brake LEXUS RX270 2014 Workshop Manual

309
2-5. Driving information
2
When driving
RX350/270_EE
CAUTION
■When the gross vehicle mass limit or maximum permissible axle capacity is
exceeded
Do not exceed the established speed limit for towing a trailer in built-up areas or
100 km/h (62 mph), whichever is the lower.
■Vehicle speed while towing
Observe the legal maximum speeds for trailer towing.
■Before descending hills or long declines
Reduce speed and downshift. However, never downshift suddenly while descend-
ing steep or long downhill grades.
■Operation of the brake pedal
Do not hold the brake pedal depressed often or for long periods of time.
Doing so may result in the brake overheating or reduce braking effects.
■To avoid accident or injury
●For vehicles with electronically modulated air suspension, set the vehicle height
to LO mode and turn off the electronically modulated air suspension to prevent
the vehicle height from automatically changing.
●Do not use cruise control when you are towing.
●Do not tow the vehicle with the compact spare tire installed.
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459
4-2. Maintenance
4
Maintenance and care
RX350/270_EE
■Where to go for maintenance service?
In order to maintain your vehicle in the best possible condition, Lexus recommends
that maintenance service operations as well as other inspections and repairs be
carried out by authorized Lexus dealers or repairers or other duly qualified and
equipped professionals. For repairs and services covered by your warranty, please
visit an authorized Lexus dealer or repairer, who will use genuine Lexus parts in
repairing any difficulties you may encounter. There can also be advantages in utiliz-
ing authorized Lexus dealers or repairers for non-warranty repairs and services, as
members of the Lexus network will be able to expertly assist you with any difficulties
you may encounter.
Your Lexus dealer or repairer, or another duly qualified and equipped professional
will perform all of the scheduled maintenance on your vehicle reliably and econom-
ically due to their experience with Lexus vehicles.
■Does your vehicle need repairs?
Be on the alert for changes in performance and sounds, and visual tip-offs that indi-
cate service is needed. Some important clues are:
●Engine missing, stumbling or pinging
●Appreciable loss of power
●Strange engine noises
●A fluid leak under the vehicle (However, water dripping from the air condition-
ing system after use is normal.)
●Change in exhaust sound (This may indicate a dangerous carbon monoxide
leak. Drive with the windows open and have the exhaust system checked imme-
diately.)
●Flat-looking tires, excessive tire squeal when cornering, uneven tire wear
●Vehicle pulls to one side when driving straight on a level road
●Strange noises related to suspension movement
●Loss of brake effectiveness, spongy feeling brake pedal, pedal almost touches
the floors, vehicle pulls to one side when braking
●Engine coolant temperature continually higher than normal
If you notice any of these clues, take your vehicle to any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional, as soon as possible.
Your vehicle may need adjustment or repair.
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463
4-3. Do-it-yourself maintenance
4
Maintenance and care
RX350/270_EE
CAUTION
The engine compartment contains many mechanisms and fluids that may move sud-
denly, become hot, or become electrically energized. To avoid death or serious injury,
observe the following precaution:
■When working on the engine compartment
●Keep hands, clothing and tools away from the moving fans and engine drive belt.
●Be careful not to touch the engine, radiator, exhaust manifold, etc. right after driv-
ing as they may be hot. Oil and other fluids may also be hot.
●Do not leave anything that may burn easily, such as paper and rags, in the engine
compartment.
●Do not smoke, cause sparks or expose an open flame to fuel or the battery. Fuel
and battery fumes are flammable.
●Be extremely cautious when working on the battery. It contains poisonous and
corrosive sulfuric acid.
●Take care because brake fluid can harm your hands or eyes and damage painted
surfaces.
If fluid gets on your hands or in your eyes, flush the affected area with clean water
immediately.
If you still experience discomfort, consult a doctor.
■When working near the electric cooling fans or radiator grille
Be sure the “ENGINE START STOP” switch is off.
With the “ENGINE START STOP” switch in IGNITION ON mode, the electric
cooling fans may automatically start to run if the air conditioning is on and/or the
coolant temperature is high. (→P. 4 7 8 )
■Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from getting
in your eyes
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464
4-3. Do-it-yourself maintenance
RX350/270_EE
NOTICE
■If you remove the air cleaner filter
Driving with the air cleaner filter removed may cause excessive engine wear due to
dirt in the air.
■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.
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467
4-3. Do-it-yourself maintenance
4
Maintenance and care
RX350/270_EE
CAUTION
■When raising your vehicle
Make sure to observe the following precautions to reduce the possibility of death or
serious injury:
●When using a floor jack, follow the instructions of the manual provided with the
jack.
●Do not use the jack that was supplied with your vehicle.
●Do not put any part of your body underneath the vehicle when it is supported
only by the floor jack.
●Always use floor jack and/or automotive jack stands on a solid, flat, level surface.
●Do not start the engine while the vehicle is supported by the floor jack.
●Stop the vehicle on level, firm ground, firmly set the parking brake and shift the
shift lever to P.
●Make sure to set the floor jack properly at the jack point.
Raising the vehicle with an improperly positioned floor jack will damage the vehi-
cle and may cause the vehicle to fall off the floor jack.
●Do not raise the vehicle while someone is in the vehicle.
●When raising the vehicle, do not place any objects on top of or underneath the
floor jack.
●Vehicles with electronically modulated air suspension:
Be sure to turn off the height control and stop the engine. Otherwise, the vehicle
height may change due to the automatic leveling function. (→P. 2 5 6 )
●Lift up the vehicle using a floor jack such as
the one shown in the illustration.
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534
5-1. Essential information
RX350/270_EE
Towing with a sling-type truck
Do not tow with a sling-type truck
to prevent body damage.
Towing with a wheel-lift type truck
From the front (2WD models)
Release the parking brake.
From the front (AWD models)
Use a towing dolly under the rear
wheels.
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536
5-1. Essential information
RX350/270_EE
Emergency towing
If a tow truck is not available in an emergency, your vehicle may be tem-
porarily towed using a cable or chain secured to the emergency towing
eyelet. This should only be attempted on hard surfaced roads for 80 km
(50 miles) at under 30 km/h (18 mph).
A driver must be in the vehicle to steer and operate the brakes. The vehi-
cle’s wheels, drive train, axles, steering and brakes must be in good condi-
tion.
Installing towing eyelets
Take out the towing eyelet. (→P. 5 7 2 )
Type A
Insert the mechanical key (→P.
27) into the groove and release
the claws. With the mechanical key
inserted, remove the eyelet cover
by pulling it towards you.
Type B
Insert the mechanical key (→P.
27) into the groove and release
the claws. With the mechanical key
inserted, remove the eyelet cover
by pulling it towards you.
STEP1
STEP2
STEP2
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538
5-1. Essential information
RX350/270_EESecurely attach a cable or chain to the towing eyelet.
Take care not to damage the vehicle body.
Enter the vehicle being towed and start the engine.
If the engine does not start, turn the “ENGINE START STOP” switch to
IGNITION ON mode.
For models with electronically modulated air suspension: Change
the vehicle height to “N” mode and end the vehicle height opera-
tion. (
→P. 2 5 6 )
Shift the shift lever to N and release the parking brake.
When the shift lever cannot be shifted: →P. 589
■While towing
If the engine is not running, the power assist for the brakes and steering will not
function, making steering and braking more difficult.
■Wheel nut wrench
Wheel nut wrench is installed in the luggage compartment. (→P. 5 7 2 )
STEP5
STEP6
STEP7
STEP8
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5
541
5-1. Essential information
When trouble arises
RX350/270_EE
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably needs
adjustment or repair. Contact any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional 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 temperature gauge needle continually points
higher 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, spongy feeling, pedal almost touches
the floor
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5
543
When trouble arises
RX350/270_EE
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 vehicle in a safe place and contact any authorized
Lexus dealer or repairer, or another duly qualified and equipped profes-
sional.
*: Parking brake engaged warning buzzer
→P. 557
Stop the vehicle immediately.
The following warning indicates the possibility of damage to the vehicle
that may lead to an accident. Immediately stop the vehicle in a safe place
and contact any authorized Lexus dealer or repairer, or another duly
qualified and equipped professional.
Warning lightWarning light/Details
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.
Warning lightWarning light/Details
Charging system warning light
Indicates a malfunction in the vehicle’s charging system
Calmly perform the following actions if any of the warning lights comes on
or flashes. If a light comes on or flashes, but then goes off, this does not nec-
essarily indicate a malfunction in the system.
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