check engine LEXUS LX570 2015 Owner's Guide

7584-3. Do-it-yourself maintenance
LX570_OM_OM60L96U_(U) Radiator and condenser
Check the radiator and condenser, and clear any foreign objects.
If any of the above parts are extremely dirty or you are not sure of their
condition, have your vehicle checked by your Lexus dealer. CAUTION■
When the engine is hot
Do not remove the coolant reservoir cap.
The cooling system may be under pressure and may spray hot coolant if the cap is
removed, causing serious injuries, such as burns.
NOTICE■
When adding engine coolant
Coolant is neither plain wate r nor straight antifreeze. Th e correct mixture of water
and antifreeze must be used to provide proper lubrication, corrosion protection
and cooling. Be sure to read the antifreeze or coolant label. ■
If you spill coolant
Be sure to wash it off with water to prevent damage to parts or paint.
CAUTION■
When the engine is hot
Do not touch the radiator or condenser as they may be hot and cause serious inju-
ries, such as burns.

7594-3. Do-it-yourself maintenance
4
Maintenance and care
LX570_OM_OM60L96U_(U) Brake fluid
■ Checking fluid level
The brake fluid level should be
between the “MAX” and “MIN”
lines on the tank.
MAX
MIN
Make sure to check the fluid type and prepare the necessary items.
■ Adding fluid
■ Refilling brake fluid
Turn the “ENGINE STAR T STOP” switch OFF.
Depress the brake pedal more than 40 times.
Remove the reservoir cap by hand . Add brake fluid up to the
“MAX” line.If you do not follow the procedure above, the reservoir may overflow.Fluid type FMVSS No.116 DOT 3 or SAE J1703 brake fluid
Items Clean funnel
■
Brake fluid can absorb moisture from the air
Excess moisture in the fluid can cause a dangerous loss of brak ing efficiency. Use
only newly opened brake fluid. STEP 1
STEP 2
STEP 3

7614-3. Do-it-yourself maintenance
4
Maintenance and care
LX570_OM_OM60L96U_(U) Power steering fluid
■ Fluid level
The fluid level should be within the appropriate range.
Full (when cold)
Add fluid (when cold)
Full (when hot)
Add fluid (when hot)
Hot: Vehicle has been driven arou nd 50 mph (80 km/h) for 20 min-
utes, or slightly longer in fr igid temperatures. (Fluid tempera-
ture, 140  F - 175  F [60  C - 80  C]).
Cold: Engine has not been run for about five hours. (Room tempera-
ture, 50  F - 85  F [10  C - 30  C]).
■ Checking the fluid level
Make sure to check the fluid type and prepare the necessary items.
Clean all dirt off the reservoir.
Remove the cap by turning it counterclockwise.
Wipe the dipstick clean.
Reinstall and remove the reservoir cap again.
Check the fluid level.Fluid type Automatic transmission fluid DEXRON ®
II or III
Items Rag or paper, Clean funnel (only for adding fluid)STEP 1
STEP 2
STEP 3
STEP 4
STEP 5

7694-3. Do-it-yourself maintenance
4
Maintenance and care
LX570_OM_OM60L96U_(U) ■
When to replace your vehicle’s tires
Tires should be replaced if: ●
You have tire damage such as cuts, splits, cracks deep enough to expose the
fabric, and bulges indicating internal damage ●
A tire goes flat repeatedly or cannot be properly repaired due to the size or
location of a cut or other damage
If you are not sure, consul t with your Lexus dealer.■
Replacing tires and wheels
If the ID code of the tire pressure warning valve and transmitter is not registered,
the tire pressure warning sy stem will not work properly. After driving for about 20
minutes, the tire pressure warning light come s on after blinking for 1 minute to indi-
cate a system malfunction. ■
When rotating the tires
Make sure that the “ENGINE START STOP” switch is off. If the tires are rotated
while the “ENGINE START STOP” switch is in IGNITION ON mode, the tire posi-
tion information will not be updated.
If this accidentally occurs, either turn the “ENGINE START STOP” switch to off
and then to IGNITION ON mode, or initia lize the system afte r checking that the
tire pressure is properly adjusted. ■
Tire life
Any tire over 6 years old mu st be checked by a qualified technician even if it has
seldom or never been used or damage is not obvious. ■
If the tread on snow tires wears down below 0.16 in. (4 mm)
The effectiveness of the tire s as snow tires is lost.

7714-3. Do-it-yourself maintenance
4
Maintenance and care
LX570_OM_OM60L96U_(U) ■
Initializing the tire pressure warning system
Initialize the tire pressure warning system with the tire inflation pressure adjusted to
the specified level. ■
If you push the tire pressure warning reset switch accidentally
If initialization is performed, adjust the ti re inflation pressure to the specified level
and initialize the tire pre ssure warning system again.■
The initialization operation ●
Make sure to carry out initialization afte r adjusting the tire inflation pressure.
Also, make sure the tires are cold before carrying out initialization or tire infla-
tion pressure adjustment. ●
If you have accidentally turned the “ENGINE START STOP” switch off during
initialization, it is not necessary to pre ss the reset switch again as initialization
will restart automatically when the “ENGINE START STOP” switch has been
turned to IGNITION ON mode for the next time. ●
If you accidentally press the reset switch when initialization is not necessary,
adjust the tire inflation pressure to th e specified level when the tires are cold,
and conduct initialization again.■
When the initialization of the tire pressure warning system has failed
Initialization can be completed in a few minutes. However, in the following cases,
the settings have not been recorded and the system will not operate properly. If
repeated attempts to record tire inflation pressure se ttings are unsu ccessful, have
the vehicle inspected by your Lexus dealer. ●
When operating the tire pressure warnin g reset switch, the tire pressure warn-
ing light does not blink 3 times and the setting message does not appear on the
multi-information display. ●
After carrying out the initialization proc edure, the tire pressure warning light
blinks for 1 minute then stays on after driving for about 20 minutes.■
Routine tire inflation pressure checks
The tire pressure warning sy stem does not replace rout ine tire inflation pressure
checks. Make sure to check tire inflation pressure as part of your routine of daily
vehicle checks.

7864-3. Do-it-yourself maintenance
LX570_OM_OM60L96U_(U) Checking and replacing fuses If any of the electrical components do not operate, a fuse may have blown.
If this happens, check and re place the fuses as necessary.
Turn the “ENGINE START STOP” switch OFF.
Remove the engine compartment cover 
 P. 752
The fuses are located in the fo llowing places. To check the
fuses, follow the instructions below.
Engine compartm ent (fuse box on the left side)
Push the tab in and lift the lid off.
Engine compartm ent (fuse box on the right side)
Push the tabs in and lift the lid
off.STEP 1
STEP 2
STEP 3

8034-3. Do-it-yourself maintenance
4
Maintenance and care
LX570_OM_OM60L96U_(U) Light bulbs You may replace the following bulb s yourself. The difficulty level of
replacement varies depending on the bulb. If necessary bulb replacement
seems difficult to perform, contact your Lexus dealer.
For more information about replacing ot her light bulbs, contact your Lexus
dealer.
■ Prepare a replacement light bulb
Check the wattage of the light bulb being replaced. (  P. 896)
■ Remove the engine compartment cover
 P. 752
■ Front bulb locations Headlight high beamFront turn signal light

8325-2. Steps to take in an emergency
LX570_OM_OM60L96U_(U) ■
If the malfunction indicator lamp comes on while driving
First check the following: ●
Is the fuel empty?
If it is, fill the fuel tank immediately. ●
Is the fuel tank cap loose?
If it is, tighten it securely.
The malfunction indicator lamp will go off after taking several driving trips.
If the malfunction indicator lamp does not go off even after several trips, contact
your Lexus dealer as soon as possible. ■
If the low speed four-wheel drive indicato r light or the center differential lock
indicator light blinks
Take the specified steps. (  P. 335)
If the brake system warning light or the malfunction indicator light also comes on, or
the low speed four-wheel drive indicator light or the center differential lock indica-
tor light continues to blink after taking th e specified steps, there may be a malfunc-
tion in the engine, the brake system or the four-wheel drive system. In this case, you
may not be able to transfer between “H4” and “L4” modes, and the center differen-
tial lock may not be able to be locked or unlocked. Have the vehicle inspected by
your Lexus dealer, immediately. ■
Front passenger detection sensor and passenger seat belt reminder●
If luggage is placed on the front pass enger seat, the front passenger detection
sensor may cause the warning light to flash, even if a passenger is not sitting in
the seat. ●
If a cushion is placed on the seat, the sensor may not detect a passenger, and
the warning light may not operate properly.

5
When trouble arises
8335-2. Steps to take in an emergency
LX570_OM_OM60L96U_(U) ■
SRS warning light
This warning light system monitors the following: ●
The airbag sensor assembly ●
Front impact sensors ●
Side impact sensors (rear) ●
Side impact sensors (front door) ●
Safing sensor (rear) ●
The driver’s seat belt buckle switch ●
The driver’s seat position sensor ●
Front passenger’s seat belt buckle switch ●
The airbags ●
The interconnecting wiring and power sources ●
The front passenger occupa nt classification system●
“AIR BAG ON” and “AIR BAG OFF” indicator lights●
Seat belt pretensioners and force limiters ●
The “RSCA OFF” indicator light■
Changing the engine oil
Make sure to rese t oil change system■
When the tire pressure warning light comes on
Check the tire inflation pressure and adju st to the appropriate level. Pushing the
tire pressure warning reset sw itch does not turn off the tire pressure warning light.■
The tire pressure warning light may come on due to natural causes
The tire pressure warning light may come on due to natural causes such as natural
air leaks or tire inflation pressure change s caused by temperature. In this case,
adjusting the tire inflation pressure will turn off the warning light (after a few min-
utes).

5
When trouble arises
8355-2. Steps to take in an emergency
LX570_OM_OM60L96U_(U) ■
If the tire pressure warning light freque ntly comes on after blinking for 1 minute
If the tire pressure warning light frequently comes on after blinking for 1 minute
when the “ENGINE START STOP” switch is turned to IGNITION ON mode, have
it checked by Lexus dealer.
CAUTION■
If the tire pressure warning light comes on
Be sure to observe the following precauti ons. Failure to do so could cause loss of
vehicle control and result in death or serious injury. ●
Stop your vehicle in a safe place as soon as possible. Adjust the tire inflation pres-
sure immediately. ●
If the tire pressure warning light come s on even after tire inflation pressure
adjustment, it is probab le that you have a flat tire. Chec k the tires. If the tire is flat,
change to the spare tire and have the flat tire repaired by the nearest Lexus
dealer. ●
Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could
lose control of the steering wheel or the brakes.■
If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.