LEXUS LX570 2018 Owners Manual

501
LX570_OM_OM60Q78U_(U) 6-3. Do-it-yourself maintenance
6
Maintenance and care
Air conditioning filter Turn the engine switch IGNITION ON mode and switch to recirculated air
mode, then turn the engine switch off.
Open the glove box and remove the separate tray. ( → P. 421)
Remove the filter cover.
Remove the filter case.The air conditioning filter must be cl eaned or changed re gularly to maintain
air conditioning efficiency.
Removal method 1
2
3
4

502
LX570_OM_OM60Q78U_(U) 6-3. Do-it-yourself maintenance
If the filter is dirty, clean by blowing
compressed air through the filter from
the downward side. Hold the air gun 2 in. (5 cm) from the fil-
ter and blow for approximately 2 min-
utes at 72 psi (500 kPa, 5.0 kgf/cm 2
or
bar).
If it is not availa ble, have the filter
cleaned by your Lexus dealer.
Remove the air conditioning filter and
replace it with a new one. The “ ↑ UP” marks shown on the filter
should be pointing up.
■
Checking interval
Inspect, clean and replace the air conditio ning filter accordin g to the maintenance
schedule. In dusty areas or area s with heavy traffic flow, more frequent cleaning or early
replacement may be required.
(For scheduled maintenance information, please refer to the “Owner’s Manual
Supplement” or “Scheduled Maintenance”.) ■
If air flow from the vents decreases dramatically
The filter may be clogged. Check the filter and replace if necessary.Cleaning method
Replacement method
NOTICE ■
To prevent damage to the system●
When using the air conditioning system, make sure that a filter is always installed.●
When cleaning the filter, do no t clean the filter with water.

503
LX570_OM_OM60Q78U_(U) 6-3. Do-it-yourself maintenance
6
Maintenance and care
Electronic key battery ●
Flathead screwdriver ●
Lithium battery (CR2032)
Take out the mechanical key.
Remove the cover. To prevent damage to the key, cover the
tip of the flathead screwdriver with a
tape.
Remove the depleted battery. When removing the cover, if the battery
cannot be seen due to the electronic key
module attaching to the upper cover,
remove the electronic key module from
the cover so that the battery is visible as
shown in the illustration.
Insert a new battery with the “+” termi-
nal facing up.Replace the battery with a new one if it is depleted.
You will need the following items:
Replacing the battery 1
2
3

504
LX570_OM_OM60Q78U_(U) 6-3. Do-it-yourself maintenance■
Use a CR2032 lithium battery ●
Batteries can be purc hased at your Lexus dealer, loca l electrical appliance shops or
camera stores. ●
Replace only with the same or equivalent type recommended by the manufacturer. ●
Dispose of used batteries according to the local laws. ■
When the card key battery needs to be replaced
The battery for the card key is available only at Lexus dealers. Your Lexus dealer can
replace the battery for you. ■
If the electronic key battery is depleted
The following symptoms may occur: ●
The smart access system with push-button start and wireless remote control will not
function properly. ●
The operational rang e will be reduced.
WARNING ■
Removed battery and other parts
These parts are small and if swallowed by a child, they can cause choking. Keep away
from children. Failure to do so coul d result in death or serious injury.
NOTICE ■
For normal operation after replacing the battery
Observe the following precautions to prevent accidents: ●
Always work with dry hands.
Moisture may cause the battery to rust. ●
Do not touch or move any other co mponent inside the remote control.●
Do not bend either of the battery terminals.

505
LX570_OM_OM60Q78U_(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 repl ace the fuses as necessary.1
2 
Engine compartment 
Driver’s side instrument panel
Push the tab in and lift the lid off. Remove the lid.

506
LX570_OM_OM60Q78U_(U) 6-3. Do-it-yourself maintenance
Remove the fuse with the pull-out tool.
Only type A fuse can be removed using
the pull-out tool.
Check if the fuse is blown.
Normal fuse
Blown fuse Type A and B:
Replace the blown fuse with a new fuse of an appropriate amperage rating. The
amperage rating can be found on the fuse box lid.
Type C and D:
Contact your Lexus dealer. 3
4
1
2
Type A 
Type B
Type C 
Type D

LX570_OM_OM60Q78U_(U) 5076-3. Do-it-yourself maintenance
6
Maintenance and care ■
After a fuse is replaced ●
If the lights do not turn on even after the fuse has been replaced, a bulb may need
replacement. ( → P. 508)●
If the replaced fuse blows again, have th e vehicle inspected by your Lexus dealer.■
If there is an overload in a circuit
The fuses are designed to blow, protec ting the wiring ha rness from damage.
WARNING ■
To prevent system breakdowns and vehicle fire
Observe the following precautions.
Failure to do so may cause damage to th e vehicle, and possibly a fire or injury.●
Never use a fuse of a higher amperage rati ng than indicated, or use any other object
in place of a fuse. ●
Always use a genuine Lexus fuse or equivalent.
Never replace a fuse with a wi re, even as a temporary fix.●
Do not modify the fuses or the fuse boxes.
NOTICE ■
Before replacing fuses
Have the cause of electrical overload dete rmined and repaired by your Lexus dealer,
as soon as possible.

508
LX570_OM_OM60Q78U_(U) 6-3. Do-it-yourself maintenance
Light bulbs ■
LED lights
If any of the lights listed below has burnt out, have it replaced by your Lexus dealer.●
Headlights ●
Parking lights/dayti me running lights●
Front side marker lights ●
Fog lights ●
Front turn signal lights ●
Side turn signal lights ●
Outer foot lights ●
Rear turn signal lights ●
High mounted stoplight ●
Stop/tail lights ●
License plate lights ●
Stop lights ●
Back-up lights ●
Rear side marker lights ●
Running board light ■
Condensation build-up on the inside of the lens
Temporary condensation build-up on the inside of the headlight lens does not indicate a
malfunction. Contact your Lexus dealer for mo re information in the following situations: ●
Large drops of water are built up on the inside of the lens. ●
Water has built up inside the headlight.If any lights burn out, have it replaced by your Lexus dealer.
WARNING ■
Handling lights
Do not touch the lights while they are on or immediately after they have been turned
off. Doing so may result in burns.

509
LX570_OM_OM60Q78U_(U) 7When trouble arises 7-1. Essential information
Emergency flashers ................... 510
If your vehicle has to be
stopped in an emergency....... 511
7-2. Steps to take in an emergency
If your vehicle needs
to be towed................................. 512
If you think something is
wrong ............................................ 518
Fuel pump shut off system ....... 519
If a warning light turns
on or a warning buzzer
sounds..........................................520
If a warning message is
displayed.....................................528
If you have a flat tire .................. 532
If the engine will not start ........ 544
If the electronic key does
not operate properly ............. 546
If the vehicle battery is
discharged ................................. 549
If your vehicle overheats ......... 552
If the vehicle becomes
stuck .............................................555

510
LX570_OM_OM60Q78U_(U) 7-1. Essential information
Emergency flashers Press the switch. All the turn signal lights will flash.
To turn them off, press the switch once
again. ■
Emergency flashers
If the emergency flashers are used for a long time while the engine is not operating, the
battery may discharge.The emergency flashers are used to warn other drivers when the vehicle has
to be stopped in the road due to a breakdown, etc.