Page 652 of 825
651
4-3. Do-it-yourself maintenance
4
Maintenance and care
GX460_U.S.A. (OM60E69U)
37RAD NO.115 AAudio system, navigation system, rear
seat entertainment system
38AM27. 5 AStarter system
39RAD NO.210 ANavigation system
40MAYDAY7. 5 AMAYDAY
41AMP30 AAudio system
42ABS NO.150 AABS, VSC
43ABS NO.230 AABS, VSC
44AIR PMP50 AAir pump
45SECURITY10 ASecurity horn, self power siren, double
lock ECU
46SMART7. 5 ASmart access system with push button
start
47STRG LOCK20 ASteering lock system
48TOW I N G B R K30 ATo w i n g
49WIP RR15 ARear window wiper
50DOME10 A
Interior lights, personal lights, vanity
lights, door courtesy lights, footwell
lights, outer foot lights, overhead
module
FuseAmpereCircuit
Page 654 of 825
653
4-3. Do-it-yourself maintenance
4
Maintenance and care
GX460_U.S.A. (OM60E69U)Under the instrument panel
FuseAmpereCircuit
1P/O U T L E T15 APo w e r o u t l e t
2ACC7. 5 A
Outside rear view mirror motor,
BODY ECU, air conditioning system,
audio system, navigation system,
parking assist system, back up relay,
DSS#2 ECU, AT indicator, EFI ECU,
shift lock ECU, DCM, MAYDAY
ECU
3BKUP LP10 A
Back-up lights, audio system, multi
information display, DSS#2 ECU,
parking assist sensor
4TOW I N G B K L P10 ATo w i n g
5AV S20 AAir suspension system
6KDSS10 AKDSS ECU
Page 655 of 825
654
4-3. Do-it-yourself maintenance
GX460_U.S.A. (OM60E69U)
74WD20 A4WD system, rear differential lock
8P/ S E AT F L30 AFront power seat (left)
9D/L NO.225 ADouble lock system
10PSB30 APSB ECU
11TI & TE15 ATilt and telescopic steering
12FOG FR15 AFront fog lights
13OBD7. 5 ADLC 3
14A/C7. 5 AAir conditioning system
15AM17. 5 AStarting system
16DOOR RL25 ARear power window (left)
17ECU-IG NO.110 A
Shift lock ECU, VSC ECU, ABS
ECU, steering sensor, yaw rate sensor,
sequential switch, auto wiper ECU,
back up relay, tilt & telescopic steer-
ing, PSB ECU, DSS#1 ECU, front
radar sensor, AFS ECU, TIRE PRESS
ECU, DRIVER MON ECU
18IG17. 5 A
Emergency flashers, ALT, towing,
VSC, SROP LP relay, MGC relay,
condenser fan relay
FuseAmpereCircuit
Page 657 of 825
656
4-3. Do-it-yourself maintenance
GX460_U.S.A. (OM60E69U)
30IGN10 A
EFI ECU, C/OPN RLY, VSC ECU, air
bag ECU, smart entry & start system,
steering lock ECU, CAN gateway
ECU
31GAUGE7. 5 AMeter
32PA N E L7. 5 A
Emergency flasher switch, seat heater
switch, 4WD switch, center differen-
tial lock switch, rear differential lock
switch, air suspension, VSC off switch,
interior light switch, glove box light,
shift position indicator light, audio sys-
tem, navigation system, steering
switch, parking assist system switch,
headlight leveling switch, headlight
cleaner switch, folding seat switch,
outside rear view mirror switch,
ODO/TRIP switch
33TA I L10 A
Front position lights, tail lights, license
plate lights, EFI ECU, rear fog lights,
towing, front fog lights
FuseAmpereCircuit
Page 674 of 825

When trouble arises5
673
GX460_U.S.A. (OM60E69U)
5-1. Essential informationEmergency flashers ............... 674
If your vehicle needs
to be towed ............................ 675
If you think something is
wrong ....................................... 681
Fuel pump shut off system..................................... 682
Event data recorder.............. 683
5-2. Steps to take in
an emergency
If a warning light turns
on or a warning buzzer
sounds... ................................. 686
If a warning message is
displayed................................ 698
If you have a flat tire............... 720
If the engine will not start .... 734
If the shift lever cannot be
shifted from P ....................... 736
If you lose your keys ............... 737
If the electronic key does
not operate properly.......... 738
If the vehicle battery is
discharged .............................. 741
If your vehicle overheats ...... 744
If the vehicle becomes
stuck......................................... 747
Page 676 of 825
5
When trouble arises
675
5-1. Essential information
GX460_U.S.A. (OM60E69U)
If your vehicle needs to be towed
Before towingThe following may indicate a problem with your transmission. Contact
your Lexus dealer before towing.
● The engine is running but the vehicle will not move.
● The vehicle makes an abnormal sound.
If towing is necessary, we recommen d having your vehicle towed by your
Lexus dealer or a commercial towing service, using a lift-type truck or a flat
bed truck.
Use a safety chain system for all towing , and abide by all state/provincial
and local laws.
The wheels and axle on the ground must be in good condition.
If they are damaged, use a to wing dolly or flat bed truck.
Page 677 of 825
676
5-1. Essential information
GX460_U.S.A. (OM60E69U)
Emergency towingIf a tow truck is not available in an emergency, your vehicle may be tem-
porarily towed using a cable or ch ain secured to the emergency towing
eyelet. This should only attempted on hard surfaced roads for short dis-
tances at low speeds.
A driver must be in the vehicle to s teer and operate the brakes. The vehi-
cle’s wheels, drive train, axles, steering and brakes must be in good condi-
tion.
Towing hook (front)
Towing hook (rear)
Page 678 of 825
5
When trouble arises
677
5-1. Essential information
GX460_U.S.A. (OM60E69U)
Towing with a sling-type truck
Towing with a wheel lift-type truckFrom front Use a towing dolly under the rear
wheels.
From rear Use a towing dolly under the front
wheels.