lights Lexus GS350 2007 Using the front audio system / LEXUS 2007 GS430/350 (OM30A04U) Service Manual

417
4-3. Do-it-yourself maintenance
4
Maintenance and care
FuseAmpereCircuit
9DOME10
Foot lights, Vanity lights, Gauges and
meters, Steering spot light, Steering
switch illumination, Rear personal
lights, Automatic transmission selec-
tor lever spot light, Front personal
lights
10CDS10NOIS FILTER
11ABS MAIN210ECB system
12ABS MOTOR30ABS
13ABS MAIN110Capacitor
14E/G-B60FR CTRL BATT, ECTS and ALT-S
15ABS150VSC system, ABS MAIN1, ABS
MAIN2 and ABS MTR
16RH J/B-B30AM2, DOOR FR, and DOOR RR
17VGRS40VGRS
18MAIN30H-LP R LWR and H-LP L LWR
19STARTER30Starting system
20LH J/B-B30FL DOOR, RL DOOR and RND
NO.3
21P/ I - B60
Multi-port fuel injection system/
sequential multiport fuel injection
system
22EPS80EPS
23ALT150
RH J/B-AM, LH J/B-AM, E/G-AM,
RR JB, HEATER, DEFOG, FAN1,
FAN2, ABS2, ABS MOTOR, 
ABS MAIN1, and ABS MAIN2

419
4-3. Do-it-yourself maintenance
4
Maintenance and care
■Engine compartment (Type B)
6: only for GS430 equipped with ac tive stabilizer suspension system
FuseAmpereCircuit
1FR CTRL-B25Headlight high beam, horn
2A/F15Exhaust system
3ETCS10
Multiport fuel injection system/
sequential multiport fuel injection
system
4ALT-S7. 5 Charging system
5H-LP CLN30Headlight cleaner
6STB-AM30DC/DC converter
7A/C COMP7. 5 Air conditioning system
8DEICER25
9FR CTRL-AM30Front fog lights, parking lights, wind-
shield washer
10IG210Ignition system
11EFI NO.210Fuel system, exhaust system

420
4-3. Do-it-yourself maintenance
FuseAmpereCircuit
12H-LP R LWR15Headlight low beam (right)
13H-LP L LWR15Headlight low beam (left)
14F/ P M P25Fuel system
15EFI
20
(GS430) 25
(GS350)Multiport fuel injection system/
sequential multiport fuel injection
system
16INJ20
Multiport fuel injection system/
sequential multiport fuel injection
system
17H-LP UPR15Headlight high beams
18HORN10Horns
19WA S H E R20Windshield washer
20FR TAIL10Parking lights
21FR FOG15Front fog lights

423
4-3. Do-it-yourself maintenance
4
Maintenance and care
■Passenger’s side instrument panel
FuseAmpereCircuit
1FR P/SEAT RH30Power seat system
2OBD7. 5On-board diagnosis system
3STOP SW7. 5
Stop/tail lights, Multi-port fuel injec-
tion system/sequential multiport fuel
injection system, Starting system,
ECB system, VSC system, Shift lock
system
4AM17. 5
5TI&IE20
Power tilt and telescopic steering
wheel, Multiplex communication sys-
tem
6SECURITY7. 5Smart access system with push-but-
ton start
7STR LOCK25Steering lock system
8GAUGE7. 5Gauges and meters
9IGN10
Multi-port fuel injection system/
sequential multiport fuel injection
system, SRS airbag system, Stop/tail
lights, Steering lock system, ECB sys-
tem, Lexus Link System ECU, Occu-
pant classification system ECU

426
4-3. Do-it-yourself maintenance
■Luggage compartment
FuseAmpereCircuit
1RR S/SHADE7. 5Rear sunshade
2PSB30Pre-collision seat belt
3RR-IG210
4RR-IG110Pre-collision seat belt, seat belt pre-
tensioners
5RR-B10Trunk light
6RR FOG7. 5
7STOP LP L10Stoplights, back-up light
8STOP LP R10High mounted stoplights
9RR TAIL10Tail lights, license plate lights

427
4-3. Do-it-yourself maintenance
4
Maintenance and care
■Luggage compartment 
(vehicles with active stabilizer suspension system)
FuseAmpereCircuit
1STB FR50Front stabilizer
2STB RR30Rear stabilizer
3STB DC/DC30DC/DC converter
■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. 4 3 8 )
●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 before th
e entire wiring harness is damaged.

435
4-3. Do-it-yourself maintenance
4
Maintenance and care
■Bulbs other than the above
If any of the bulbs listed below has burnt out, have your Lexus dealer
r

eplace it.
● Headlight lo
w beams (high-intensity discharge bulbs)
● F
og lights
●F
ront turn signal lights
●F
ront side marker lights
●Stop
/tail lights
●T
ail lights
●R
ear side marker lights
●High mounted stoplight
● License plate lights
■Condensation build-up on the inside of the lens
Contact your Lexus dealer for more inform ation i
n the following situations. Tempo-
rary condensation build-up on the inside of the headlight lens does not indicate a
ma
lfunction.
●Large drops of water are built up on the inside of the lens.
●Water has built up in side the headlight.
■LED light bulbs
The tail, tail/stop and high mounted stopligh ts co
nsist of a number of LEDs. If any
LEDs burn out, take your vehicle to your Lexus dealer to have the light replaced.
If two or more LEDs in a stoplight burn out, y
our vehicle may not conform to local
laws (SAE).
■High-intensity discharge (HID) headlights
If voltage to the high-intensity discharge bu l
bs is insufficient, the light may not come
on, or may go out temporarily. The high-i ntensity discharge bulbs will come on
when normal power is restored.

436
4-3. Do-it-yourself maintenance
CAUTION
■Replacing light bulbs
●Turn off the headlights. Do not attempt to replace the bulb immediately after turn-
ing off the headlights. 
The bulbs become very hot and may cause burns.
●Do not touch the glass portion of the light bulb with bare hands. Hold the bulb by
the plastic or metal portion. 
If the bulb is scratched or dropped it may blow out or crack.
●Fully install light bulbs and any parts used to secure them. Failing to do so may
result in heat damage, fire, or water ente ring the headlight unit. This may damage
the headlights or cause condensation to build up on the lens.
●Do not attempt to repair or disassemble lig ht bulbs, connectors, electric circuits
or component parts. 
Doing so may result in serious injury due to electric shock.
■High-intensity discharge (HID) headlights
●Contact your Lexus dealer before replac ing high-intensity discharge headlights
(including light bulbs).
●Do not touch the high-intensity discharge headlight's high voltage socket when
the headlights are turned on. An extremely high voltage of 20000V will be dis-
charged and could result in serious injury or death by electric shock.
■To prevent damage or fire
Make sure bulbs are fully seated and locked.

5
When trouble arises
449
5-2. Steps to take in an emergency
If a warning light turns on or a warning buzzer sounds...
Stop the vehicle immediately. Continuing to drive the vehicle may be dangerous.
The following warning indicates a possible problem in the brake system.
Immediately stop the vehicl e in a safe place and contact your Lexus
dealer.
*: Parking brake engaged warning buzzer:
 P. 4 6 3
Warning lightWarning light/Details
(U.S.A.)

(Canada)
Brake system warning light (warning buzzer)*
•Low brake fluid
• Malfunction in the brake system
This light also comes on when the parking brake is not
released. If the light turns off after the parking brake is fully
released, the system is operating normally.
Calmly perform the following actions if any of the warning lights turn on or
flash. If a light turns on or flashes, bu t then turns off, this does not necessar
-
ily indicate a malfunction in the system.

5
When trouble arises
453
5-2. Steps to take in an emergency
■If the malfunction indicator lamp comes on while driving
First check the following:
●Is your vehicle low on gas?
If it is, refuel the vehicle immediately.
●Is the fuel tank cap loose? 
If it is, tighten it securely.
The light will go off after taking several driving trips. 
If the light does not go off even after several trips, contact your Lexus dealer as soon
a
s possible.
■SRS warning light
This warning light system monitors the following:
●The airbag sensor assembly
●Front airbag sensors
●The curtain shield airbag sensors
●The side and curtain shield airbag sensor assemblies
●The driver’s seat position sensor
●Driver’s seat belt buckle switch
●The front passenger occupant classification ECU
●The pressure sensor
●The belt tension sensor
●AIRBAG ON and AIRBAG OFF indicator lights
●Front passenger’s seat belt buckle switch
●The inflators
●The warning light
●The interconnecting wiring and power sources
■Front passenger detection sensor and passenger seat belt reminder
If luggage is placed on the front passenger seat, the front passenger detection sen -
sor may cause the warning light to flash, even if a passenger is not sitting in the seat.