check engine LEXUS LX570 2016 Service Manual

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LX570_OM_OM60N01U_(U)6-3. Do-it-yourself maintenance
The coolant level is satisfactory if it is
between the “F” and “L” lines on the reser-
voir when the engine is cold.
Reservoir cap
“F”
“L”
If the level is on or below the “L” line, add
coolant up to the “F” line.
■Coolant selection
Only use “Toyota Super Long Life Coolant” or a similar high quality ethylene glycol-
based non-silicate, non-amine, non-nitrite, and non-borate coolant with long-life hybrid
organic acid technology.
U.S.A.: “Toyota Super Long Life Coolant” is a mixture of 50 % coolant and 50 % deion-
ized water. (Minimum temperature: -31 F [-35 C])
Canada: “Toyota Super Long Life Coolant” is a mixture of 55 % coolant and 45 % deion-
ized water. (Minimum temperature: -44 F [-42C])
For more details about engine coolant, contact your Lexus dealer.
■If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine coolant reservoir caps, drain cock and water
pump. If you cannot find a leak, have your Le xus dealer test the cap and check for leaks in
the cooling system.
Engine coolant
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WA R N I N G
■When the engine is hot
Do not remove the radiator cap, or 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.

LX570_OM_OM60N01U_(U)
4796-3. Do-it-yourself maintenance
6
Maintenance and care
Check the radiator and condenser and clear any foreign objects.
If either of the above parts is extremely dirty or you are not sure of their condi-
tion, have your vehicle checked by your Lexus dealer.
■Checking fluid level
The brake fluid level should be
between the “MAX” and “MIN” lines
on the tank.
NOTICE
■When adding coolant
Coolant is neither plain water nor straight antifreeze. The correct mixture of water and
antifreeze must be used to provide proper lubrication, corrosion protection and cool-
ing. Be sure to read the antifreeze or coolant label.
■If you spill coolant
Be sure to wash it off with water to pr event it from damage to parts or paint.
Radiator and condenser
WA R N I N G
■When the engine is hot
Do not touch the radiator or condenser as they may be hot and cause serious injuries,
such as burns.
Brake fluid

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LX570_OM_OM60N01U_(U)6-3. Do-it-yourself maintenance
■Adding fluid
Make sure to check the fluid type and prepare the necessary item.
■Refilling brake fluid
Turn the engine 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.
■Brake fluid can absorb moisture from the air
Excess moisture in the fluid can cause a dangerous loss of braking efficiency. Use only
newly opened brake fluid.
Fluid typeFMVSS No.116 DOT 3 or SAE J1703 brake fluid
ItemsClean funnel
WA R N I N G
■When filling the reservoir
Take care because brake fluid can harm yo ur hands or eyes and damage painted sur-
faces. If fluid gets on your eyes, flush the affected area with clean water immediately. If
you still experience discomfort, see a doctor.
NOTICE
■If the fluid level is low or high
It is normal for the brake fluid level to go down slightly as the brake pads wear or when
the fluid level in the accumulator is high. If the reservoir needs frequent refilling, it may
indicate a serious problem.
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LX570_OM_OM60N01U_(U)
4816-3. Do-it-yourself maintenance
6
Maintenance and care
■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: The vehicles has been driven around 50 mph (80 km/h) for 20 min- utes, or slightly longer in frigid temperatures.
(Fluid temperature, 140 F - 175 F [60 C - 80 C]).
Cold: The engine has not been run for about 5 hours. (Room temperature, 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 turnin g it counterclockwise.
Wipe the dipstick clean.
Reinstall the cap and remove it again.
Check the fluid level.
Power steering fluid
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Fluid typeAutomatic transmission fluid DEXRON® II or III
ItemsRag or paper, clean funnel (only for adding fluid)
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LX570_OM_OM60N01U_(U)6-3. Do-it-yourself maintenance
6
Maintenance and care
Checking and replacing fuses
Turn the engine switch off.
Open the fuse box cover.
Passenger’s side instrument panel
Remove the cover.
Remove the lid.
If any of the electrical components do not operate, a fuse may have blown. If
this happens, check and replace the fuses as necessary.
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Engine compartmentDriver’s side instrument panel
Push the tab in and lift the lid off. Remove the lid.

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LX570_OM_OM60N01U_(U)6-3. Do-it-yourself maintenance
Light bulbs
Check the wattage of the light bulb being replaced. (
P. 5 7 0 )
 P. 4 74
Back-up light
You may replace the following bulbs your self. The difficulty level of replace-
ment varies depending on the bulb. If necessary bulb replacement seems diffi-
cult to perform, contact your Lexus dealer.
For more information about replacing other light bulbs, contact your Lexus
dealer.
Preparing for light bulb replacement
Removing the engine compartment covers
Bulb locations
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5287-2. Steps to take in an emergency
LX570_OM_OM60N01U_(U)
■SRS warning light
This warning light system monitors the airbag sensor assembly, front impact sensors, side
impact sensors (rear), side imp act sensors (front door), safing sensor (rear), driver’s seat
belt buckle switch, driver’s seat position sens or, front passenger’s seat belt buckle switch,
airbags, interconnecting wiring and power sources, front passenger occupant classifica-
tion system, “AIR BAG ON” and “AIR BAG OFF” indicator lights, seat belt pretensioners
and force limiters, “RSCA OFF” indicator light. ( P. 3 8 )
■Front passenger detection sensor, seat belt reminder and warning buzzer
●If luggage is placed on the front passenger seat, the front passenger detection sensor
may cause the warning light to flash and the warning buzzer to sound even if a passen-
ger is not sittin g in the seat.
●If a cushion is placed on th e seat, the sensor may not detect a passenger, and the warn-
ing light may not operate properly.
■If the malfunction indicator lamp comes on while driving
First check the following:
●Is the fuel tank empty?
If it is, fill the fuel tank immediately.
●Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go off after several driving trips.
If the light does not go off even after severa l trips, contact your Lexus dealer as soon as
possible.
■If the low speed four-wheel drive indicator light or the center differential lock indicator
light blinks
Take the specified steps. ( P. 3 0 7 )
If the brake system warning light or the malf unction indicator light also comes on, or the
low speed four-wheel drive indicator light or the center differential lock indicator light
continues to blink after takin g the specified steps, there may be a malfunction 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 differential lock may not be
able to be locked or unlocked. Have the vehicle inspected by your Lexus dealer, immedi-
ately.

5297-2. Steps to take in an emergency
LX570_OM_OM60N01U_(U)
7
When trouble arises
■When the tire pressure warning light comes on
Inspect the tires to check if a tire is punctured.
If a tire is punctured: P. 5 3 6
If none of the tires are punctured:
Turn the engine switch off then turn it to IGNITION ON mode. Check if the tire pressure
warning light comes on or flashes.
If the tire pressure warning light comes on
After the temperature of the tires has lowere d sufficiently, check the inflation pressure
of each tire and adjust th em to the specified level.
If the warning light does not turn off even after several minutes have elapsed, check
that the inflation pressure of each tire is at the specified level and perform initialization.
(  P. 4 8 7 )
If the warning light does not turn off even after several minutes have elapsed, have the
vehicle inspected by your Lexus dealer immediately.
If the tire pressure warning light flashes for 1 minute then stay on
There may be a malfunction in the tire pressure warning system. Have the vehicle
inspected by your Lexus dealer immediately.
■The tire pressure warning light may turn on due to natural causes
The tire pressure warning light may turn on du e to natural causes such as natural air leaks
or tire inflation pressure changes caused by temperature. In this case, adjusting the tire
inflation pressure will turn off the warning light (after a few minutes).
■When a tire is replaced with a spare tire
The spare tire is also equipped with the tire pressure warning valve and transmitter. The
tire pressure warning light will turn on if the tire inflation pressure of the spare tire is low. If
a tire goes flat, even though the flat tire is replaced with the spare tire, the tire pressure
warning light does not turn off. Replace the spar e tire with the repaired tire and adjust the
proper tire inflation pressure. The tire pressu re warning light will turn off after a few min-
utes.
■Conditions that the tire pressure warning system may not function properly
 P. 4 9 0
■Changing the engine oil
Make sure to reset oil change system
■Warning buzzer
In some cases, the buzzer may not be heard due to being in a noisy location or audio
sound.
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5347-2. Steps to take in an emergency
LX570_OM_OM60N01U_(U)
■If “See Owner’s Manual” is shown
●If “Smart Access System Malfunction” is shown, this may be a malfunction.
Immediately have the vehicle inspected by your Lexus dealer.
●If “Transmission Fluid Temp High” is shown, it indicates that the automatic transmission
fluid temperature is too high.
Immediately stop the vehicle in a safe place, shift the shift lever to P and wait until the
warning message and light go off. If the warning message and light go off, you may
start the vehicle again. If the warning message and light do not go off, contact your
Lexus dealer.
■If “Shift to P Before Exiting Vehicle” is shown
Message is displayed when the driver’s door is opened without turning the engine switch
to off with the shift lever in any position other than P.
Shift the shift lever to P.
■If “Power Turned Off to Save Battery” is shown
Power was turned off due to the automatic power off function.
Next time when starting the engine, increase the engine speed slightly and maintain that
level for approximately 5 minutes to recharge the battery.
■When a message that indicates the need for the shift lever operation is shown
To prevent the shift lever from being operated incorrectly or the vehicle from moving
unexpectedly, a message that requires shifting the shift lever may be shown on the multi-
information display. In that case, follow the instruction of the message and shift the shift
lever.
■When “Headlight System Malfunction Visit Your Dealer” is displayed on the multi-
information display
The following systems may be malfunctioning. Have the vehicle inspected by your Lexus
dealer.
●The LED headlight system
●The automatic headlight leveling system
●AHB (Automatic High Beam) (if equipped)
■If “Forward Camera System Unavailable” or “Forward Camera System Unavailable
Clean Windshield” is displayed. (if equipped)
The following systems may be suspended un til the problem shown in the message is
resolved.
●Dynamic radar cruise control with full-speed range
●PCS (Pre-Collision System)
●LDA (Lane Departure Alert)
●AHB (Automatic High Beam)
■If “Engine Oil Level Low” is shown
Indicates that engine oil level is low.
Check the level of engine oil, and add if necessary.
This message may appear if the vehicle is stopped on a slope.
Move the vehicle to a level surface and check to see if the message disappears.

5357-2. Steps to take in an emergency
LX570_OM_OM60N01U_(U)
7
When trouble arises
■If a following message is shown, take appr opriate action and confirm that the message
has disappeared. ( P. 3 0 9 )
●“Crawl Not Available Select L4 an d Shift to [D] or [R] Position”
●“Crawl Not Available Check System Operation Conditions”
●“Turn Assist Function Not Available Check System Operation Conditions”
●“Turn Assist Function Not Available Activate Crawl Control”
■If “Maintenance Required Soon” is shown (U.S.A. only)
Indicates that all maintenance according to the driven distance on the maintenance
schedule
* should be performed soon.
Comes on approximately 4500 miles (7200 k m) after the message has been reset.
If necessary, perform maintenance.
*: Refer to the separate “Scheduled Maintenance Guide” or “Owner’s Manual Supple-
ment” for the maintenance interval applicable to your vehicle.
■If “Maintenance Required Visit Your Dealer” is shown (U.S.A. only)
Indicates that all maintenance is required to correspond to the driven distance on the
maintenance schedule
*.
Comes on approximately 5000 miles (8000 k m) after the message has been reset.
(The indicator will not work properly unless the message has been reset.)
Perform the necessary maintenance. Please reset the message after the maintenance is
performed ( P. 4 6 5 )
*: Refer to the separate “Scheduled Maintenance Guide” or “Owner’s Manual Supple-
ment” for the maintenance interval applicable to your vehicle.
■If “Oil Maintenance Required Soon” is shown
Indicates that the engine oil is scheduled to be changed. (The indicator will not work
properly unless the message has been reset.)
Check the engine oil, and change if necessar y. After changing the engine oil, the mes-
sage should be reset. ( P. 4 7 5 )
■If “Oil Maintenance Required Visit Your Dealer” is shown
Indicates that the engine oil should be chan ged. (The indicator will not work properly
unless the message has been reset.)
Check and change the engine oil, and oil filter by your Lexus dealer. After changing the
engine oil, the message should be reset. ( P. 4 7 5 )
■If “Visit Your Dealer” is shown
The system or part shown on the multi-info rmation display is malfunctioning. Have the
vehicle inspected by your Lexus dealer immediately.
■Warning buzzer
In some cases, the buzzer may not be heard due to being in a noisy location or audio
sound.
NOTICE
■While the engine oil level warning is displayed
Continued engine operation with low engine oil will damage the engine.