traction control Lexus GS450h 2008 Owner's Manual

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December 12, 2007 3:33 pm
CAUTION
■General precautions while driving
Driving under the influence: Never drive your vehicle when under the influence of
alcohol or drugs that have impaired your ability to operate your vehicle. Alcohol
and certain drugs delay reaction time, impair judgment and reduce coordination,
which could lead to an accident that will hurt or kill you, your occupants or others.
Defensive driving: Always drive defensively. Anticipate mistakes that other drivers
or pedestrians might make and be ready to avoid accidents.
Driver distraction: Always give your full attention to driving. Anything that distracts
the driver, such as adjusting controls, talking on a cellular phone or reading can
result in a collision with resulting death or serious injury to you, your occupants or
others.
■General precautions regarding children’s safety
Never leave children unattended in the vehicle, and never allow children to have or
use the key.
Children may be able to start the vehicle or shift the vehicle into neutral. There is
also a danger that children may injure themselves by playing with the cigarette
lighter, the windows, the moon roof, or other features of the vehicle. In addition, heat
build-up or extremely cold temperatures inside the vehicle can be fatal to children.
■Dispose of the hybrid battery (traction battery)
If your vehicle is disposed of without the hybrid battery having been removed, there
is a danger of serious electric shock if high voltage parts, cables and their connec-
tors are touched. In the event of that your vehicle must be disposed of, the hybrid
battery must be disposed of your Lexus dealer or a qualified service shop. If the
hybrid battery is not disposed of properly, they may cause electric shock that can
result in death or serious injury.
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1-1. Hybrid system
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High voltage componentsTake care when handling the hybrid system, as it contains a high voltage
system (about 650V at maximu m) as well as parts that become
extremely hot when the hybrid system is operating. Obey the caution
labels attached to the vehicle. Power control unit
Air conditioning compressor
Hybrid battery (Traction bat-
tery)
DC/DC converter
Service plug
Electric motor (Traction motor)
High voltage cables (orange
color)
Caution label
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2-1. Driving procedures
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■When starting on an incline
The hill-start assist control may operate. (→P. 200)
■For efficient use
●Put the shift lever into “D” when driving
In the “N” position, the gasoline engine operates but electricity cannot be gen-
erated. The hybrid battery (traction battery) will be discharged requiring unnec-
essary engine power to recharge.
●Drive your vehicle smoothly
Avoid abrupt acceleration and deceleration. Gradual acceleration and decel-
eration will make more effective use of the traction motor without having to use
gasoline engine power.
●Avoid repeated acceleration
Repeated acceleration consumes hybrid battery (traction battery) power,
resulting in poor acceleration. Battery power can be restored by driving with
the accelerator pedal slightly released.
●Put the shift lever into “P” when parking
In the “N” position, the hybrid battery (traction battery) does not recharge.
Leaving the shift lever in the “N” position for an extended period of the time may
discharge the hybrid battery. The vehicle cannot run if the hybrid battery is dis-
charged.
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2-1. Driving procedures
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CAUTION
■When driving the vehicle
●Do not shift the shift lever to “N” while the vehicle is moving.
Doing so may cause the engine brake not to operate properly and lead to an
accident.
●Do not turn the hybrid system off while driving.
The power steering and brake actuator will not operate properly if the hybrid sys-
tem is off.
●Use engine braking (downshift) to maintain a safe speed when driving down a
steep hill.
Using the brakes continuously may cause the brakes to overheat and lose effec-
tiveness. (→P. 1 4 4 )
●When stopped on an inclined surface, use the brake pedal and parking brake to
prevent the vehicle from rolling backward or forward and causing an accident.
●Be careful when driving on slippery surfaces, as the vehicle may spin or skid when
downshifting, rapidly accelerating, braking or turning.
●Do not adjust the position of the steering wheel, the seat, or the inside or outside
rear view mirrors while driving.
Doing so may result in a loss of vehicle control that can cause accidents that may
result in death or serious injury.
●Always check that all passengers’ arms, heads or other parts of their bodies are
not outside the vehicle, as this may result in death or serious injury.
●Do not drive in excess of the speed limit. Even if the legal speed limit permits it, do
not drive over 85 mph (140 km/h) unless your vehicle has high-speed capability
tires. Driving over 85 mph (140 km/h) may result in tire failure, loss of control and
possible injury. Be sure to consult a tire dealer to determine whether the tires on
your vehicle are high-speed capability tires or not before driving at such speeds.
●The driver should pay attention to pedestrians when the vehicle is powered only
by the electric motor (traction motor). Because there is no engine sounds, the
pedestrians may misjudge the vehicle’s movement.
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2-1. Driving procedures
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When driving
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June 19, 2008 1:15 pm
■Downshifting restrictions warning buzzer (in the “S” mode)
To help ensure safety and driving performance, downshifting operation may some-
times be restricted. In some circumstances, downshifting may not be possible even
when the shift lever is operated. (The warning buzzer will sound twice.)
■When driving with the cruise control system (or dynamic radar cruise control sys-
tem)
The engine brake will not operate in the “S” mode, even when downshifting to “5” or
“4”. (→P. 1 6 9 )
■Snow mode automatic deactivation
Snow mode is automatically deactivated if the “POWER” switch is turned to
ACCESSORY or ON mode after driving in snow mode.
■If the shift lever cannot be shifted from “P”
→P. 5 2 9
■If the indicator does not come on even after shifting the shift lever to “S”
This may indicate a malfunction in the transmission. Have the vehicle inspected by
your Lexus dealer immediately.
(In this situation, the vehicle will operate as if the shift lever is in “D”.)
■When in heavy traffic
To avoid running the hybrid battery (traction battery) down, leave the shift lever in
“D” or “S”.
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2-4. Using other driving systems
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Driving assist systems
To help enhance driving safety and performance, the following systems
operate automatically in response to various driving situations. Be aware,
however, that these systems are supplementary and should not be relied
upon too heavily when operating the vehicle.
■ ABS (Anti-lock Brake System)
Helps to prevent wheel lock when the brakes are applied suddenly, or if
the brakes are applied while driving on a slippery road surface.
■Brake assist
Generates an increased level of braking force after the brake pedal is
depressed, when the system detects a panic stop situation.
■VSC (Vehicle Stability Control)
Helps the driver to control skidding when swerving suddenly or turning on
slippery road surfaces.
■TRAC (Traction Control)
Maintains drive power and prevents the rear wheels from spinning when
starting the vehicle or accelerating on slippery roads.
■Hill-start assist control
Helps prevent the vehicle from rolling backwards when starting on an
incline or slippery slope. It operates for approximately 5 seconds at maxi-
mum.
■EPS (Electric Power Steering)
Employs an electric motor to reduce the amount of effort needed to turn
the steering wheel.
■Active stabilizer suspensi on system (if equipped)
Turns at smaller angles to maintain the stable vehicle posture.
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4-3. Do-it-yourself maintenance
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Maintenance and care
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FuseAmpereCircuit
8IG210
Multiport fuel injection system/
sequential multiport fuel injection
system, noise filter
9EFI No.210Fuel system, exhaust system
10H-LP R LWR15Headlight low beam (right)
11H-LP L LWR15Headlight low beam (left)
12D/C CUT30DOME, MPX-B
13IGCT No.37. 5Hybrid battery (traction battery)
14IGCT No.27. 5Hybrid system
15MPX-B7. 5
Power windows, door control system,
power seat, electronically controlled
brake system, combination switch,
electric tilt and telescopic steering,
gauges and meters
16DOME7. 5Interior lights, foot lights, vanity light,
gauges and meters
17ABS MAIN110Electronically controlled brake sys-
tem
18ABS MOTOR30ABS
19ABS MAIN210Electronically controlled brake sys-
tem
20F/ P M P25Fuel system
21EFI25
EFI2, multiport fuel injection system/
sequential multiport fuel injection
system
22INJ20
Multiport fuel injection system/
sequential multiport fuel injection
system
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6-1. Specifications
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Vehicle specifications
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■DOT quality grades
All passenger vehicle tires must conform to Federal Safety Require-
ments in addition to these grades. Quality grades can be found where
applicable on the tire sidewall between tread shoulder and maximum
section width.
For example: Treadwear 200 Traction AA Temperature A
■Treadwear
The treadwear grade is a comparative rating based on the wear rate of
the tire when tested under controlled conditions on a specified gov-
ernment test course.
For example, a tire graded 150 would wear one and a half (1 - 1 /2) times as
well on the government course as a tire graded 100.
The relative performance of tires depends upon the actual conditions of
their use, however, and may depart sign ificantly from the norm due to varia-
tions in driving habits, service practices and differences in road characteris-
tics and climate.
■ Traction AA, A, B, C
The traction grades, from highest to lowest, are AA, A, B and C, and
they represent the tire’s ability to stop on wet pavement as measured
under controlled conditions on specified government test surfaces of
asphalt and concrete.
A tire marked C may have poor traction performance.
Warning: The traction grade assigned to this tire is based on braking
(straight ahead) traction tests and does not include cornering (turning) trac-
tion.
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Alphabetical index
Alphabetical index
A/C ............................................................ 232
ABS............................................................ 200
ACCESSORY mode .......................... 139
Active stabilizer suspension system.................................................... 200
Adaptive variable
suspension system ............................. 199
Air conditioning system
Air conditioning filter .........................451
Automatic air conditioning system .................................................. 232
Airbags
Airbag operating conditions........... 98
Airbag precautions for your child..............................................102
Airbag warning light ........................ 492
Curtain shield airbag precautions ........................................ 105
General airbag pr ecautions ..........102
Locations of airbags............................ 95
Modification and disposal of airbags .................................................. 106
Proper driving posture ...................... 93
Side airbag precautions ...................102
Side and curtain shield airbags operating conditions ....................... 98
SRS airbags ............................................. 95
Alarm ............................................................90
Antenna ....................................................250
Anti-lock brake system ..................... 200
Armrest...................................................... 371
Ashtrays ....................................................366 Audio system
Antenna.................................................. 250
AUX adapter ...................................... 302
Cassette player .................................. 253
CD player/changer ..........................257
DVD information .............................. 285
DVD player/changer ..................... 266
DVD video/audio............................. 269
MP3/WMA disc................................262
Optimal use ..........................................297
Radio ........................................................244
Steering switches .............................. 303
Video CD ............................................... 281
Automatic headlight leveling
system ..................................................... 160
Automatic light control system........ 158
AUX adapter ......................................... 302
Back-up lights Wattage ................................................. 552
Battery 12 volt battery ...................................... 430
Checking............................................... 430
Hybrid battery
(Traction battery)...............................26
If the 12 volt battery is
discharged ........................................ 534
Preparing and checking
before winter...................................... 215
Bluetooth
®................................................. 311
Brake Fluid ...........................................................429
Parking brake........................................ 147
Brake assist .............................................200
A
B
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Alphabetical index
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Smart access system with push-button start
Antenna location....................................37
Entry function.......................................... 35
Starting the hybrid system .................................... 138
Spare tire Inflation pressure................................. 551
Spare tire................................................. 518
Spark plug ............................................... 548
Specifications .........................................544
Speedometer........................................... 148
Steering wheel Adjustment................................................73
Audio switches ...................................303
Steering wheel position
memory.................................................. 60
Storage compartment ........................359
Storage feature......................................355
Stuck
If your vehicle becomes stuck.......541
Sun visors ................................................. 362
Switch Fog light switch...................................... 161
Ignition switch....................................... 138
Light switches ....................................... 158
Mode select switch.............................143
Power door lock switch ....................50
“POWER” switch ............................... 138
Power window switch ......................... 77
Tire pressure warning reset switch ....................................... 436
Tire pressure warning select switch ...................438
Window lock switch ............................ 77
Wipers and washer switch ............. 162 Tachometer ............................................. 148
Tail lights
Switch ........................................................158
Theft deterrent system
Alarm.......................................................... 90
Immobilizer system ............................. 88
Theft prevention labels.......................... 92
Tire inflation pressure .......................... 551
Tire information Glossary ................................................ 562
Size ........................................................... 559
Tire identification number .............558
Uniform Tire Quality Grading ... 560
Tires
Chains....................................................... 216
Checking............................................... 435
Compact spare tire............................518
If you have a flat tire ............... 517, 527
Inflation pressure ................................. 551
Information ........................................... 556
Replacing ................................................ 517
Rotating tires........................................ 435
Size ............................................................. 551
Snow tires................................................ 218
Tire pressure warning system..... 435
Tools.............................................................517
Total load capacity .................................214
Touch screen.......................................... 224
Towing Dinghy towing .......................................221
Emergency towing ........................... 482
Trailer towing ...................................... 220
Traction control.....................................200T
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