Lexus GS - 2013 Fuse Box Diagram

Lexus GS - 2013 Fuse Box Diagram

565
5-7. Other interior features
5
Interior features
NOTICE
To avoid damaging the power outlets
Close the power outlet lids when the power outlets are not in use.
Foreign objects or liquids that enter the power outlets may cause a short circuit.
To prevent blown fuse
Do not use an accessory that uses more than 12V 10A.
To prevent battery discharge
Do not use the power outlets longer than necessary when the engine is off.
609
6-3. Do-it-yourself maintenance
6
Maintenance and care
Do-it-yourself service precautions
If you perform maintenance by yourself, be sure to follow the correct
procedure as given in these sections.
Items
Parts and tools
Battery condition
(
P. 624)
Warm water
Baking soda
Grease
Conventional wrench
(for terminal clamp bolts)
Distilled water
Brake fluid level
(
P. 623)
FMVSS No.116 DOT 3 or SAE J1703
brake fluid
Rag or paper towel
Funnel (used only for adding brake
fluid)
Engine coolant level
(
P. 620)
Toyota
Super Long Life Coolant” or
a similar high quality ethylene glycol-
based non-silicate, non-amine, non-
nitrite and non-borate coolant with
long-life hybrid organic acid technol-
ogy
For the U.S.A.:
“Toyota Super Long Life Coolant” is
pre-mixed with 50% coolant and
50% deionized water.
For Canada:
“Toyota Super Long Life Coolant” is
pre-mixed with 55% coolant and
45% deionized water.
Funnel (used only for adding coolant)
Engine oil level
(
P. 617)
“Toyota
Genuine
Motor
Oil”
or
equivalent
Rag or paper towel
Funnel (used only for adding engine
oil)
Fuses
(
P. 648)
Fuse with same amperage rating as
original
615
6-3. Do-it-yourself maintenance
6
Maintenance and care
Engine compartment
Fuse boxes
(
P. 648)
Battery
(
P. 624)
Engine oil level dipstick
(
P. 617)
Engine coolant reservoir
(
P. 620)
Engine oil filler cap
(
P. 618)
Brake fluid reservoir
(
P. 623)
Washer fluid tank
(
P. 628)
Electric cooling fans
Condenser
(
P. 622)
Radiator
(
P. 622)
1
2
3
4
5
6
7
8
9
10
648
6-3. Do-it-yourself maintenance
Checking and replacing fuses
Turn the engine switch off.
After a system failure, see “Fuse layout and amperage ratings” for
details about which fuse to check. (
P. 651)
Open the Fuse box cover.
X
Engine compartment (type A fuse box)
Push the tab in and lift the lid off.
X
Engine compartment (type B fuse box)
Push the tab in and lift the lid off.
If any of the electrical components do not operate, a fuse may have
blown. If this happens, check and replace the fuses as necessary.
1
2
3
650
6-3. Do-it-yourself maintenance
Remove the fuse with the pullout
tool.
Only type A fuse can be removed
using the pullout 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.
4
5
1
2
X
Type A
X
Type B
X
Type C
X
Type D
651
6-3. Do-it-yourself maintenance
6
Maintenance and care
Engine compartment (type A fuse box)
Fuse layout and amperage ratings
Fuse
Ampere
Circuit
1
LH J/B-B
40
Left-hand junction block
2
VGRS
40
VGRS
3
RH J/B-B
40
Right-hand junction block
4
P/I-B NO.2
80
F/PMP, EFI MAIN, A/F HTR, EDU, IG2
MAIN
5
ALT
150
RH J/B ALT, P/I ALT, LH J/B ALT, LUG J/B
ALT
6
P/I ALT
100
RR DEF, TAIL, FR FOG, DEICER, PANEL,
RR S/SHADE
7
RH J/B ALT
80
Right-hand junction block
8
MPX-B
10
Smart access system with push-button start,
electric tilt and telescopic steering column,
power seats, head-up display, front right-
hand door ECU, gauges and meters, steer-
ing sensor, yaw rate and G sensor, overhead
module, front left-hand door ECU, power
trunk opener and closer, RR CTRL SW,
clock, body ECU, CAN gateway ECU
652
6-3. Do-it-yourself maintenance
9
DOME
7.5
Personal lights, ornament lights, trunk light,
footwell lights, door courtesy lights, vanity
lights, rear door inside handle illuminations,
power trunk opener and closer
10
EPS
80
EPS
11
ARS
80
Dynamic rear steering
12
HTR
50
Air conditioning system
13
ABS NO.1
40
VDIM
14
LUG J/B ALT
50
Luggage compartment junction block
15
PTC NO.1
50
PTC heater
16
PTC NO.2
50
PTC heater
17
ABS NO.2
50
VDIM
18
ST
30
Starting system
19
H-LP LO
30
Headlights, H-LP RLY
20
D/C CUT
30
DOME, MPX-B
21
DCM
7.5
DCM
22
ECU-B
7.5
Smart access system with push-button start
23
ALT-S
7.5
Charging system
24
ETCS
10
Multiport fuel injection system/sequential
multiport fuel injection system
25
HORN
10
Horn
26
R/B-B
20
EPS-B, ODS, TV
27
P/I-B NO.1
50
Headlights, daytime running lights
28
EPB
30
Parking brake
29
LUG J/B-B
40
Luggage compartment junction block
30
FAN NO.1
80
Electric cooling fans
31
LH J/B ALT
60
Left-hand junction block
32
H-LP CLN
30
Headlight cleaner
Fuse
Ampere
Circuit
653
6-3. Do-it-yourself maintenance
6
Maintenance and care
Engine compartment (type B fuse box)
33
FAN NO.2
40
Electric cooling fans
34
A/C COMP
7.5
Air conditioning system
35
FILTER
10
Condenser
Fuse
Ampere
Circuit
Fuse
Ampere
Circuit
1
IGN
10
Starting system
2
INJ
10
Multiport fuel injection system/sequential
multiport fuel injection system
3
EFI NO.2
10
Fuel system, exhaust system
4
IG2 MAIN
20
IGN, GAUGE, INJ, AIR BAG, IG2 NO.1,
LH-IG2
5
EFI MAIN
25
Multiport fuel injection system/sequential
multiport fuel injection system, EFI NO.2
6
A/F
15
Air intake system
7
EDU
20
Multiport fuel injection system/sequential
multiport fuel injection system
8
F/PMP
25
Multiport fuel injection system/sequential
multiport fuel injection system
9
SPARE
30
Spare fuse
654
6-3. Do-it-yourself maintenance
10
SPARE
20
Spare fuse
11
SPARE
10
Spare fuse
12
H-LP LH-LO
20
Left-hand headlight
13
H-LP RH-LO
20
Right-hand headlight
14
WASH-S
5
Driver support system
15
WIP-S
7.5
Windshield wipers, power management sys-
tem
16
COMB SW
5
Windshield wipers
17
TV
7.5
Remote Touch screen
18
EPS-B
5
Electric power steering
19
ODS
5
Occupant classification system
20
IG2 NO.1
5
Power management system, DCM, CAN
gateway ECU
21
GAUGE
5
Gauges and meters
Fuse
Ampere
Circuit
655
6-3. Do-it-yourself maintenance
6
Maintenance and care
Driver’s side instrument panel
Fuse
Ampere
Circuit
1
STOP
7.5
Stop lights, high mounted stoplight
2
P/W-B
5
Power window master switch
3
P/SEAT1 F/L
30
Power seats
4
D/L NO.1
25
Power door lock system
5
NV-IR
10
Lexus night view
6
FL S/HTR
10
Seat heaters/ventilators
7
WIPER
30
Windshield wipers
8
WIPER-IG
5
Windshield wipers
9
LH-IG
10
Seat belts, body ECU, AFS, overhead mod-
ule, raindrop sensor, inside rear view mirror,
lane camera sensor (LKA), head-up display,
shift lock system, intuitive parking assist, front
left-hand door ECU, driver monitor system,
Remote Touch screen, electric tilt and tele-
scopic steering column, power seats, moon
roof, intuitive parking assist switch
10
LH ECU-IG
10
VDIM, D-SW MODULE (Blind Spot Moni-
tor, heated steering wheel), driver support
system, AFS, EPB
656
6-3. Do-it-yourself maintenance
11
DOOR FL
30
Outside rear view mirror defoggers, power
window (front left-hand)
12
CAPACITOR
(HV)
10
No circuit
13
STRG LOCK
15
Steering lock
14
D/L NO.2
25
Power door lock system
15
DOOR RL
30
Power window (rear left-hand)
16
HAZ
15
Turn signal lights, emergency flashers
17
LH-IG2
10
Multiport fuel injection system/sequential
multiport fuel injection system, stop lights,
smart access system with push-button start,
steering lock system
18
LH J/B-B
7.5
Body ECU
19
S/ROOF
20
Moon roof
20
P/SEAT2 F/L
25
Power seats
21
TI & TE
20
Electric tilt and telescopic steering column
22
A/C
7.5
Air conditioning system
Fuse
Ampere
Circuit
657
6-3. Do-it-yourself maintenance
6
Maintenance and care
Passenger’s side instrument panel
Fuse
Ampere
Circuit
1
P/SEAT1 F/R
30
Power seats
2
FR P/OUTLET
15
Power outlet (front)
3
RR P/OUTLET
15
Power outlet (rear)
4
P/SEAT2 F/R
25
Power seats
5
AVS
20
AVS
6
STRG HTR
15
Heated steering wheel
7
WASH
20
Windshield washer
8
RH ECU-IG
10
Navigation system, VGRS, pre-collision seat
belts, air conditioning system, Lexus night
view
9
RH-IG
10
Tension
reducer,
seat
heater/ventilator
switches,
AWD
system,
front
right-hand
door ECU, CAN gateway ECU, tire pres-
sure warning system, power seats, driver
monitor system
10
DOOR FR
30
Front right-hand door control system (out-
side rear view mirror defoggers, power win-
dow)
11
DOOR RR
30
Power window (rear right-hand)
12
RAD NO.2
30
Audio system
13
AM2
7.5
Smart access system with push-button start
658
6-3. Do-it-yourself maintenance
14
MULTIMEDIA
10
Navigation system, Remote Touch
15
RAD NO.1
30
Audio system
16
AIR BAG
10
SRS airbag system, occupant classification
system
17
OBD
7.5
On-board diagnosis system
18
ACC
7.5
Body ECU, head-up display, RR CTRL, navi-
gation system, transmission, Remote Touch,
DCM, Remote Touch screen
Fuse
Ampere
Circuit
659
6-3. Do-it-yourself maintenance
6
Maintenance and care
Trunk
Fuse
Ampere
Circuit
1
PSB
30
Pre-collision seat belts
2
PTL
25
Power trunk opener and closer
3
RR J/B-B
10
Smart access system with push-button start
4
RR S/HTR
20
Seat heaters (rear)
5
FR S/HTR
10
Seat heaters/ventilators (front)
6
RR FOG
10
No circuit
7
DC/DC-S (HV)
7.5
No circuit
8
BATT FAN (HV)
20
No circuit
9
SECURITY
7.5
SECURITY
10
ECU-B NO.3
7.5
Parking brake
11
TRK OPN
7.5
Power trunk opener and closer
12
DCM (HV)
7.5
No circuit
13
AC INV (HV)
20
No circuit
14
RR-IG1
5
Radar sensor, Blind Spot Monitor
15
RR ECU-IG
10
Power trunk opener and closer, parking
brake, tension reducer (rear left-hand), RR
CTRL SW, tire pressure warning system,
DRS
16
EPS-IG
5
Electric power steering system
17
BACK UP
7.5
Back-up lights
660
6-3. Do-it-yourself maintenance
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. 663)
If the replaced fuse blows again, have the vehicle inspected by your Lexus dealer.
If there is an overload in a circuit
The fuses are designed to blow, protecting the wiring harness from damage.
When replacing light bulbs
Lexus recommends that you use genuine Lexus products designed for this vehicle.
Because certain bulbs are connected to circuits designed to prevent overload, non-
genuine parts or parts not designed for this vehicle may be unusable.
CAUTION
To prevent system breakdowns and vehicle fire
Observe the following precautions.
Failure to do so may cause damage, and possibly a fire or injury.
Never use a fuse of a higher amperage rating than that 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 wire, even as a temporary fix.
This can cause extensive damage or even fire.
Do not modify the fuses or fuse boxes.
NOTICE
Before replacing fuses
Have the cause of electrical overload determined and repaired by your Lexus
dealer as soon as possible.
735
7
When trouble arises
7-2. Steps to take in an emergency
If the engine will not start
One of the following may be the cause of the problem:
There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
The engine may be flooded.
Try to restart the engine again following correct starting procedures.
(
P. 154)
There may be a malfunction in the engine immobilizer system.
(
P. 68)
One of the following may be the cause of the problem:
The battery may be discharged. (
P. 743)
The battery terminal connections may be loose or corroded.
The engine starting system may be malfunctioning due to an electrical
problem such as electronic key battery depletion or a blown fuse. How-
ever, an interim measure is available to start the engine. (
P. 736)
If the engine will not start even though correct starting procedures are
being followed (
P. 154), consider each of the following points:
The engine will not start even though the starter motor operates
normally.
The starter motor turns over slowly, the interior lights and head-
lights are dim, or the horn does not sound or sounds at a low vol-
ume.
The starter motor does not turn over
587
5-7. Other interior features
5
Interior features
The power outlets can be used when
12 V: The power switch is in ACCESSORY or ON mode.
120 V AC: The power switch is in ON mode.
NOTICE
To avoid damaging the power outlets
Close the power outlet lids when the power outlets are not in use.
Foreign objects or liquids that enter the power outlets may cause a short circuit.
To prevent the fuse from being blown
12 V:
Do not use an accessory that uses more than 12 V 10 A.
120 V AC:
Do not use a 120 V AC appliance that requires more than 100W. If a 120 V AC
appliance that consumes more than 100 W is used, the protection circuit will cut
the power supply.
To prevent 12-volt battery discharge
Do not use the power outlets longer than necessary when the hybrid system is off.
Appliances that may not operate properly (120 V AC)
The following 120 V AC appliances may not operate properly even if their power
consumption is under 100 W:
Appliances with high initial peak wattage
Measuring devices that process precise data
Other appliances that require an extremely stable power supply
632
6-3. Do-it-yourself maintenance
Fuses
(
P. 670)
Fuse with same amperage rating as
original
Headlight aim
(
P. 685)
Phillips-head screwdriver
Light bulbs
(
P. 687)
Bulb with same number and wattage
rating as original
Phillips-head screwdriver
Flathead screwdriver
Wrench
Radiator and condenser
(
P. 644)
Tire inflation pressure
(
P. 661)
Tire pressure gauge
Compressed air source
Washer fluid
(
P. 646)
Water or washer fluid containing anti-
freeze (for winter use)
Funnel (used only for adding water or
washer fluid)
Items
Parts and tools
637
6-3. Do-it-yourself maintenance
6
Maintenance and care
Engine compartment
12-volt battery
P. 647
Engine oil level dipstick
(
P. 639)
Engine coolant reservoir
(
P. 642)
Engine oil filler cap
(
P. 640)
Power control unit coolant res-
ervoir
(
P. 642)
Brake fluid reservoir
(
P. 645)
Fuse box
(
P. 670)
Washer fluid tank
(
P. 646)
Electric cooling fans
Condenser
(
P. 644)
Radiator
(
P. 644)
1
2
3
4
5
6
7
8
9
10
670
6-3. Do-it-yourself maintenance
Checking and replacing fuses
Turn the power switch off.
After a system failure, see “Fuse layout and amperage ratings” for
details about which fuse to check. (
P. 674)
Open the fuse box cover.
X
Engine compartment
Remove
the
engine
compart-
ment
cover
(
P.
638)
and
remove all of the clips.
Push the tabs on either side to
detach the lock and lift the lid off
while pulling the lock plate.
When installing the lid, check that
the lock plate and the tabs on either
side are connected correctly.
If any of the electrical components do not operate, a fuse may have
blown. If this happens, check and replace the fuses as necessary.
1
2
3
672
6-3. Do-it-yourself maintenance
X
The upper part of the 12-volt battery
Pull the strap upwards to lift up
the 12-volt battery cover.
Remove the fuse with the pullout
tool.
Only type A fuse can be removed
using the pullout tool.
4
673
6-3. Do-it-yourself maintenance
6
Maintenance and care
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.
5
1
2
X
Type A
X
Type B
X
Type C
X
Type D
674
6-3. Do-it-yourself maintenance
Engine compartment
Fuse layout and amperage ratings
Fuse
Ampere
Circuit
1
IGN
10
Starting system
2
INJ
10
Multiport fuel injection system/sequential
multiport fuel injection system
3
EFI NO.2
10
Air intake system, exhaust system
4
IG2 MAIN
20
IGN, GAUGE, INJ, AIR BAG, IG2 NO.1,
LH-IG2
5
EFI MAIN
25
Multiport fuel injection system/sequential
multiport fuel injection system, EFI NO.2
6
A/F
15
Air flow sensor
7
EDU
20
Multiport fuel injection system/sequential
multiport fuel injection system
8
F/PMP
25
Multiport fuel injection system/sequential
multiport fuel injection system
9
H-LP RH-LO
20
Right-hand headlight (low beam)*
10
H-LP LH-LO
20
Left-hand headlight (low beam)*
675
6-3. Do-it-yourself maintenance
6
Maintenance and care
11
ABS MAIN 2
10
Brake system
12
ABS MAIN 1
10
Brake system
13
IGCT NO.1
30
IGCT NO.2, IGCT NO.3, IGCT NO.4,
IGCT NO.5
14
ECU-B
7.5
Smart access system with push-button start
15
INV W/P
10
Hybrid system
16
ETCS
10
Multiport fuel injection system/sequential
multiport fuel injection system
17
EPS-B
10
Electric power steering system
18
D/C CUT
30
DOME, MPX-B
19
HORN
10
Horn
20
ODS
5
Occupant classification system
21
TV
7.5
Remote Touch screen
22
P/I-B NO.2
80
IG2 MAIN, EFI MAIN, EDU, F/PMP, A/F
23
ABS NO.2
30
ECB
24
P/I-B NO.1
50
H-LP HI RH, H-LP HI LH, DRL
25
H-LP LO
30
H-LP LO RH, H-LP LO LH
26
LH J/B-B
40
Left-hand junction block
27
RH J/B-B
40
Right-hand junction block
28
VGRS
40
No circuit
29
OIL PMP
60
Oil pump
30
IGCT NO.5
7.5
Power management system, shift position
sensor
31
WIP-S
7.5
Windshield wipers, driver support system
32
WASH-S
5
Windshield washer, driver support system
33
COMB SW
5
Windshield wipers
Fuse
Ampere
Circuit
676
6-3. Do-it-yourself maintenance
34
DOME
7.5
Personal lights, ornament lights, trunk light,
footwell lights, door courtesy lights, vanity
lights, rear door inside handle illuminations,
power trunk opener and closer
35
MPX-B
10
Body ECU, smart access system with push-
button start, electric tilt and telescopic steer-
ing column, power seats, head-up display,
front door ECU, gauges and meters, steer-
ing sensor, yaw rate and G sensor, overhead
module, RR CTRL SW, power trunk opener
and closer, clock, CAN gateway ECU
36
IGCT NO.4
10
Power control unit
37
IGCT NO.3
7.5
Hybrid battery (traction battery), DC/DC
converter
38
IGCT NO.2
5
Hybrid system
39
IG2 NO.1
5
DCM, CAN gateway ECU
40
GAUGE
5
Gauges and meters
41
DC/DC
150
RH-J/B DC/DC, P/I DC/DC
42
P/I DC/DC
100
RR S/SHADE, DEFOG, FOG, TAIL,
PANEL
43
RH J/B DC/DC
80
Right-hand junction block
44
LH J/B DC/DC
50
Left-hand junction block
45
H-LP CLN
30
Headlight cleaner
46
FAN NO.2
40
Electric cooling fans
47
LUG J/B DC/DC
80
Luggage compartment junction block
48
FAN NO.1
80
Electric cooling fans
49
PTC NO.1
50
PTC heater
50
PTC NO.2
50
PTC heater
51
HTR
50
Air conditioning system
Fuse
Ampere
Circuit
677
6-3. Do-it-yourself maintenance
6
Maintenance and care
*
:
Low beam and high beam are the same bulb. (vehicles with discharge headlights)
52
ABS NO.1
30
ECB
53
ECU-B NO.2
7.5
No circuit
54
DEICER
25
Windshield wiper de-icer
55
ABS MAIN 3
10
Brake system
56
FILTER
10
Condenser
57
A/C W/P
7.5
Air conditioning system
58
SPARE
10
Spare fuse
59
SPARE
30
Spare fuse
60
SPARE
20
Spare fuse
Fuse
Ampere
Circuit
678
6-3. Do-it-yourself maintenance
Driver’s side instrument panel
Fuse
Ampere
Circuit
1
STOP
7.5
Stop lights, high mounted stoplight
2
P/W-B
5
Power window master switch
3
P/SEAT1 F/L
30
Power seats
4
D/L NO.1
25
Power door lock system
5
NV-IR
10
Lexus night view
6
FL S/HTR
10
Seat heaters/ventilators
7
WIPER
30
Windshield wipers
8
WIPER-IG
5
Windshield wipers
9
LH-IG
10
Seat belts, body ECU, AFS, overhead mod-
ule, raindrop sensor, inside rear view mirror,
lane camera sensor (LKA), head-up display,
shift lock system, intuitive parking assist, front
left-hand door ECU, driver monitor system,
Remote Touch screen, electric tilt and tele-
scopic steering column, power seats, moon
roof, windshield wiper de-icer, intuitive park-
ing assist
switch,
PTC
heater,
headlight
cleaner
10
LH ECU-IG
10
VDIM, ECB, D-SW MODULE (Blind Spot
Monitor, heated steering wheel), driver sup-
port system, AFS, EPB, air conditioning sys-
tem
679
6-3. Do-it-yourself maintenance
6
Maintenance and care
11
DOOR FL
30
Outside rear view mirror defoggers, power
window (front left-hand)
12
CAPACITOR
(HV)
10
Capacitor
13
STRG LOCK
15
Steering lock system
14
D/L NO.2
25
Power door lock system
15
DOOR RL
30
Power window (rear left-hand)
16
HAZ
15
Turn signal lights, emergency flashers
17
LH-IG2
10
Multiport fuel injection system/sequential
multiport fuel injection system, stop lights,
smart access system with push-button start,
steering lock system, brake system, power
management system
18
LH J/B-B
7.5
Body ECU
19
S/ROOF
20
Moon roof
20
P/SEAT2 F/L
25
Power seats
21
TI & TE
20
Electric tilt and telescopic steering column
22
A/C
7.5
Air conditioning system
Fuse
Ampere
Circuit
680
6-3. Do-it-yourself maintenance
Passenger’s side instrument panel
Fuse
Ampere
Circuit
1
P/SEAT1 F/R
30
Power seats
2
FR P/OUTLET
15
Power outlet (front)
3
RR P/OUTLET
15
Power outlet (rear)
4
P/SEAT2 F/R
25
Power seats
5
AVS
20
AVS
6
STRG HTR
15
Heated steering wheel
7
WASH
20
Windshield washer
8
RH ECU-IG
10
Navigation system, pre-collision seat belts,
air conditioning system, ECB, Lexus night
view, yaw rate and G sensor
9
RH-IG
10
Tension
reducer,
seat
heater/ventilator
switches, front right-hand door ECU, CAN
gateway ECU, tire pressure warning system,
power seats
10
DOOR FR
30
Front right-hand door control system (out-
side rear view mirror defoggers, power win-
dow)
11
DOOR RR
30
Power window (rear right-hand)
12
RAD NO.2
30
Audio system
13
AM2
7.5
Power management system
681
6-3. Do-it-yourself maintenance
6
Maintenance and care
14
MULTIMEDIA
10
Navigation system, Remote Touch
15
RAD NO.1
30
Audio system
16
AIR BAG
10
SRS airbag system, occupant classification
system
17
OBD
7.5
On-board diagnosis system
18
ACC
7.5
Body ECU, head-up display, RR CTRL, navi-
gation system, hybrid transmission, Remote
Touch, DCM, Remote Touch screen, clock
Fuse
Ampere
Circuit
682
6-3. Do-it-yourself maintenance
Trunk
Fuse
Ampere
Circuit
1
PSB
30
Pre-collision seat belts
2
PTL
25
Power trunk opener and closer
3
RR J/B-B
10
Smart access system with push-button start
4
RR S/HTR
20
Seat heaters (rear)
5
FR S/HTR
10
Seat heaters/ventilators (front)
6
RR FOG
10
No circuit
7
DC/DC-S (HV)
7.5
DC/DC converter
8
BATT FAN (HV)
20
Hybrid battery (traction battery) cooling fan
system
9
SECURITY
7.5
SECURITY
10
ECU-B NO.3
7.5
Parking brake
11
TRK OPN
7.5
Power trunk opener and closer
12
DCM (HV)
7.5
DCM
13
AC INV (HV)
20
Power outlet (120V AC)
14
RR-IG1
5
Radar sensor, Blind Spot Monitor
15
RR ECU-IG
10
Power trunk opener and closer, parking
brake, tension reducer (rear left-hand), RR
CTRL SW, tire pressure warning system
16
EPS-IG
5
Electric power steering system
17
BACK UP
7.5
Back-up lights
683
6-3. Do-it-yourself maintenance
6
Maintenance and care
The upper part of the 12-volt battery
*
*
: When one or more of the fuses in this unit are blown, the unit needs to be
replaced as a whole.
Fuse
Ampere
Circuit
1
EPB
30
Parking brake
2
LUG-J/B BATT
40
Luggage compartment junction block
3
EPS
80
Electric power steering
4
ARS
80
No circuit
5
MAIN
220
Engine compartment junction block
684
6-3. Do-it-yourself maintenance
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. 687)
If the replaced fuse blows again, have the vehicle inspected by your Lexus dealer.
If there is an overload in a circuit
The fuses are designed to blow, protecting the wiring harness from damage.
When replacing light bulbs
Lexus recommends that you use genuine Lexus products designed for this vehicle.
Because certain bulbs are connected to circuits designed to prevent overload, non-
genuine parts or parts not designed for this vehicle may be unusable.
CAUTION
To prevent system breakdowns and vehicle fire
Observe the following precautions.
Failure to do so may cause damage, and possibly a fire or injury.
Never use a fuse of a higher amperage rating than that 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 wire, even as a temporary fix.
This can cause extensive damage or even fire.
Do not modify the fuses or fuse boxes.
NOTICE
Before replacing fuses
Have the cause of electrical overload determined and repaired by your Lexus
dealer as soon as possible.
762
7-2. Steps to take in an emergency
If the hybrid system will not start
One of the following may be the cause of the problem:
The electronic key may not be functioning properly. (
P. 768)
There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
There may be a malfunction in the immobilizer system. (
P. 79)
There may be a malfunction in the steering lock system.
The hybrid system may be malfunctioning due to an electrical problem
such as electronic key battery depletion or a blown fuse. However,
depending on the type of malfunction, an interim measure is available
to start the hybrid system. (
P. 763)
One of the following may be the cause of the problem:
The 12-volt battery may be discharged. (
P. 770)
The 12-volt battery terminal connections may be loose or corroded.
Reasons for the hybrid system not starting vary depending on the situa-
tion. Check the following and perform the appropriate procedure:
The hybrid system will not start even though the correct starting
procedure is being followed. (
P. 189)
The interior lights and headlights are dim, or the horn does not
sound or sounds at a low volume.