2012 Lexus GS250 engine

695
6 6-3. Do-it-yourself maintenance
Maintenance and care
GS350/250_EE (OM30C36E)
Air conditioning filter
Turn the engine switch off.
Open the glove box. Lift up
the side with the stay, discon-
nect the stay tabs and remove
the partition by pulling hori-
zontally.
Press the tabs and remove the
filter cover.
Press the tabs and remove the
filter case.
The air conditioning filter must be changed regularly to maintain
air conditioning efficiency.
Removal method
1
2
3
4

7006-3. Do-it-yourself maintenance
GS350/250_EE (OM30C36E)
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. 705)
Open the fuse box cover.
Engine compartment: type A fuse box (left-hand drive vehicles)
Push the tab in and lift the lid
off.
Engine compartment: type A fuse box (right-hand drive vehicles)
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

701 6-3. Do-it-yourself maintenance
6
Maintenance and care
GS350/250_EE (OM30C36E)
Engine compartment (type B fuse box)
Push the tab in and lift the lid
off.
Left side instrument panel (left-hand drive vehicles)
Remove the lid.
Left side instrument panel (right-hand drive vehicles)
Remove the lid.

705 6-3. Do-it-yourself maintenance
6
Maintenance and care
GS350/250_EE (OM30C36E)
Engine compartment (type A fuse box)
Left-hand drive vehicles
Fuse layout and amperage ratings
FuseAmpereCircuit
1LH J/B-B40Left-hand junction block
2VGRS40No circuit
3RH J/B-B40Right-hand junction block
4P/I-B NO.280F/PMP, EFI MAIN, A/F HTR, EDU, IG2
MAIN
5ALT150R H J / B A LT, P / I A LT, L H J / B A LT,
LUG J/B ALT
6P/I ALT100RR DEF, TAIL, FR FOG, DEICER,
PANEL, RR S/SHADE
7RH J/B ALT80Right-hand junction block

7106-3. Do-it-yourself maintenance
GS350/250_EE (OM30C36E)
Engine compartment (type B fuse box)
FuseAmpereCircuit
1IGN10Starting system
2INJ10Multiport fuel injection system/sequen-
tial multiport fuel injection system
3EFI NO.210Fuel system, exhaust system
4IG2 MAIN20IGN, GAUGE, INJ, AIR BAG, IG2
NO.1, LH-IG2
5EFI MAIN25
Multiport fuel injection system/sequen-
tial multiport fuel injection system, EFI
NO.2
6A/F15Air intake system
7EDU20Multiport fuel injection system/sequen-
tial multiport fuel injection system
8F/PMP25Multiport fuel injection system/sequen-
tial multiport fuel injection system
9SPARE30Spare fuse
10SPARE20Spare fuse
11SPARE10Spare fuse

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

737
7When trouble arises
GS350/250_EE (OM30C36E)
7-1. Essential information
Emergency flashers ........... 738
If your vehicle
has to be stopped
in an emergency .............. 7397-2. Steps to take in an emergency
If your vehicle needs
to be towed ..................... 740
If you think something
is wrong .......................... 747
Fuel pump shut off system 748
If a warning light turns on or
a warning buzzer sounds 749
If a warning message
is displayed ..................... 757
If you have a flat tire (vehicles
with a spare tire) ............. 782
If you have a flat tire (vehicles
without a spare tire) ........ 797
If the engine will not start . 815
If the shift lever cannot be
shifted from P ................. 817
If the parking brake
cannot be released........... 818
If the electronic key does not
operate properly .............. 821
If the vehicle battery
is discharged ................... 824
If your vehicle overheats .. 829
If the vehicle
becomes stuck................. 832

7387-1. Essential information
GS350/250_EE (OM30C36E)
Emergency flashers
Press the switch.
All the turn signals will flash.
To turn them off, press the switch
once again.
Emergency flashers
If the emergency flashers are used for a long time while the engine is not
operating, the battery may discharge.
The emergency flashers are used to warn other drivers when the
vehicle has to be stopped in the road to a breakdown, etc.