2015 LEXUS LX570 engine overheat

TABLE OF CONTENTS Index
6
LX570_OM_OM60L96U_(U) 4-1. Maintenance and care
Cleaning and protecting the
vehicle exterior .......................... 734
Cleaning and protecting the
vehicle interior............................ 737
4-2. Maintenance
Maintenance
requirements............................... 740
General maintenance ................ 743
Emission inspection and
maintenance (I/M)
programs ...................................... 746
4-3. Do-it-yourself maintenance
Do-it-yourself service
precautions .................................. 747
Hood.................................................. 750
Engine compartment................... 751
Tires ................................................... 766
Tire inflation pressure ................. 775
Wheels.............................................. 779
Air conditioning filter ................... 781
Electronic key battery ................ 784
Checking and
replacing fuses ........................... 786
Light bulbs ...................................... 803 5-1. Essential information
Emergency flashers...................... 816
If your vehicle needs to be
towed............................................... 817
If you think something is
wrong ............................................. 824
Fuel pump shut off system ....... 825
5-2. Steps to take in an emergency
If a warning light turns on or a
warning buzzer sounds... ...... 826
If a warning message is
displayed ....................................... 837
If you have a flat tire.................... 854
If the engine will not start ......... 868
If the shift lever cannot be
shifted from “P” ......................... 870
If you lose your keys ..................... 871
If the electronic key does not
operate properly ....................... 872
If the battery is discharged ....... 875
If your vehicle overheats .......... 878
If the vehicle becomes
stuck................................................. 881
If your vehicle has to
be stopped in an
emergency .................................. 8834
Maintenance and care 5
When trouble arises

1702-1. Driving procedures
LX570_OM_OM60L96U_(U) CAUTION ●
Do not drive the vehicle over or stop the vehicle near flammable materials.
The exhaust system and exhaust gases can be extremely hot. This may cause a
fire if there is any flammable material nearby. ●
Do not let the vehicle roll backwards while the shift lever is in a driving position, or
roll forward while the shift lever is in “R”.
Doing so may cause the engine to stall or lead to poor brake and steering perfor-
mance, resulting in an accident or damage to the vehicle. ●
If the smell of exhaust is noticed inside the vehicle, open the windows and check
that the back door is closed.
Large amounts of exhaust in the vehicle can cause driver drowsiness and an acci-
dent, resulting in death or a serious heal th hazard. Have the vehicle inspected by
your Lexus dealer immediately. ●
Do not shift the shift lever to “P” while the vehicle is moving.
Doing so can damage the transmission and may result in a loss of vehicle control.●
Do not shift the shift lever to “R” while the vehicle is moving forward.
Doing so can damage the transmission and may result in a loss of vehicle control.●
Do not shift the shift lever to “D” while the vehicle is moving backward.
Doing so can damage the transmission and may result in a loss of vehicle control.●
Moving the shift lever to “N” while the vehicle is moving will disengage the engine
from the transmission. Engine braking is not available when “N” is selected. ●
During normal driving, do not turn off the engine. Turning the engine off while
driving will not cause loss of steering or braking control, but the power assist to
these systems will be lost. This will make it more difficult to steer and brake, so
you should pull over and stop the vehicl e as soon as it is safe to do so.
However, in the event of an emergency, such as if it becomes impossible to stop
the vehicle in the normal way:  P. 883●
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. 182)

1722-1. Driving procedures
LX570_OM_OM60L96U_(U) CAUTION■
When shifting the shift lever
Be careful not to shift th e shift lever with the acc elerator pedal depressed.
This may lead to unexpected rapid acceleration of the vehicle that may cause an
accident and result in death or serious injury. ■
If you hear a squealing or scraping no ise (brake pad wear limit indicators)
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.
It is dangerous to drive the vehicle when the wear limits of the brake pads and/or
that 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 sud-
denly and unexpectedly, and may cause an accident. ●
Do not leave the vehicle with the engine running for a long time.
If such a situation cannot be avoided, park the vehicle in an open space and
check that exhaust fumes do no t enter the vehicle interior.●
In order to prevent accidents due to the vehicle rolling away, always keep
depressing the brake pedal while the engi ne 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.

1742-1. Driving procedures
LX570_OM_OM60L96U_(U) CAUTION■
Exhaust gases
Exhaust gases include harmful carbon monoxide (CO) that is colorless and odor-
less. Inhaling exhaust gases may lead to death or a serious health hazard.●
If the vehicle is in a poorly ventilated ar ea, stop the engine. In a closed area, such
as a garage, exhaust gases may collect and enter the vehicle. This may lead to
death or a serious health hazard. ●
The exhaust should be checked occasionally. If there is a hole or crack caused by
corrosion, damage to a joint or abnormal ex haust noise, be sure to have the vehi-
cle inspected and repaired by your Lexus dealer. Failure to do so may allow
exhaust gases to enter the vehicle, result ing in death or a serious health hazard.■
When taking a nap in the vehicle
Always turn the engine off.
Otherwise, you may accidentally move the shift lever or depress the accelerator
pedal, which could cause an accident or fire due to abnormal 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 the vehicle ●
When the brakes are wet, drive more cautiously.
Braking distance increases when the brakes are wet, and 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 power brake assist function does not operate, do not follow other vehicles
closely and avoid hills or shar p turns that require braking.
In this case, braking is still possible, but the brake pedal should be depressed
more firmly than usual. Also, th e braking distance will increase.
Have your brakes fixed immediately. ●
Do not pump the brake peda l if the engine stalls.
Each push on the pedal uses up the reserve for the power-assisted brakes. ●
The brake system consists of 2 individual hydraulic systems: If one of the systems
fails, the other 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.

1952-2. Instrument cluster
2
When driving
LX570_OM_OM60L96U_(U) ■
The meters and display illuminate when
The “ENGINE START STOP” switch is in IGNITION ON mode. ■
The brightness of the instrument panel lights
When the tail lights are turned on, the mete r’s brightness will be reduced slightly
unless the meter brightness level adjust ment is set to the brightest setting.
If the tail lights are turned on when th e surroundings are dark, the meter’s bright-
ness will be reduced slightly. However, wh en the surroundings are bright, such as
during the daytime, the meter’s brightness wi ll not be reduced even if the tail lights
are turned on.
NOTICE■
To prevent damage to the engine and its components ●
Do not let the indicator needle of the ta chometer enter the red zone, which indi-
cates the maximum engine speed. ●
The engine may be overheating if the engi ne 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. 878)■
Voltmeter
When the voltmeter indicates 19 V or higher or 9 V or lower while the engine is
running, there may be a battery or chargi ng system malfunction. Have the vehicle
inspected at your Lexus dealer. ■
Engine oil pressure gauge
When the value of the engine oil pressure gauge drops while the engine is running,
stop the vehicle in a safe place immediately and check the amount of engine oil.
(  P. 753)
When the oil pressure drops even though the engine oil amount has not decreased,
or if the oil pressure does not increase when engine oil is added, contact your Lexus
dealer, as there may be a problem with the lubrication system.

2302-3. Operating the lights and wipers
LX570_OM_OM60L96U_(U) ■
The rear window wiper and washer can be operated when
The “ENGINE START STOP” switch is in IGNITION ON mode. ■
Dripping prevention wiper sweep
After washing and wiping operation seve ral times, the wipers operate one more
time after a short delay to prevent dripping. ■
Effect of vehicle and shift position on wiper operation
Type A ●
With selected, wiper operation will be switched from low speed to inter-
mittent wiper operation only the vehicle is stationary. ●
With or selected, the rear window wiper sweeps once when you
shift the shift lever to “R” while windshie ld wipers operating or with 17 seconds
from their deactivation.
Type B ●
With selected, wiper operation will be switched from low speed to inter-
mittent wiper operation only the vehicle is stationary. ●
With or selected, the rear window wiper sweeps once when you
shift the shift lever to “R” while windshie ld wipers operating or with 17 seconds
from their deactivation.■
Customization
Settings (e.g. drip prevention function) can be changed.
(Customizable features  P. 912)
NOTICE■
When the washer fluid tank is empty
Do not operate the switch continually as the washer fluid pump may overheat.

2312-3. Operating the lights and wipers
2
When driving
LX570_OM_OM60L96U_(U) Headlight cleaner switch 
 : If equipped■
The headlight cleaner can be operated when
The “ENGINE START STOP” switch is in IGNITION ON mode and the headlight
switch is turned on.
NOTICE■
When the washer fluid tank is empty
Do not use this function when the washer fluid tank is empty. This may cause the
washer fluid pump to overheat.Washer fluid can be sprayed on the headlights.
Press the switch to clean the
headlights.

3422-4. Using other driving systems
LX570_OM_OM60L96U_(U) ■
Function limitations
Crawl Control ●
In the following situations, brake control can be used to drive downhill at a con-
stant speed. However, engine control is not available when driving uphill at a
constant speed.
• When switched to second start mode. ●
In the following situation, engine contro l and brake control will stop temporarily.
In this event, the Crawl Control indicator will flash.
• When the vehicle speed exceeds approximately 15 mph (25 km/h).
Turn Assist function
In the following situations, the Turn Assist function will stop temporarily. In this
event, the Turn Assist indicator will flash. ●
When the vehicle speed exceeds approximately 6 mph (10 km/h). ●
When the shift lever is moved to “R”.■
When the Crawl Control system is operated continuously ●
If Crawl Control is used continuously for a long time, the buzzer will sound, a
malfunction notification will be displaye d on the multi-information display, the
Crawl Control indicator will go off, and Crawl Control will be temporarily inop-
erable as a result of the brake system overheating. In this event, stop the vehicle
immediately in a safe place, and allow th e brake system to cool down sufficiently
until the “TRAC OFF” on the multi-information display goes off. (In the mean-
time, normal driving is possible.) ●
If Crawl Control is used continuously for a long time, the buzzer will sound, the
system will be temporarily canceled, and a malfunction notification will be dis-
played on the multi-informat ion display as a result of the automatic transmission
system overheating. Stop the vehicle in a safe place until the display goes off.