overheating Lexus IS220d 2012 Owner's Manual

153
2-1. Driving procedures
2
When driving
IS250/220d/200d_EE
CAUTION
Exhaust gases
Exhaust gases include harmful carbon monoxide (CO) that is colorless and
odorless. Inhaling exhaust gases may lead to death or a serious health haz-
ard.
If the vehicle is in a poorly ventilated area, stop the engine. In a closed
area, such as a garage, exhaust gases may collect and enter the vehicle.
This may lead to death or a serious health hazard.
The exhaust should be checked occasionally. If there is a hole or crack
caused by corrosion, damage to a joint or abnormal exhaust noise, be sure
to have the vehicle inspected and repaired by any authorized Lexus dealer
or repairer, or another duly qualified and equipped professional. Failure to
do so may allow exhaust gases to enter the vehicle, resulting in death or a
serious health hazard.
When taking a nap in the vehicle
Always turn the engine off. Otherwise, you may accidentally move the shift
lever or depress the accelerator pedal, which could cause an accident or fire
due to engine overheating. Additionally, if the vehicle is parked in a poorly
ventilated area, exhaust gases may collect and enter the vehicle, leading to
death or a serious health hazard.
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 power brake assist function does not operate, do not follow other
vehicles closely and avoid downhills 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 the reserve for the power-assisted brakes.
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.

172
2-1. Driving procedures
IS250/220d/200d_EE
NOTICE
Before driving
Fully release the parking brake.
Driving the vehicle with the parking brake set will lead to brake components
overheating, which may affect braking performance and increase brake
wear.

176
2-2. Instrument cluster
IS250/220d/200d_EE
Speed indicator display conditions and vehicle speed setting range
Vehicle speed setting range:
Right-hand drive vehicles:
Approximately 50 to 160 km/h
(Approximately 30 to 100 mph)
Left-hand drive vehicles:
Approximately 50 to 200 km/h
(Approximately 30 to 125 mph)
When the maximum speed is selected, the speed indicator comes on in red.
Tacho indicator display conditions and engine speed setting range
Engine rpm setting range:
IS250: Approximately 2000 to 6500 rpm (r/min)
IS220d and IS200d: Approximately 2000 to 5100 rpm (r/min)
When the maximum rpm is selected, the tacho indicator comes on in red.
NOTICE
To prevent damage to the engine and its components
Do not let the indicator needle of the tachometer enter the red zone, which
indicates the maximum engine speed.
The engine may be overheating if the temperature gauge is in the red zone
(H). In this case, immediately stop the vehicle in a safe place, and check
the engine after it has cooled completely. (
P. 525)

227
2-4. Using other driving systems
2
When driving
IS250/220d/200d_EE
Sounds and vibrations caused by the ABS, brake assist, VSC, TRC and hill-
start assist control systems
A sound may be heard from the engine compartment if the brake pedal is
depressed repeatedly when the engine is started or just after the vehicle
begins to move. This sound does not indicate that a malfunction has
occurred in any of these systems.
Any of the following conditions may occur when the above systems are
operating. None of these indicates that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard after the vehicle comes to a stop.
• The brake pedal may pulsate slightly when the ABS is activated.
• The brake pedal may move down slightly after the ABS is activated.
Hill-start assist control is operational when
The shift lever is in the D or S position.
The brake pedal is not depressed.
The vehicle rolls backward.
EPS operation sound
When the steering wheel operates, a motor sound (whirring sound) may be
heard. This does not indicate a malfunction.
Reduced effectiveness of EPS
The effectiveness of EPS is reduced to prevent the system from overheating
when there is frequent steering input over an extended period of time. The
steering wheel may feel heavy as a result. Should this occur, refrain from
excessive steering input or stop the vehicle and turn the engine OFF. The
system should return to normal within 10 minutes.
If the slip indicator comes on
It may indicate a malfunction in the VSC, TRC or hill start assist control
function. Contact any authorized Lexus dealer or repairer, or another duly
qualified and equipped professional.

249
2-5. Driving information
2
When driving
IS250/220d/200d_EEImportant points regarding turning
The wheels of the trailer will travel closer to the inside of the
curve than the wheels of the vehicle. To make allowance for this,
take the turns wider than you would normally.
Important points regarding stability
Vehicle movement resulting from uneven road surfaces and
strong crosswinds will affect handling. The vehicle may also be
rocked by passing buses or large trucks. Frequently check
behind when moving alongside such vehicles. As soon as such
vehicle movement occurs, immediately start to decelerate
smoothly by slowly applying the brakes. Always steer the vehi-
cle straight ahead while braking.
Passing other vehicles
Consider the total combined length of your vehicle and trailer
and ensure that the vehicle-to-vehicle distance is sufficient
before executing lane changes.
Transmission information
Refrain from driving in 6 (manual transmission) or 4 range in S
mode (automatic transmission) to maintain the effectiveness of
the engine brake and the charge performance of electrical com-
ponents.
If the engine overheats...
Towing a loaded trailer up a long steep incline in temperatures
exceeding 30C (85F) may result in the engine overheating. If
the engine coolant temperature gauge indicates that the engine is
overheating, turn the air conditioning off immediately, leave the
road and stop the vehicle in a safe place. (P. 525)
When parking the vehicle
Always place wheel chocks under the wheels of both the vehicle
and trailer. Firmly set the parking brake and shift the shift lever
to P for automatic transmissions, and 1 or R for manual trans-
missions.

250
2-5. Driving information
IS250/220d/200d_EE
CAUTION
Vehicle speed in towing
Observe the legal maximum speeds for trailer towing.
Before descending hills or long declines
Reduce speed and downshift. However, never downshift suddenly while
descending steep or long downhill grades.
Operation of the brake
Do not hold the brake pedal depressed often or for long periods.
Doing so may result in the brake overheating or reduce braking effects.
To avoid accident or injury
Do not use cruise control when you are towing.
Do not tow the vehicle with the compact spare tire installed.

373
3-7. Other interior features
3
Interior features
IS250/220d/200d_EE
CAUTION
Burns
Use caution when seating the following persons in a seat with the seat
heater on to avoid the possibility of burns:
• Babies, small children, the elderly, the sick and the disabled
• Persons with sensitive skin
• Persons who are fatigued
• Persons who have taken alcohol or drugs that induce sleep (sleeping
drugs, cold remedies, etc.)
Do not cover the seat with anything when using the seat heater.
Using the seat heater with a blanket or cushion increases the temperature
of the seat and may lead to overheating.
NOTICE
To prevent seat heater damage
Do not put unevenly weighted objects on the seat and do not stick sharp
objects (needles, nails, etc.) into the seat.
To prevent battery discharge
Turn the switches off when the engine is off.

376
3-7. Other interior features
IS250/220d/200d_EE
CAUTION
Burns
Use caution when seating the following persons in a seat with the seat
heater on to avoid the possibility of burns:
• Babies, small children, the elderly, the sick and the disabled
• Persons with sensitive skin
• Persons who are fatigued
• Persons who have taken alcohol or drugs that induce sleep (sleeping
drugs, cold remedies, etc.)
Do not cover the seat with anything when using the seat heater.
Using the seat heater with a blanket or cushion increases the temperature
of the seat and may lead to overheating.
NOTICE
To prevent seat heaters and ventilators damage
Do not put unevenly weighted objects on the seat and do not stick sharp
objects (needles, nails, etc.) into the seat.
To prevent battery discharge
Turn the switches off when the engine is off.

5
529
5-2. Steps to take in an emergency
When trouble arises
IS250/220d/200d_EE
Overheating
If you observe the following, your vehicle may be overheating.
The engine coolant temperature gauge enters the red zone or a loss of
power is experienced.
Steam is coming from under the hood.
CAUTION
To prevent an accident or injury when inspecting under the hood of your
vehicle
If steam is seen coming from under the hood, do not open the hood until
the steam has subsided. The engine compartment may be very hot, caus-
ing serious injury such as burns.
Keep hands and clothing away from the fans and other belts while the
engine is running.
Do not loosen the radiator cap (IS250), or the coolant reservoir cap
(IS220d and IS200d) while the engine and radiator are hot.
Serious injury, such as burns, may result from hot coolant and steam
released under pressure.
Add engine coolant if neces-
sary.
Water can be used in an
emergency if engine coolant
is unavailable.
(P. 5 4 4)
Have the vehicle checked at the nearest authorized Lexus dealer
or repairer, or another duly qualified and equipped professional,
as soon as possible.
STEP5

564
Alphabetical index
IS250/220d/200d_EE
Back-up lights
Replacing light bulbs ............453
Wattage .................................552
Battery
Checking ...............................415
If the vehicle has a discharged
battery.................................524
Preparing and checking before
winter .................................239
Bluetooth
® audio* .....................308
Bluetooth® phone* ....................323
Bottle holders ............................360
Brake
Parking brake ........................171
Brake assist................................224
Care
Exterior .................................388
Interior ..................................392
Seat belts...............................393
Cargo hooks ..............................384
CD changer*..............................273
CD player* ................................273
Chains ........................................239
Child restraint system
Baby seats, definition ...........121
Baby seats, installation .........130
Child seats, definition ...........121
Child seats, installation.........130
Installing CRS with ISOFIX
rigid anchor ........................134
Installing CRS with seat belts ....
131
Installing CRS with top straps ....
134Junior seats, definition ......... 121
Junior seats, installation....... 130
Child safety
Airbag precautions............... 116
Battery precautions ...... 419, 527
Child restraint system .......... 121
Child-protectors ..................... 59
How your child should wear
the seat belt.......................... 77
Installing child restraints ..... 130
Moon roof precautions........... 92
Power window lock switch .... 85
Power window precautions.... 88
Removed electronic key battery
precautions ........................ 436
Seat belt comfort guide .......... 75
Seat belt precautions .............. 77
Seat heater precautions 373, 376
Trunk precautions .................. 65
Child-protectors .......................... 59
Cigarette lighter ........................ 369
Cleaning
Exterior ................................ 388
Interior ................................. 392
Seat belts .............................. 393
Clock ........................................ 364
Coat hooks ................................ 381
Condenser ................................. 415
Console box .............................. 356
Cooling system
Engine overheating .............. 528
Cornering assist sensors ........... 217
B
C