light turns on ......... 555
If you have a flat tire..............567, 578
If you think something
is wrong .............................................. 554
If your vehicle becomes stuck ...... 616
If your vehicle has to be
stopped in an emergency ......... 547
If your vehicle needs to
be towed ............................................ 548
If your vehicle overheats....................611
Emergency tire puncture
repair kit ................................................ 578
Energy monitor ........................................ 131
Engine
ACCESSORY mode ..................... 248
Compartment ..................................... 492
Engine switch ....................................... 247
Hood ....................................................... 489
How to start the hybrid
system................................................... 247
Identification number......................... 621
If the hybrid system will not
start ....................................................... 597
Ignition switch
(power switch) ................................. 247
Overheating ............................................611
Power switch ........................................ 247
E