check engine Lexus GX470 2008 Owner's Guide

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2-5. Driving information
■Before towing
Check that the following conditions are met:
●The vehicle’s tires are properly inflated. (→P. 4 1 9 )
●Trailer tires are inflated according to the trailer manufacturer’s recommenda-
tion.
●All trailer lights work.
●All lights work each time you connect them.
●The trailer ball is set up at the proper height for the coupler on the trailer.
●The vehicle remains level when a loaded or unloaded trailer is hitched. Do not
drive if the vehicle is not level, and check for improper tongue load, overloading,
worn suspension, or other possible causes.
●The trailer cargo is securely loaded.
●The rear view mirrors conform to all applicable federal, state/provincial or local
regulations. If they do not, install rear view mirrors appropriate for towing pur-
poses.
■Break-in schedule
Lexus recommends that you do not use a new vehicle or a vehicle with any new
power train components (engine, transmission, differential, wheel bearings, etc.) to
tow a trailer for the first 500 miles (800 km) of driving.
■Maintenance
●If you tow a trailer, your vehicle will require more frequent maintenance due to
the additional load. (See “Warranty and Services Guide/Owner’s Manual Sup-
plement/Scheduled Maintenance”.)
●Retighten the fixing bolts of the towing ball and bracket after approximately
600 miles (1000 km) of trailer towing.

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2-5. Driving information
●Note that when making a turn, the trailer wheels will be closer than the
vehicle wheels to the inside of the turn. Compensate by making a
larger than normal turning radius.
● Crosswinds and rough roads will adversely affect handling of your
vehicle and trailer, causing sway. Periodically check the rear to prepare
for being passed by large trucks or buses, which may cause your vehi-
cle and trailer to sway. If swaying occurs, firmly grip the steering wheel,
reduce speed immediately but gradually, and steer straight ahead.
Never increase speed. If you make no extreme correction with the
steering or brakes, your vehicle and trailer will stabilize.
● Take care when passing other vehicles. Passing requires considerable
distance. After passing a vehicle, do not forget the length of your
trailer, and be sure you have plenty of room before changing lanes.
● In order to maintain efficient engine braking and electrical charging
performance, do not use overdrive. Transmission shift range position
must be in “4”.
● Due to the added load of the trailer, your vehicle’s engine may overheat
on hot days (at temperatures over 85°F [30°C] when driving up a
long or steep grade. If the engine coolant temperature gauge indicates
overheating, immediately turn off the air conditioning (if in use), pull
your vehicle off the road and stop in a safe spot. (
→P. 4 0 8 )

234
3-3. Using the rear audio system
■The rear seat entertainment system can be used when
The engine switch is in the “ACC” or “ON” position.
■Discs that can be used
Discs with the marks shown below can be used.
Playback may not be possible depending on recording format or disc features, or
due to scratches, dirt or deterioration.
■When appears on the screen
This indicates that the selected operation is not currently available.
■Error messages
DISC CHECK: Indicates that the disc is dirty, damaged or was inserted upsidedown. Clean the disc or insert it correctly.
REGION ERROR: Indicates that the DVD region code is incorrect.
DVD ERROR: Indicates that there is a problem inside the player. Eject the disc, then reinsert it. If this problem persists, see your Lexus dealer.
If the malfunction still exists, take the vehicle to your Lexus
dealer.
■Before using the remote control (for new vehicle owners)
An insulating sheet is set to prevent the bat-
teries from being discharged. Remove the
insulating sheet before using the remote con-
trol.

Maintenance and care4
305
4-1. Maintenance and care ............................... 306
Cleaning and protecting the vehicle exterior .................... 306
Cleaning and protecting the vehicle interior .................... 308 4-2. Maintenance .................... 311
Maintenance requirements.......................... 311
General maintenance ........... 313
Emission inspection and maintenance (I/M)
programs ................................ 316
4-3. Do-it-yourself maintenance ................. 317
Do-it-yourself service precautions ............................ 317
Hood .......................................... 320
Engine compartment ............ 321
Tires............................................ 336
Tire inflation pressure........... 343
Wheels ...................................... 347
Air conditioning filter ........... 349
Wireless remote control battery ..................................... 351
Rear seat entertainment system controller ................ 353
Checking and replacing fuses ........................................ 355
Light bulbs................................ 365

313
4-2. Maintenance
4
Maintenance and care
General maintenance
Engine compartment
ItemsCheck points
Battery• Maintenance-free (→P. 333)
Brake fluid• At the correct level? ( →P. 3 3 0 )
Engine coolant• At the correct level? ( →P. 3 2 8 )
Engine oil• At the correct level? ( →P. 3 2 3 )
Exhaust system• No fumes or strange sounds?
Power steering fluid• At the correct level? ( →P. 3 3 1 )
Radiator/condenser/hoses• Not blocked with foreign matter?
(→ P. 3 2 9 )
Wa s h e r f l u i d• At the correct level? ( →P. 335)
Listed below are the general maintenance items that should be performed
at the intervals specified in the “Warranty and Services Guide/Owner’s
Manual Supplement”. It is recommended that any problem you notice
should be brought to the attention of your Lexus dealer or qualified service
shop for advice.

315
4-2. Maintenance
4
Maintenance and care
Vehicle exterior
ItemsCheck points
Doors• Operate smoothly?
Engine hood• The lock system works properly?
Fluid leaks• Is there any leakage after parking?
Ti r e
• Inflation pressure is correct?
• Tire surfaces not worn or dam-aged?
• Tires rotated according to the maintenance schedule?
• Wheel nuts are not loose?
CAUTION
■If the engine is running
Turn off the engine and ensure that there is adequate ventilation before performing
maintenance checks.

323
4-3. Do-it-yourself maintenance
4
Maintenance and care
Engine oilWith the engine at operating temperature and turned off, check the oil
level on the dipstick.
■ Checking the engine oil
Park the vehicle on level ground. After turning off the engine wait
a few minutes for the oil to drain back into the bottom of the
engine.
Hold a rag under the end and pull
the dipstick out.
Wipe the dipstick clean.
Reinsert the dipstick fully.
Holding a rag under the end, pull the dipstick out and check the
oil level.
Wipe the dipstick and reinsert it fully. Low
Full
STEP1
STEP2
STEP3
STEP4
STEP5
STEP6

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4-3. Do-it-yourself maintenance
■Adding engine oil
If the oil level is below or near the
low level mark, add engine oil of
the same type as already in the
engine.
Make sure to check the oil type and prepare the items needed before
adding oil.
Remove the oil filler cap.
Add engine oil slowly, checking the dipstick.
Install the filler cap, turning it clockwise until you hear a click.
Oil gradeILSAC multigrade engine oil
Oil quantity
(Low → Full)1.6 qt. (1.5 L, 1.3 Imp. qt.)
ItemsClean funnel
STEP1
STEP2
STEP3

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4-3. Do-it-yourself maintenance
4
Maintenance and care
CAUTION
■Used engine oil
●Used engine oil contains potentially harmful contaminants which may cause skin
disorders such as inflammation or skin cancer, so care should be taken to avoid
prolonged and repeated contact. To remove used engine oil from your skin, wash
thoroughly with soap and water.
●Dispose of used oil and filters only in a safe and acceptable manner. Do not dis-
pose of used oil and filters in household trash, in sewers or onto the ground.
Call your Lexus dealer, service station or auto parts store for information con-
cerning recycling or disposal.
●Do not leave used engine oil within the reach of children.
NOTICE
■To prevent serious engine damage
Check the oil level on regular basis.
■When replacing the engine oil
●Be careful not to spill engine oil on the vehicle components.
●Avoid overfilling, or the engine could be damaged.
●Check the oil level on the dipstick every time you refill the vehicle.
●Be sure the engine oil filler cap is properly retightened.

328
4-3. Do-it-yourself maintenance
Engine coolantThe coolant level is satisfactory if it is between the “F” and “L” lines on the
reservoir when the engine is cold. Reservoir cap
Full
Low
If the level is on or below the “L”
line, add coolant up to the “F” line.
■If the coolant level drops within a short time after replenishing
Visually check the radiator, hoses, reservoir cap, radiator cap, drain cock and water
pump.
If you cannot find a leak, have your Lexus dealer pressure test the cap and check for
leaks in the cooling system.
■Coolant selection
Only use “Toyota Super Long Life Coolant” or similar high quality ethylene glycol
based non-silicate, non-amine, non-nitrite, and non-borate coolant with long-life
hybrid organic acid technology.U.S.A.: “Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50% deionized water. (Enabled: -31 °F [-35 °C])
Canada: “Toyota Super Long Life Coolant” is a mixture of 55% coolant and 45% deionized water. (Enabled: -44 °F [-42 °C])
For more details about engine coolant, contact your Lexus dealer.