2014 LEXUS LX570 ECU

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

7914-3. Do-it-yourself maintenance
4
Maintenance and care
LX570_OM_OM60L21U_(U) ■ Engine compartment (fuse box on the right side)
Fuse Ampere Circuit
1 HWD1 30 A No circuit
2 TOW BRK 30 A Brake controller
3 RR P/SEAT 30 A Power second seat
4 PWR HTR 7. 5 A No circuit
5 DEICER 20 A Windshield wiper de-icer
6 ALT-CDS 10 A ALT-CDS
7 SECURITY 5 A SECURITY
8 SEAT A/C RH 25 A Seat heaters and ventilators
9 AI PMP HTR 10 A AI pump heater
10 TOW TA I L 30 A Towing tail light system
11 HWD2 30 A No circuit

7924-3. Do-it-yourself maintenance
LX570_OM_OM60L21U_(U) ■ Driver’s side instrument panel
Fuse Ampere Circuit
1 CIG 15 A Cigarette lighter
2 BK/UP LP 10 A Back-up lights, trailer
3 ACC 7. 5 A Audio system, parking assist system,
multi-display assembly, main body
ECU, mirror ECU, satellite radio,
smart access system with push-but-
ton start

7934-3. Do-it-yourself maintenance
4
Maintenance and care
LX570_OM_OM60L21U_(U) 4 PA N E L 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
switches, 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 TA I L 15 A Tail lights, license plate lights, front fog
lights, parking lights, side marker
lightsFuse Ampere Circuit

7944-3. Do-it-yourself maintenance
LX570_OM_OM60L21U_(U) 9 WIPER 30 A Windshield wiper
10 WSH 20 A Windshield washer
11 RR WIPER 15 A Rear window wiper and washer
12 4WD 20 A Four-wheel drive system
13 LH-IG 5 A Alternator, towing, seat heater and
ventilators, windshield wiper de-icer,
front seat belt, emergency flasher,
inverter switch, shift lever switch
14 ECU-IG No.1 5 A ABS, VSC, tilt and telescopic steer-
ing, gateway ECU, shift lock system,
parking assist system, cruise control
switch, pre-collision system, headlight
cleaner, multi-display assembly, rain-
sensing windshield wiper, driving posi-
tion memory system, power door lock
system
15 S/ROOF 25 A Moon roof
16 RR DOOR RH 20 A Po w e r w i n d o w s
17 MIR 15 A Mirror ECU, outside rear view mirror
defoggers
18 RR DOOR LH 20 A Po w e r w i n d o w s
19 FR DOOR LH 20 A Po w e r w i n d o w s
20 FR DOOR RH 20 A Po w e r w i n d o w sFuse Ampere Circuit

7954-3. Do-it-yourself maintenance
4
Maintenance and care
LX570_OM_OM60L21U_(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 Po w e r s e a t
26 PWR OUTLET 15 A Po w e r o u t l e t
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 Po w e r s e a t
31 INVERTER 15 A InverterFuse Ampere Circuit

7964-3. Do-it-yourself maintenance
LX570_OM_OM60L21U_(U) ■ Passenger’s side instrument panel
Fuse Ampere Circuit
1 RSF LH 30 A Third seat adjustment (left)
2 B/DR CLSR RH 30 A Back door closer
3 B/DR CLSR LH 30 A Back door closer
4 RSF RH 30 A Third seat adjustment (right)
5 DOOR DL 15 A No circuit
6 AHC-B 20 A 4-Wheel AHC
7 TEL 5 A Multimedia
8 TOW B K / U P 7. 5 A To w i n g
9 AHC-B No.2 10 A 4-Wheel AHC
10 ECU-IG No.4 5 A VGRS, power back door, rear ECU,
4-Wheel AHC, third seat adjustment,
tire pressure warning system ECU

7974-3. Do-it-yourself maintenance
4
Maintenance and care
LX570_OM_OM60L21U_(U) Fuse Ampere Circuit
11 SEAT-A/C FAN 10 A Ventilators
12 SEAT-HTR 20 A Seat heaters
13 AFS 5 A Adaptive Front-lighting System
14 ECU-IG No.3 5 A Adaptive Front-lighting System,
dynamic radar cruise control system
15 STRG HTR 10 A Heated steering wheel
16 TV 10 A Multi-display assembly■
After a fuse is replaced ●
If the lights do not turn on even afte r the fuse has been replaced, a bulb may
need replacement. (  P. 7 9 9 )●
If the replaced fuse blows again, have the vehicle inspected by your Lexus
dealer.■
If there is an overload in the circuits
The fuses are designed to blow, protecting the wiring harness from damage.