brake fluid LEXUS LX470 2007 Owners Manual

93
2-1. Driving procedures
2
When driving
CAUTION
■When taking a nap in the vehicle
Always turn the engine off.
Otherwise, you may accidentally move the shift lever or press the accelerator
pedal, which could cause an accident or fire due to abnormal engine overheating.
Additionally, if the vehicle is parked in a poorly ventilated area, exhaust fumes may
enter the vehicle and cause gas poisoning.
■When braking the vehicle
●When the brakes are wet, drive more cautiously.
Braking distance increases when the brakes are wet, and may cause one side of
the vehicle to brake differently than the other side. Also the parking brake may
not securely hold the vehicle.
●If the brake assist function does not operate, do not follow other vehicles closely
and avoid downhill or sharp turns that require braking.
In this case, braking is still possible, but it will require more force on the pedal than
usual. Braking distance may also increase.
●Do not pump the brake pedal if the engine stalls.
Each push on the pedal uses up your reserved brake fluid pressure.
●The brake system consists of 2 individual hydraulic systems: if one of the systems
fails, the other will still operate. In this case, the brake pedal should be depressed
more firmly than usual and braking distance becomes longer.
Do not drive your vehicle with only a single brake system. Have your brakes fixed
immediately.

134
2-4. Using other driving systems
■If the vehicle height does not change
If the vehicle is loaded too heavily, or the undercarriage has come into contact with
the road surface, the vehicle height cannot be raised/lowered. In this case, the indi-
cator lights will change as follows:
●The current mode indicator light will turn off, and the target mode indicator light
will begin flashing.
●The target mode indicator light will turn off, and the original mode indicator light
will be lit once more. (The vehicle height does not change.)
■In the following cases AHC will not operate
●The brake pedal has been depressed for longer than 5 seconds while the vehi-
cle is stopped.
●The suspension fluid temperature is lower than -22°F (-30°C).
●Driving on bumpy roads which may cause the suspension to fully elongate.
●If the steering wheel is abruptly turned more than 3/4 of a revolution with the
center differential lock system activated.
■Cold weather operation
It may take longer for the vehicle height to change if the suspension fluid tempera-
ture drops below -5°F (-15°C).
AHC does not operate when the suspension fluid temperature drops below -22°F
(-30°C).
●In this case, the selected height mode indicator light will flash when the height
mode select switch is pressed, however the vehicle height will not change.
Once the engine has warmed the suspension fluid to within normal operating
limits, AHC will begin operating and the vehicle height will automatically
change to the selected mode.
●When the suspension fluid is around -22°F (-30°C), the vehicle height may not
be able to be raised, even if AHC is operating. In this case, push “ ▼” then “▲ ”
on the height mode select switch after further warming the engine to select the
desired vehicle height.

267
4-2. Maintenance
4
Maintenance and care
General maintenance
Engine compartment
ItemsCheck points
Battery• Maintenance-free (P. 2 8 8 )
Brake fluid• At the correct level? ( P. 2 8 4 )
Engine coolant• At the correct level? ( P. 2 8 2 )
Engine oil• At the correct level? ( P. 2 7 7 )
Exhaust system• No fumes or strange sounds?
Power steering fluid• At the correct level? (P. 2 8 6 )
Radiator/condenser/hoses • Not blocked with foreign matter?
(P. 2 8 3 )
Suspension fluid• At the correct level? ( P. 2 8 7 )
Wa s h e r f l u i d• At the correct level? ( P. 2 9 1 )
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 recomme nded that any problem you notice
should be brought to the attention of your Lexus dealer or qualified service
shop for advice.

271
4
Maintenance and care
4-3. Do-it-yourself maintenance
Do-it-yourself service precautions
If you perform maintenance yourself, be sure to follow the correct proce-
dure given in these sections.
ItemsPa r t s a n d t o o l s
Battery condition (P. 2 8 8)
•Warm water
• Baking soda
•Grease
• Conventional wrench
(for terminal clamp bolts)
Blade type fuses ( P. 3 1 1 )• Fuse with same amperage rating as
original
Brake fluid level ( P. 2 8 4 )
• FMVSS No.116 DOT 3 or SAE
J1703 brake fluid
•Rag or paper towel
• Funnel (used only for adding brake
fluid)
Cartridge type fuses ( P. 3 1 1 )
• Genuine Lexus fuse or equivalent
with same amperage rating as orig-
inal

276
4-3. Do-it-yourself maintenance
Engine compartment
Engine oil filler cap(P. 2 7 8 )
Engine oil level dipstick (P. 277)
Brake fluid reservoir (P. 2 8 4 )
Fuse box ( P. 311)
Battery ( P. 2 8 8 )Washer fluid tank
(P. 2 9 1 )
Condenser ( P. 283)
Radiator ( P. 283)
Engine coolant reservoir (P. 2 8 2 )
Power steering fluid reservoir (P. 2 8 6 )
Suspension fluid reservoir (P. 2 8 7 )

284
4-3. Do-it-yourself maintenance
Brake fluid■ Checking fluid level
The brake fluid level should be
between the “MAX” and “MIN”
lines on the tank.
Make sure to check the fluid type and prepare the necessary items.
■ Adding fluid
Fluid typeFMVSS No.116 DOT 3 or SAE J1703 brake fluid
ItemsClean funnel
■Brake fluid can absorb moisture from the air
Excess moisture in the fluid can cause a dangerous loss of braking efficiency. Use
only newly opened brake fluid.
CAUTION
■When filling the reservoir
Take care because brake fluid can harm your hands or eyes and damage painted
surfaces.
If fluid gets in your eyes, flush your eyes with clean water immediately.
If you still experience discomfort, see a doctor.

285
4-3. Do-it-yourself maintenance
4
Maintenance and care
NOTICE
■If the fluid level is low or high
It is normal for the brake fluid level to go down slightly as the brake pads wear or
when the fluid level in the accumulator is high.
If the reservoir needs frequent refilling, it may indicate a serious problem.

5
When trouble arises
333
5-1. Essential information
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably needs
adjustment or repair. Contact your Lexus dealer as soon as possible.
■Visible symptoms
●Fluid leaks under the vehicle
(Water dripping from the air conditioning after use is normal.)
● Flat-looking tires or uneven tire wear
● Engine coolant temper ature gauge needle continually points
higher than normal
● Engine oil pressure gauge continually points lower than normal
● Voltmeter continually points higher or lower than normal
■ Audible symptoms
●Changes in exhaust sound
● Excessive tire squeal when cornering
● Strange noises related to the suspension system
● Pinging or other noises related to the engine
■ Operational symptoms
●Engine missing, stumbling or running rough
● Appreciable loss of power
● Vehicle pulls heavily to one side when braking
● Vehicle pulls heavily to one side when driving on a level road
● Loss of brake effectiveness, sp ongy feeling, pedal almost touches
the floor

5
When trouble arises
337
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 vehi cle in a safe place and contact your Lexus
dealer.
*: Parking brake engaged warning buzzer:
A buzzer will sound if the vehicle is driv en at a speed of approximately 3 mph (5
km/h) or more.
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
339
5-2. Steps to take in an emergency
Have the malfunction repaired immediately.After taking the specified steps to co rrect the suspected problem, check
that the warning light turns off.
Warning lightWarning light/Details
(U.S.A.)

(Canada)
ABS warning light
Malfunction in:
•The ABS; or
• The brake assist system.
and
Vehicle stability control system and active traction control
system warning lightMalfunction in:
• The VSC system; or
• The active traction control system.
Variable gear ratio stee ring system warning light
Malfunction in the variable gear ratio steering system.
Lexus night view system warning light The bulb for the near-infrared floodlight is burned out.
Automatic transmission fluid temperature warning lightThe automatic transmission fluid temperature is too high.
Warning lightWarning light/DetailsCorrection procedure
Open door warning lightA door is not fully closed.Check that all doors are
closed.