2012 Lexus GS350 Owner's Manual

719 6-3. Do-it-yourself maintenance
6
Maintenance and care
GS350/250_EE (OM30C36E)
13DOOR RR30Power window (rear right-hand)
14RAD NO.230Audio system
15STRG LOCK15Steering lock system
16MULTIMEDIA10Navigation system, Remote Touch
17RAD NO.130Audio system
18AIR BAG10SRS airbag system
19OBD7.5On-board diagnosis system
20TI & TE20Electric tilt and telescopic steering col-
umn
21ACC7.5
Body ECU, head-up display, RR CTRL,
navigation system, transmission, Remote
Touch, Remote Touch screen
FuseAmpereCircuit

7206-3. Do-it-yourself maintenance
GS350/250_EE (OM30C36E)
Trunk
FuseAmpereCircuit
1PSB30Pre-crash seat belts
2PTL25Power trunk lid
3RR J/B-B10Smart entry & start system
4RR S/HTR20Seat heaters (rear)
5FR S/HTR10Seat heaters/ventilators (front)
6RR FOG10Rear fog light
7DC/DC-S (HV)7.5No circuit
8BATT FAN (HV)20No circuit
9SECURITY7.5SECURITY
10ECU-B NO.37.5Parking brake
11TRK OPN7.5Power trunk lid
12DCM (HV)7.5No circuit
13AC INV (HV)20No circuit
14RR-IG15Radar sensor, Blind Spot Monitor
15RR ECU-IG10
Power trunk lid, parking brake, tension
reducer (rear left-hand), RR CTRL SW,
tire pressure warning system
16EPS-IG5Electric power steering system
17BACK UP7.5Back-up light

721 6-3. Do-it-yourself maintenance
6
Maintenance and care
GS350/250_EE (OM30C36E)
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. 722)
If the replaced fuse blows again, have the vehicle inspected by any autho-
rized Lexus dealer or repairer, or another duly qualified and equipped pro-
fessional.
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 any
authorized Lexus dealer or repairer, or another duly qualified and equipped
professional as soon as possible.

7226-3. Do-it-yourself maintenance
GS350/250_EE (OM30C36E)
Light bulbs
Check the wattage of the light bulb to be replaced. (P. 852)
P. 661
You may replace the following bulbs by yourself. The difficulty
level of replacement varies depending on the bulb. As there is a
danger that components may be damaged, we recommend that
replacement is carried out by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
Preparing for light bulb replacement
Removing the engine compartment covers

723 6-3. Do-it-yourself maintenance
6
Maintenance and care
GS350/250_EE (OM30C36E)
Front
Rear
Bulb locations
Front turn signal light
Front fog light (if equipped)1
2
Back-up light (right-hand drive vehicles)
Back-up light (left-hand drive vehicles)
Rear turn signal light
Outer foot light1
2
3
4

7246-3. Do-it-yourself maintenance
GS350/250_EE (OM30C36E)
Front fog lights (if equipped)
To allow enough working
space, turn the steering
wheel to the opposite side
of the bulb to be replaced.
Remove the 2 fender liner
clips.
Turn the steering wheel to the
left when replacing the right
side light bulb, and turn the
steering wheel to the right when
replacing the left side light bulb.
To take out the clips, turn the
head of the clip to unlock, then
remove by pulling.
While holding the clamp
open, pull and remove the
tabs and open the fender
liner.
Unplug the connector while
pressing the lock release.
Replacing light bulbs
1
2
3

725 6-3. Do-it-yourself maintenance
6
Maintenance and care
GS350/250_EE (OM30C36E)Turn the bulb base counter-
clockwise.
Set the new light bulb.
Align the 3 tabs on the light
bulb with the mounting, and
insert. Turn it clockwise to set.
Set the connector.
After installing the connector,
shake the bulb base gently to
check that it is not loose, turn
the fog lights on once and visu-
ally confirm that no light is
leaking through the mounting.
Reinstall the fender liner
and install the clips.
Insert the clips and turn to lock.
4
5
6
7

7266-3. Do-it-yourself maintenance
GS350/250_EE (OM30C36E)
Front turn signal lights
For the left side only: To
allow enough working
space, turn the steering
wheel all the way to the
right, then remove the bolts
and take off the cover.
Turn the bulb base counterclockwise.
1
2
Right sideLeft side