engine overheat LEXUS LS460L 2016 Owners Manual

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LS460/LS460L_GE (OM50G06E)
6-1. Maintenance and care
Cleaning and protecting
the vehicle exterior.................. 510
Cleaning and protecting
the vehicle interior ................... 514
6-2. Maintenance
Maintenance
requirements.............................. 517
Scheduled maintenance ........ 520
6-3. Do-it-yourself maintenance
Do-it-yourself service
precautions ................................533
Hood ...............................................536
Positioning a floor jack............. 537
Engine compartment................539
Tires .................................................556
Tire inflation pressure.............. 568
Wheels............................................570
Air conditioning filter................ 572
Electronic key battery ..............575
Checking and
replacing fuses ......................... 579
Light bulbs .................................... 584
7-1. Essential information
Emergency flashers ..................594
If your vehicle has to be
stopped in an
emergency.................................595
7-2. Steps to take in an
emergency
If your vehicle needs to
be towed .....................................596
If you think something is
wrong .......................................... 603
Fuel pump shut off system ......604
If a warning light turns on
or a warning
buzzer sounds ......................... 605
If a warning message is
displayed...................................... 614
If you have a flat tire.................... 618
If the engine will not start ........ 627
If the parking brake
cannot be released................. 629
If the electronic key does
not operate properly .............. 631
If the vehicle battery is
discharged .................................636
If your vehicle overheats .......... 641
If the vehicle becomes
stuck..............................................645
6Maintenance and care7When trouble arises

17Pictorial index
LS460/LS460L_GE (OM50G06E)
Windshield wipers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 300
Precautions against winter season . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 399
To prevent freezing (windshield wiper de-icer)*. . . . . . . . . . . . . . . . . . . .P. 446
Precautions against car wash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 512
Fuel filler door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P . 305
Refueling method. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 305
Fuel type/fuel tank capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 652
Tires. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 556
Tire size/inflation pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 660, 662
Winter tires/tire chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 399
Checking/rotation/tire pressure warning system* . . . . . . . . . . . . . . . . P. 556
Coping with flat tires. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 618
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 536
Opening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 536
Engine compartment cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 541
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 653
Coping with overheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 641
Warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 614
Headlights/front position lights/daytime running lights . . . . . . . . . . .P. 285
Front fog lights/rear fog lights*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 298
Turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 2 78
Tail lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 285
Stop lights
Hill-start assist control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 360
License plate lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 285
Back-up lights
Shifting the shift lever to R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 264, 269
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5
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Light bulbs of the exterior lights for driving
(Replacing method: P. 584, Watts: P. 664)
*: If equipped
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1282. Instrument cluster
LS460/LS460L_GE (OM50G06E)
■Outside temperature display
In the following situations, the correct outside temperature may not be displayed, or
the display may take longer than normal to change.
●When stopped, or driving at low speeds (less than 20 km/h [12 mph])
●When the outside temperature has changed suddenly (at the entrance/exit of a
garage, tunnel, etc.)
■Customization
Settings (e.g. on/off operation of ECO lamp) can be changed.
(Customizable features P. 668)
NOTICE
■To prevent damage to the engine and its components
●Do not let the indicator needle of the tachometer enter the red zone, which indi-
cates the maximum engine speed.
●The engine may be overheating if the engine coolant temperature gauge is in the
red zone (H). In this case, immediately stop the vehicle in a safe place, and check
the engine after it has cooled completely. ( P. 641)

2504-1. Before driving
LS460/LS460L_GE (OM50G06E)
CAUTION
Observe the following precautions.
Failure to do so may result in death or serious injury.
■When driving the vehicle
●During normal driving, do not turn of f the engine. Turning the engine off while
driving will not cause loss of steering or braking control, however, power assist to
the steering will be lost. This will make it more difficult to steer smoothly, so you
should pull over and stop the vehicle as soon as it is safe to do so.
In the event of an emergency, such as if it becomes impossible to stop the vehicle
in the normal way: P. 595
●Use engine braking (downshift) to maintain a safe speed when driving down a
steep hill.
Using the brakes continuously may cause the brakes to overheat and lose effec-
tiveness. ( P. 264, 269)
●Do not adjust the positions of the steering wheel, the seat, or the inside or outside
rear view mirrors while driving.
Doing so may result in a loss of vehicle control.
●Always check that all passengers’ arms, heads or other parts of their body are not
outside the vehicle.

2524-1. Before driving
LS460/LS460L_GE (OM50G06E)
CAUTION
Observe the following precautions.
Failure to do so may result in death or serious injury.
■If a brake pad wear warning message is displayed
Have your Lexus dealer check and replace the brake pads as soon as possible.
The rotor damage can result if the pads are not replaced when needed.
Moderate levels of the brake pad and disc wear allow enhanced braking power. As
a result, the discs may wear more quickly than conventional brake discs. Therefore,
when replacing the brake pads, Lexus recommends that you also have the thick-
ness of the discs measured.
It is dangerous to drive the vehicle when the wear limits of the brake pads and/or
those of the brake discs are exceeded.
■When the vehicle is stopped
●Do not race the engine.
If the vehicle is in any gear other than P or N, the vehicle may accelerate suddenly
and unexpectedly, causing an accident.
●In order to prevent accidents due to the vehicle rolling away, always keep
depressing the brake pedal while the engine is running, and apply the parking
brake as necessary.
●If the vehicle is stopped on an incline, in order to prevent accidents caused by the
vehicle rolling forward or backward, always depress the brake pedal and securely
apply the parking brake as needed.
●Avoid revving or racing the engine.
Running the engine at high speed while the vehicle is stopped may cause the
exhaust system to overheat, which could result in a fire if combustible material is
nearby.

2544-1. Before driving
LS460/LS460L_GE (OM50G06E)
CAUTION
Observe the following precautions.
Failure to do so may result in death or serious injury.
■When taking a nap in the vehicle
Always turn the engine off. Otherwise, if you accidentally move the shift lever or
depress the accelerator pedal, this could cause an accident or fire due to engine
overheating. Additionally, if the vehicle is parked in a poorly ventilated area,
exhaust gases may collect and enter the vehicle, leading to death or a serious
health hazard.
■When braking
●When the brakes are wet, drive more cautiously.
Braking distance increases when the brakes are wet, and this may cause one side
of the vehicle to brake differently than the other side. Also, the parking brake may
not securely hold the vehicle.
●If the electronically controlled brake system does not operate, do not follow other
vehicles closely and avoid hills or sharp turns that require braking.
In this case, braking is still possible, but the brake pedal should be depressed
more firmly than usual. Also, the braking distance will increase. Have your brakes
fixed immediately.
●The brake system consists of 2 or more individual hydraulic systems; if one of the
systems fails, the other(s) will still operate. In this case, the brake pedal should be
depressed more firmly than usual and the braking distance will increase. Have
your brakes fixed immediately.
■If the vehicle becomes stuck (AWD models)
Do not spin the wheels excessively when any of the tires is up in the air, or the vehi-
cle is stuck in sand, mud, etc. This may damage the driveline components or propel
the vehicle forward or backward, causing an accident.

2614-2. Driving procedures
4
Driving
LS460/LS460L_GE (OM50G06E)
■Auto power off function
If the vehicle is left in ACCESSORY mode for more than 20 minutes with the shift
lever in P, the engine switch will automatically turn off.
■Electronic key battery depletion
 P. 166
■Conditions affecting operation
 P. 163
■Notes for the entry function
 P. 164
■If the engine does not start
The engine immobilizer system may not have been deactivated. ( P. 104)
Contact your Lexus dealer.
■Steering lock
After turning the engine switch off and opening and closing the doors, the steering
wheel will be locked due to the steering lock function. Operating the engine switch
again automatically cancels the steering lock.
■When the steering lock cannot be released
■Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, the motor may be suspended if
the engine is turned on and off repeatedly in a short period of time. In this case,
refrain from operating the engine. After about 10 seconds, the steering lock motor
will resume functioning.
The green indicator light on the engine switch
will flash and a message will be shown on the
multi-information display. Press the engine
switch again while turning the steering wheel
left and right.

2804-2. Driving procedures
LS460/LS460L_GE (OM50G06E)
The parking brake is set or released automatically according to shift lever
operation.
Turns automatic mode on/off
When automatic mode is turned on,
the indicator on the switch comes
on and it operates in the following
manner:
●When the shift lever is moved into
P, the parking brake will be set.
●When the shift lever is moved out
of P, the parking brake will be
released.
Operate the shift lever with the brake
pedal depressed.
■Parking the vehicle
 P. 246
■Parking brake operation
●When the engine switch is not in IGNITION ON mode, the parking brake cannot
be released using the parking brake switch.
●When the engine switch is not in IGNITION ON mode, automatic mode (auto-
matic brake setting and releasing) is not available.
●If the parking brake is operated repeatedly over a short period of time, the system
may restrict operation to prevent overheating. If this happens, refrain from operat-
ing the parking brake. Normal operation will return after about 1 minute.
■Parking brake operation sound
When the parking brake operates, a motor sound (whirring sound) may be heard.
This does not indicate a malfunction.
Automatic mode

3044-3. Operating the lights and wipers
LS460/LS460L_GE (OM50G06E)
Press the switch to clean the head-
lights.
■The headlight cleaners can be operated when
The engine switch is in IGNITION ON mode and the headlight switch is turned on.
■Windshield washer linked operation
When the windshield washer is operated with the engine switch in IGNITION ON
mode and the headlights on, the headlight cleaners will operate once. ( P. 300)
Headlight cleaner switch
Washer fluid can be sprayed on the headlights.
NOTICE
■When the washer fluid tank is empty
Do not press the switch continually as the washer fluid pump may overheat.

3654-5. Using the driving support systems
4
Driving
LS460/LS460L_GE (OM50G06E)
■Reactivation of the TRC/VSC systems
Even after the TRC/VSC systems have been turned off, turning the engine off and
then on again will automatically reactivate the TRC/VSC systems.
■Reactivation of the TRC system linked to vehicle speed
When only the TRC system is turned off, the TRC system will turn on when vehicle
speed increases. However, when both TRC and VSC systems are turned off, the sys-
tems will not turn on even when vehicle speed increases.
■Reduced effectiveness of the EPS system
The effectiveness of the EPS system is reduced to prevent the system from overheat-
ing when there is frequent steering input over an extended period of time. The steer-
ing wheel may feel heavy as a result.* Should this occur, refrain from excessive
steering input or stop the vehicle and turn the engine off. The EPS system should
return to normal within 10 minutes.
*: If the LKA (Lane-Keeping Assist) system cannot operate in this case, a warning
message will be shown on the multi-information display.
■Operating conditions of emergency brake signal
When the following three conditions are met, the emergency brake signal will oper-
ate:
●The emergency flashers are off.
●Actual vehicle speed is over 55 km/h (35 mph).
●The brake pedal is depressed in a manner that cause the system to judge from the
vehicle deceleration that this is a sudden braking operation.
■Automatic system cancelation of emergency brake signal (if equipped)
The emergency brake signal will turn o ff in any of the following situations:
●The emergency flashers are turned on.
●The brake pedal is released.
●The system judges from the vehicle deceleration that is not a sudden braking oper-
ation.