Page 5 of 600

5
1
8 7
6
5
4
3
2
GS350_GS F_OM_OM30J07U_(U)
9
6-3. Do-it-yourself maintenance Do-it-yourself service precautions................................ 376
Hood ............................................... 378
Positioning a floor jack ............ 379
Engine compartment ................ 381
Tires ................................................. 394
Tire inflation pressure .............. 404
Wheels ........................................... 407
Air conditioning filter ............... 409
Electronic key battery................. 411
Checking and replacing fuses................................................413
Headlight aim (vehicles with single-beam head lights) ........ 417
Light bulbs ......................................419
7-1. Essential information Emergency flashers .................. 424
If your vehicle has to be stopped in an
emergency ................................ 425
If the vehicle is trapped in rising water ................................ 426 7-2. Steps to take in an
emergency
If your vehicle needs to be towed ................................427
If you think something is wrong................ 433
Fuel pump shut off system...... 434
If a warning light turns on or a warning buzzer
sounds ......................................... 435
If a warning message is displayed .................................... 442
If you have a flat tire (vehicles with spare tire) ......................... 473
If you have a flat tire (vehicles without spare ti re) .................. 484
If the engine will not start ........ 498
If the parking brake cannot be released................................500
If the electronic key does not operate properly..................... 502
If the vehicle battery is discharged.................................505
If your vehicle overheats......... 509
If the vehicle becomes stuck ...............................................513
7When trouble arises
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361
GS350_GS F_OM_OM30J07U_(U)
6Maintenance and care
6-1. Maintenance and careCleaning and protecting the vehicle exterior ................ 362
Cleaning and protecting the vehicle interior.................. 367
6-2. Maintenance Maintenance requirements ... 370
General maintenance.............. 372
Emission inspection and maintenance (I/M)
programs .................................... 375
6-3. Do-it-yourself maintenance Do-it-yourself service precautions................................ 376
Hood ............................................... 378
Positioning a floor jack ............ 379
Engine compartment ................ 381
Tires ................................................. 394
Tire inflation pressure............... 404
Wheels ........................................... 407
Air conditioning filter ...............409
Electronic key battery ................. 411
Checking and replacing fuses ............................................... 413
Headlight aim (vehicles with single-beam headlights).........417
Light bulbs...................................... 419
Page 365 of 600

GS350_GS F_OM_OM30J07U_(U)
3656-1. Maintenance and care
6
Maintenance and care
WARNING
■When washing the vehicle
Do not apply water to the inside of the engine compartment. Doing so may cause the
electrical components etc. to catch fire.
■When cleaning the windshield (vehicles with rain-sensing windshield wipers)
●When the upper part of the windshield where the raindrop sensor is located is
touched by hand
●When a wet rag or similar is held close to the raindrop sensor
●If something bumps against the windshield
●If you directly touch the raindrop sensor body or if something bumps into the raindrop
sensor
■Precautions regarding the exhaust pipes and rear bumper diffusers
Exhaust gases cause the exhaust pipes and rear bumper diffusers to become quite hot.
When washing the vehicle, be careful not to touch the pipes and rear bumper diffusers
until they have cooled sufficiently, as touc hing hot exhaust pipes and rear bumper dif-
fusers can cause burns.
■Precaution regarding the rear bumper with Blind Spot Monitor (if equipped)
If the paint of the rear bumper is chipped or scratched, the system may malfunction. If
this occurs, consult your Lexus dealer.
Turn off AUTO mode of the wiper to preventthe wiper from operating. ( P. 229)
If AUTO mode is selected, the wipers may
operate unexpectedly in the following situa-
tions, and may result in hands being caught or
other serious injuries and cause damage to the
wiper blades.
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GS350_GS F_OM_OM30J07U_(U)6-3. Do-it-yourself maintenance
Do-it-yourself service precautions
*: Vehicles with sing
le-beam headlights
If you perform maintenance by yourself, be sure to follow the correct proce-
dure as given in these sections.
ItemsParts and tools
Battery condition
( P. 391)•Warm water• Baking soda•Grease
• Conventional wrench (for terminal clamp bolts)
Brake fluid level
( P. 390)
• 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. 388)
•“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
technology
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 Cool ant” is pre-mixed with 55%
coolant and 45% deionized water.
• Funnel (used only for adding coolant)
Engine oil level
( P. 385)
• “Toyota Genuine Motor Oil” or equivalent
• Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses ( P. 413)• Fuse with same amperage rating as original
Headlight aim*
( P. 417)• Phillips-head screwdriver
Light bulbs
( P. 419)
• Bulb with same number and wattage rating as original
• Phillips-head screwdriver•Flathead sc rewdriver
•Wrench
Radiator and con-
denser (P. 389)
Tire inflation pres-
sure (P. 404)• Tire pressure gauge• Compressed air source
Washer fluid
( P. 393)• Water or washer fluid containing antifreeze (for winter use)
• Funnel (used only for adding water or washer fluid)
Page 381 of 600
381
GS350_GS F_OM_OM30J07U_(U)6-3. Do-it-yourself maintenance
6
Maintenance and care
Engine compartment
GS350
Fuse boxes (
P. 413)
Battery ( P. 391)
Engine oil level dipstick (P. 385)
Engine coolant reservoir (P. 388)
Engine oil filler cap ( P. 386) Brake fluid reservoir
(P. 390)
Washer fluid tank ( P. 393)
Electric cooling fans
Condenser ( P. 389)
Radiator ( P. 389)1
2
3
4
5
6
7
8
9
10
Page 382 of 600
382
GS350_GS F_OM_OM30J07U_(U)6-3. Do-it-yourself maintenance
GS F
Fuse boxes (
P. 413)
Battery ( P. 391)
Engine oil level dipstick (P. 385)
Engine coolant reservoir (P. 388)
Engine oil filler cap ( P. 386) Brake fluid reservoir
(P. 390)
Washer fluid tank ( P. 393)
Electric cooling fans
Condenser ( P. 389)
Radiator ( P. 389)1
2
3
4
5
6
7
8
9
10
Page 413 of 600
413
GS350_GS F_OM_OM30J07U_(U)6-3. Do-it-yourself maintenance
6
Maintenance and care
Checking and replacing fuses
Turn the engine switch off.
Open the fuse box cover.
If any of the electrical components do not operate, a fuse may have blown. If
this happens, check and repl
ace the fuses as necessary.
1
2
Engine compartment (type A fuse
box)Engine compartment (type B fuse
box)
Push the tab in and lift the lid off. Push the tab in and lift the lid off.
Driver’s side instrument panelPassenger’s side instrument panel
Remove the lid. Remove the lid.
Page 414 of 600
414
GS350_GS F_OM_OM30J07U_(U)6-3. Do-it-yourself maintenance
Trunk
Push the tab in and lift the lid off.
Remove the lid.
Remove the fuse with the pullout
tool.
Only type A fuse can be removed using
the pullout tool.
3