2015 LEXUS LX570 air conditioning

7824-3. Do-it-yourself maintenance
LX570_OM_OM60L96U_(U) ■ Cleaning method
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 filter and blow for
approximately 2 minutes at 72
psi (500 kPa, 5.0 kgf/cm 2
or
bar).
If it is not available, have the filter
cleaned by your Lexus dealer.
■ Replacement method
Remove the air conditioning fil-
ter and replace it with a new
one. The “  UP” marks shown on the
filter should be pointing up.

7834-3. Do-it-yourself maintenance
4
Maintenance and care
LX570_OM_OM60L96U_(U) ■
Checking interval
Inspect, clean and replace the air conditioning filter according to the maintenance
schedule. In dusty areas or areas with heav y traffic flow, more frequent cleaning or
early replacement may be required. (For scheduled maintenance information, refer
to the “Warranty and Services Guide”, “O wner’s Manual Supplement” or “Sched-
uled Maintenance”.) ■
If air flow from the vents decreases dramatically
The filter may be clogged. Check the filter and replace if necessary.
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 not clean the filter with water.

7924-3. Do-it-yourself maintenance
LX570_OM_OM60L96U_(U) 10 SEAT-A/C LH 25 A Seat heaters and ventilators
11 HWD4 30 A No circuit
12 HWD3 30 A No circuit
13 AHC 50 A 4-Wheel AHC
14 PTC-1 50 A PTC heater
15 PTC-2 50 A PTC heater
16 PTC-3 50 A PTC heater
17 RH-J/B 50 A RH-J/B
18 SUB BATT 40 A Towing
19 VGRS 40 A VGRS ECU
20 H-LP CLN 30 A Headlight cleaner
21 DEFOG 30 A Rear window defogger
22 SUB-R/B 100 A SUB-R/B
23 HTR 50 A Front air conditioning system
24 PBD 30 A Power back door ECU
25 LH-J/B 150 A LH-J/B
26 ALT 180 A Alternator
27 A/PUMP NO.1 50 A AI DRIVER
28 A/PUMP NO.2 50 A AI DRIVER 2
29 MAIN 40 A Headlight, daytime running light sys-
tem, HEAD LL, HEAD RL, HEAD LH,
HEAD RHFuse Ampere Circuit

7974-3. Do-it-yourself maintenance
4
Maintenance and care
LX570_OM_OM60L96U_(U) 4 PANEL 10 A Ashtray, brake controller, cigarette
lighter, cool box, center differential
lock, driving mode switches, multi-
information display, air conditioning
system, glove box light, audio system,
emergency flashers, headlight cleaner
switch, driving position memory but-
tons, outside rear view mirror
switches, overhead module, roll sens-
ing of curtain shield airbags off switch,
rear heater panel, shift lever switch,
power back door main switch, camera
switch, VSC OFF switch, steering
switch, console switch, instrument
panel light control
5 ECU-IG No.2 10 A Air conditioning system, rear heater
panel, overhead module, ABS, VSC,
steering sensor, yaw rate & G sensor,
main body ECU, stoplights, moon
roof, anti-glare inside rear view mirror
6 WINCH 5 A No circuit
7 A/C IG 10 A Cool box, condenser fan, cooler com-
pressor, rear window and outside rear
view mirror defoggers, smog sensor
8 TAIL 15 A Tail lights, license plate lights, front fog
lights, parking lights, side marker
lightsFuse Ampere Circuit

7994-3. Do-it-yourself maintenance
4
Maintenance and care
LX570_OM_OM60L96U_(U) 21 RR FOG 7.5 A No circuit
22 A/C 7.5 A Air conditioning system
23 AM1 5 A No circuit
24 TI & TE 15 A Tilt and telescopic steering
25 FR P/SEAT RH 30 A Power seat
26 PWR OUTLET 15 A Power outlet
27 OBD 7.5 A On Board Diagnostics
28 PSB 30 A Pre-collision system
29 DR/LCK 25 A Main body ECU
30 FR P/SEAT LH 30 A Power seat
31 INVERTER 15 A InverterFuse Ampere Circuit

8245-1. Essential information
LX570_OM_OM60L96U_(U) If you think something is wrong If you notice any of the following sy mptoms, your vehicle probably needs
adjustment or repair. Contact your Lexus dealer as soon as possible.
■ Visible symptoms
● Fluid leaks under the vehicle
(Water dripping from the air conditioning after use is normal.)
● Flat-looking tires or uneven tire wear
● Engine coolant temperature gaug e needle continually points
higher than normal
● Engine oil pressure gauge continually points lower than normal.
● Voltmeter continually points higher or lower than normal.
■ Audible symptoms
● Changes in exhaust sound
● Excessive tire squeal when cornering
● Strange noises related to the suspension system
● Pinging or other noises related to the engine
■ Operational symptoms
● Engine missing, stumbling or running rough
● Appreciable loss of power
● Vehicle pulls heavily to one side when braking
● Vehicle pulls heavily to one side when driving on a level road
● Loss of brake effectiveness, spongy feeling, pedal almost touches
the floor

5
When trouble arises
8795-2. Steps to take in an emergency
LX570_OM_OM60L96U_(U) If your vehicle overheats
Correction procedures
Stop the vehicle in a safe place and turn off the air conditioning
system, and then stop the engine.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the engine has cooled down
sufficiently, inspect the hoses and
radiator core (radiator) for any
leaks.
Radiator
Cooling fans If a large amount of coolant leaks,
immediately contact your Lexus
dealer.The following may indicate that your vehicle is overheating.
● The needle of the engine coolant temperature gauge (  P. 192)
enters the red zone or a loss of engine power is experienced.
(For example, the vehicle speed does not increase.)
● Steam is coming from under the hood. STEP 1
STEP 2
STEP 3

8805-2. Steps to take in an emergency
LX570_OM_OM60L96U_(U) The coolant level is satisfactory if it
is between the “F” and “L” lines on
the reservoir.
Reservoir
“F”
“L”
Radiator cap
Add coolant if necessary. Water can be used in an emer-
gency if coolant is unavailable.
Start the engine and tu rn the air conditioning system on to check
that the radiator cool ing fans operate and to check for coolant
leaks from the radiator or hoses. The fans operate when the air conditioning system is turned on immedi-
ately after a cold start. Confirm that the fans are operating by checking
the fan sound and air flow. If it is difficult to check these, turn the air con-
ditioning system on and off repeatedly. (The fans may not operate in
freezing temperatures.)
If the fans are not operating:
Stop the engine immediately and contact your Lexus dealer.
If the fans are operating:
Have the vehicle inspected at the nearest Lexus dealer. STEP 4
STEP 5
STEP 6
STEP 7