656
GS350_U (OM30C34U)
6-3. Do-it-yourself maintenance
11DOOR FL30Outside rear view mirror defoggers, power
window (front left-hand)
12CAPACITOR
(HV)10No circuit
13STRG LOCK15Steering lock
14D/L NO.225Power door lock system
15DOOR RL30Power window (rear left-hand)
16HAZ15Turn signal lights, emergency flashers
17LH-IG210
Multiport fuel injection system/sequential
multiport fuel injection system, stop lights,
smart access system with push-button start,
steering lock system
18LH J/B-B7. 5Body ECU
19S/ROOF20Moon roof
20P/ S E AT 2 F/ L25Po w e r s e a t s
21TI & TE20Electric tilt and telescopic steering column
22A/C7. 5Air conditioning system
FuseAmpereCircuit
GS350_U (OM30C34U)
6576-3. Do-it-yourself maintenance
6
Maintenance and care
■Passenger’s side instrument panel
FuseAmpereCircuit
1P/ S E AT 1 F/ R30Po w e r s e a t s
2FR P/OUTLET15Po w e r o u t l e t ( f r o n t )
3RR P/OUTLET15Power outlet (rear)
4P/ S E AT 2 F/ R25Po w e r s e a t s
5AV S20AV S
6STRG HTR15Heated steering wheel
7WA S H20Windshield washer
8RH ECU-IG10
Navigation system, VGRS, pre-collision seat
belts, air conditioning system, Lexus night
view
9RH-IG10
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
10DOOR FR30
Front right-hand door control system (out-
side rear view mirror defoggers, power win-
dow)
11DOOR RR30Power window (rear right-hand)
12RAD NO.230Audio system
13AM27. 5Smart access system with push-button start
658
GS350_U (OM30C34U)
6-3. Do-it-yourself maintenance
14MULTIMEDIA10Navigation system, Remote Touch
15RAD NO.130Audio system
16AIR BAG10SRS airbag system, occupant classification
system
17OBD7. 5On-board diagnosis system
18ACC7. 5
Body ECU, head-up display, RR CTRL, navi-
gation system, transmission, Remote Touch,
DCM, Remote Touch screen
FuseAmpereCircuit
GS350_U (OM30C34U)
6596-3. Do-it-yourself maintenance
6
Maintenance and care
■Trunk
FuseAmpereCircuit
1PSB30Pre-collision seat belts
2PTL25Power trunk opener and closer
3RR J/B-B10Smart access system with push-button start
4RR S/HTR20Seat heaters (rear)
5FR S/HTR10Seat heaters/ventilators (front)
6RR FOG10No circuit
7DC/DC-S (HV)7. 5No circuit
8BATT FAN (HV)20No circuit
9SECURITY7. 5SECURITY
10ECU-B NO.37. 5Parking brake
11TRK OPN7. 5Power trunk opener and closer
12DCM (HV)7. 5No circuit
13AC INV (HV )20No circuit
14RR-IG15Radar sensor, Blind Spot Monitor
15RR ECU-IG10
Power trunk opener and closer, parking
brake, tension reducer (rear left-hand), RR
CTRL SW, tire pressure warning system,
DRS
16EPS-IG5Electric power steering system
17BACK UP7. 5Back-up lights
660
GS350_U (OM30C34U)
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 Lexu s 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
GS350_U (OM30C34U)
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 foll owing correct starting procedures.
( P. 1 5 4 )
●There may be a malfunction in the engine immobilizer system.
( P. 6 8 )
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. 7 3 6 )
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
815Alphabetical index
GS350_U (OM30C34U)
First-aid kit storage net ......................558
Flat tire .......................................................722
Floor mats ................................................... 26
FluidAutomatic transmission .................. 757
Brake ....................................................... 758
Washer .................................................. 628
Fog lights ................................................... 195 Replacing light bulbs ....................... 665
Switch........................................................ 195
Wattage ....................................................761
Footwell light .......................................... 548
Front passenger occupant classification system .............................47
Front personal lights............................ 549
Front seats ................................................ 128 Adjustment ............................................. 128
Cleaning ................................................ 598
Correct driving posture .................... 28
Driving position memory ................ 130
Head restraints ..................................... 136
Power easy access system ............ 133
Seat heaters ......................................... 568
Seat position memory....................... 130
Seat ventilators ................................... 569
Front side marker lights ...................... 190 Light switch ............................................ 190
Replacing light bulbs ..........................671
Welcome light illumination control ..................................................... 101 Front turn signal lights ..........................184
Replacing light bulbs ....................... 667
Turn signal lever ...................................184
Wattage ................................................... 761
Fuel..............................................................754 Capacity ................................................. 754
Fuel gauge ................................................79
Fuel pump shut off system ........... 685
Information............................................ 762
Refueling ................................................ 204
Type.............................................. 204, 754
Warning light ...................................... 689
Warning messages ............................710
Fuel filler door........................................ 204 If the fuel filler door cannot be opened ......................... 207
Refueling ................................................ 204
Fuel pump shut off system ................ 685
Fuses.......................................................... 648
Garage door opener...........................579
Gauges......................................................... 79
Glove box ............................................... 553
Glove box light...................................... 553
F
G
820Alphabetical index
GS350_U (OM30C34U)
Rear turn signal lights .......................... 184Replacing light bulbs ....................... 669
Turn signal lever .................................. 184
Wattage ....................................................761
Rear view mirror Inside rear view mirror ..................... 140
Outside rear view mirrors ...............142
Rear view monitor system ..................251
Rear window defoggers .................... 365
Refueling .................................................. 204 Capacity .................................................754
Fuel types ...............................................754
If the fuel filler door cannot be opened .........................207
Opening the fuel tank cap............ 206
Remote Touch ....................................... 306
Remote Touch screen ........................308
Replacing Electronic key battery ..................... 646
Fuses........................................................ 648
Light bulbs ............................................ 663
Tires .......................................................... 722
Reporting safety defects for U.S. owners................................... 790
Reset the maintenance data ............ 602 Safety Connect ..................................... 586
Seat belts .................................................... 30
Adjusting the seat belt.......................... 31
Automatic Locking Retractor .........32
Child restraint system installation ............................................. 60
Cleaning and maintaining the seat belt .......................................599
Emergency Locking Retractor.................................................32
How to wear your seat belt............. 30
How your child should wear the seat belt ...........................................32
Pre-collision seat belts ........................32
Pregnant women, proper seat belt use ......................................... 33
Reminder light and buzzer .......... 689
Seat belt extender .................................32
Seat belt pretensioners ........................ 31
SRS warning light .............................. 687
Seat heaters............................................ 568
Seat position memory ..........................130
Seat ventilators...................................... 569
Seating capacity ..................................... 168S