2020 LEXUS LX570 check engine light

461
LX570_OM_OM60R61U_(U)
6Maintenance and care
6-1. Maintenance and careCleaning and protecting the vehicle exterior ................ 462
Cleaning and protecting the vehicle interior.................. 465
6-2. Maintenance Maintenance requirements ............................468
General maintenance.............. 470
Emission inspection and maintenance (I/M)
programs .................................... 473
6-3. Do-it-yourself maintenance Do-it-yourself service precautions................................ 474
Hood ............................................... 476
Engine compartment ............... 477
Tires .................................................490
Tire inflation pressure............... 499
Wheels ...........................................503
Air conditioning filter .............. 505
Electronic key battery .............. 507
Checking and replacing fuses ..............................................509
Light bulbs...................................... 512

484
LX570_OM_OM60R61U_(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. Ad d 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 dang erous loss of braking efficiency. Use only
newly opened brake fluid.
Fluid typeFMVSS No.116 DOT 3 or SAE J1703 brake fluid
ItemsClean funnel
WARNING
■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 freq uent refilling, it may
indicate a serious problem.
1
2
3

LX570_OM_OM60R61U_(U)
4856-3. 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
1
2
3
4
Fluid typeAutomatic transmission fluid DEXRON® II or III
ItemsRag or paper, clean funnel (only for adding fluid)
1
2
3
4
5

5297-2. Steps to take in an emergency
LX570_OM_OM60R61U_(U)
7
When trouble arises
■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 se at position sensor, front passeng er’s seat belt buckle switch,
airbags, interconnecting wiring and power so urces, front passenger occupant classifica-
tion system, “AIR BAG ON” and “AIR BAG OFF” indicator lights, seat belt pretensioners
and force limiters. ( P. 38)
■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 the seat, the sens or 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 fu el 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 driv e indicator light or the center differential lock indicator
light blinks
Take the specified steps. ( P. 312)
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 afte r taking the specified steps, ther e may be a malfunction in the
engine, the brake system or the four-wheel dr ive system. In this case, you may not be able
to transfer between “H4” and “L4” modes, an d the center differential lock may not be
able to be locked or unlocked. Have the vehicle inspected by your Lexus dealer, immedi-
ately.

5307-2. Steps to take in an emergency
LX570_OM_OM60R61U_(U)
■When the tire pressure warning light comes on
Inspect the tires to check if a tire is punctured.
If a tire is punctured: P. 537
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. 491)
If the tire pressure wa rning light blinks 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 tu rn 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 spare 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 wa rning system may not function properly
 P. 494
■Changing the engine oil
Make sure to reset oil change system
■Warning buzzer
In some cases, the buzzer ma y not be heard due to being in a noisy location or audio
sound.
1
2

5357-2. Steps to take in an emergency
LX570_OM_OM60R61U_(U)
7
When trouble arises
■If “See Owner’s Manual” is shown
●If “Smart Access System Ma lfunction” 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 Ex iting 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 minu tes 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 operat ed incorrectly or the vehicle from moving
unexpectedly, a message that re quires 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
●Automatic High Beam
■If “Forward Camera System Unavailable” or “Forward Camera System Unavailable
Clean Windshield” is displayed (if equipped)
The following systems may be suspended until the problem shown in the message is
resolved. ( P. 267, 525)
●PCS (Pre-Collision System)
●LDA (Lane Departure Alert)
●Dynamic radar cruise control with full-speed range
●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 appe ar if the vehicle is stopped on a slope.
Move the vehicle to a level surface and check to see if the message disappears.

5557-2. Steps to take in an emergency
LX570_OM_OM60R61U_(U)
7
When trouble arises
Start the engine of the second vehicle. Increase the engine speed slightly and
maintain at that level for approximatel y 5 minutes to recharge the battery of
your vehicle.
Open and close any of the doors with the engine switch off.
Maintain the engine speed of the second vehicle and turn the engine switch to
IGNITION ON mode, then start the vehicle’s engine.
Once the vehicle’s engine has started, remove the jumper cables in the exact
reverse order in which they were connected.
Once the engine starts, have the vehicl e checked at your Lexus dealer, as soon
as possible.
■Starting the engine when the battery is discharged
The engine cannot be started by push-starting.
■Avoiding a discharged battery
●Turn off the headlights and the audio system while the engine is off.
●Turn off any unnecessary electrical components when the vehicle is running at a low
speed for an extended period, such as in heavy traffic, etc.
■Charging the battery
The electricity stored in the battery will disc harge gradually even when the vehicle is not
in use, due to natural discharge and the draini ng effects of certain electrical appliances. If
the vehicle is left for a long time, the battery may discharge, and the engine may be
unable to start. (The battery recharges automatically during driving.)
■When the battery is removed or discharged
The power back door mu st be initialized. (P. 132)
4
5
6
7

568
LX570_OM_OM60R61U_(U)8-1. Specifications
Cooling system
Capacity (Reference)17.1 qt. (16.2 L, 14.3 Imp.qt.)
Coolant type
Use either of the following.
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-basednon-silicate, non-amine, non-nitrite, and non-
borate coolant with long-life hybrid organic
acid technology
Do not use plain water alone.
Ignition system
Spark plug
Make
GapDENSO SK20HR11
0.043 in. (1.1 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust gap when tuning engine.
Electrical system
Battery
Open voltage at 68 F
(20 C):12.6  12.8 V Fully charged
12.2  12.4 V Half charged
11.8  12.0 V Discharged
(Voltage is checked 20 minutes after the engine
and all lights are turned off.)
Charging rates5 A max.