2014 LEXUS LX570 light

7644-3. Do-it-yourself maintenance
LX570_OM_OM60L21U_(U) ■ How to initialize the tire pressure warning system
Park the vehicle in safe plac e and turn the “ENGINE START
STOP” switch to OFF. While the vehicle is moving, initialization is not performed.
Adjust the tire inflation pressure to the specified co ld tire inflation
pressure level. (  P. 8 8 9 )Make sure to adjust the tire pressure to the specified cold tire inflation
pressure level. The tire pressure warning system will operate based on
this pressure level.
Turn the “ENGINE START STOP” switch to IGNITION ON
mode.
Push and hold the tire pressure
warning reset switch until the tire
pressure warning light blinks
slowly 3 times and a message
appears on the multi-information
display.
Wait for a few minutes with the IGNITION ON mode, and then
turn the “ENGINE START STOP” switch to OFF.
Registering ID codes
The tire pressure warning valve and transmitter is equipped with a unique
ID code. When replacing a tire pressu re warning valve and transmitter, it
is necessary to register the ID code of tire pressure warning valve and
transmitter. Have the ID code re gistered by your Lexus dealer.STEP 1
STEP 2
STEP 3
STEP 4
STEP 5

7654-3. Do-it-yourself maintenance
4
Maintenance and care
LX570_OM_OM60L21U_(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 or 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, consult with your Lexus dealer. ■
Replacing tires and wheels
If the ID code of the tire pressure warn ing valve and transmitter is not registered,
the tire pressure warning system will not work properly. After driving for about 20
minutes, the tire pressure warning light comes on after blinking for 1 minute to indi-
cate a system malfunction. ■
Tire life
Any tire over 6 years old must be checked by a qualified technician even if they
have seldom or never been used or damage is not obvious. ■
If the tread wears down 0.16 in. (4 mm) or more on snow tires
The effectiveness of snow tires is lost.

7674-3. Do-it-yourself maintenance
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Maintenance and care
LX570_OM_OM60L21U_(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 pressure warning system 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 settings are unsuccessful, 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 initia lization procedure, 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 system does not replace routine tire inflation pressure
checks. Make sure to check tire inflation pressure as part of your routine of daily
vehicle checks.

7694-3. Do-it-yourself maintenance
4
Maintenance and care
LX570_OM_OM60L21U_(U) CAUTION■
Tire pressure warning system operation
The tire pressure warning system may not provide warning immediately if a tire
bursts or if sudden air leakage occurs. ■
When inspecting or replacing tires
Observe the following precautions to prevent accidents.
Failure to do so may cause da mage to parts of the drive tr ain, as well as dangerous
handling characteristics, which may lead to an accident resulting in death or serious
injury. ●
Do not mix tires of different makes, models or tread patterns.
Also, do not mix tires of remarkably different treadwear. ●
Do not use tire sizes other th an those recommended by Lexus.●
Do not mix differently constructed tires (radial, bias-belted or bias-ply tires). ●
Do not mix summer, all season and snow tires. ●
Do not use tires that have been used on another vehicle.
Do not use tires if you do not know how they were used previously. ■
When initializing the tire pressure warning system
Do not push the tire pressure warning reset switch without first adjusting the tire
inflation pressure to the specified level. Otherwise, the tire pressure warning light
may not come on even if the tire inflation pressure is low, or it may come on when
the tire inflation pressure is actually normal.

7874-3. Do-it-yourself maintenance
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Maintenance and care
LX570_OM_OM60L21U_(U) Fuse layout and amperage ratings
■ Engine compartment (fuse box on the left side)
Fuse Ampere Circuit
1 A/F 15 A A/F heater
2 HORN 10 A Horn
3 EFI MAIN 25 A Multiport fuel injection system/
sequential multiport fuel injection sys-
tem, A/F heater, fuel pump
4 IG2 MAIN 30 A INJ, IGN, MET
5 RR A/C 50 A Blower controller
6 CDS FAN 25 A Condenser fan
7 RR S/HTR 20 A Rear seat heater
8 FR FOG 15 A Front fog lights
9 STOP 15 A Stoplights, high mounted stoplight,
brake controller, ABS, VSC, main
body ECU, Multiport fuel injection
system/sequential multiport fuel injec-
tion system, trailer

7884-3. Do-it-yourself maintenance
LX570_OM_OM60L21U_(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 To w i n g
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

7894-3. Do-it-yourself maintenance
4
Maintenance and care
LX570_OM_OM60L21U_(U) 30 ABS1 50 A ABS
31 ABS2 30 A ABS
32 ST 30 A Starter system
33 IMB 7. 5 A ID code box, smart access system
with push-button start, GBS
34 AM2 5 A Main body ECU
35 DOME2 7. 5 A Vanity lights, overhead module, rear
interior light
36 ECU-B2 5 A Driving position memory system,
power back door ECU, power third
seat
37 AMP 2 30 A Audio system
38 RSE 7. 5 A Rear seat entertainment
39 TOW I N G 30 A To w i n g
40 DOOR NO.2 25 A Main body ECU
41 STR LOCK 20 A Steering lock system
42 TURN-HAZ 15 A Meter, front turn signal lights, side turn
signal lights, rear turn signal lights,
trailer
43 EFI MAIN2 20 A Fuel pump
44 ETCS 10 A Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
45 ALT-S 5 A IC-ALT
46 AMP 1 30 A Audio system
47 RAD NO.1 10 A Navigation system, audio system,
parking assist systemFuse Ampere Circuit

7904-3. Do-it-yourself maintenance
LX570_OM_OM60L21U_(U) 48 ECU-B1 5 A Smart access system with push-button
start, overhead module, yaw rate & G
sensor, tilt and telescopic steering,
meter, cool box, gateway ECU, steer-
ing sensor, VGRS
49 DOME1 10 A Illuminated entry system, power third
seat switch, power back door switch,
clock
50 HEAD LH 15 A Headlight high beam (left)
51 HEAD LL 15 A Headlight low beam (left)
52 INJ 10 A Injector, ignition system
53 MET 5 A Meter
54 IGN 10 A Circuit open, SRS airbag system,
gateway ECU, smart access system
with push-button start, ABS, VSC,
steering lock system, GBS
55 DRL 5 A Daytime running light
56 HEAD RH 15 A Headlight high beam (right)
57 HEAD RL 15 A Headlight low beam (right)
58 EFI NO.2 7. 5 A Air injection system, air flow meter
59 RR A/C NO.2 7. 5 A No circuit
60 DEF NO.2 5 A Outside rear view mirror defoggers
61 SPARE 5 A Spare fuse
62 SPARE 15 A Spare fuse
63 SPARE 30 A Spare fuseFuse Ampere Circuit