2009 Lexus GS450h BRAKE WARNING LIGHT

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GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
2-1. Driving proceduresDriving the vehicle ........................ 138
Power (ignition) switch ............... 148
Transmission ................................... 152
Turn signal lever ............................ 156
Parking brake ................................. 157
Horn.................................................... 158
2-2. Instrument cluster Gauges and meters ..................... 159
Indicators and warning lights............................... 163
Multi-information display ........... 166
2-3. Operating the lights and windshield wipers
Headlight switch ............................ 169
Fog light switch ............................... 172
Windshield wipers and washer............................................. 173
Headlight cleaner switch ........... 178 2-4. Using other driving systems
Cruise control ................................ 179
Dynamic radar cruise control............................................. 183
Intuitive parking assist ................. 195
Rear view monitor system ......... 210
AVS (Adaptive Variable Suspension System) .................. 213
Driving assist systems.................. 214
PCS (Pre-Collision System) ............ 221
2-5. Driving information Cargo and luggage ..................... 227
Vehicle load limits......................... 231
Winter driving tips ....................... 232
Trailer towing ................................. 236
Dinghy towing ............................... 237
2When driving
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When driving2
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GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
2-1. Driving proceduresDriving the vehicle.................. 138
Power (ignition) switch .......... 148
Transmission.............................. 152
Turn signal lever ....................... 156
Parking brake ........................... 157
Horn ............................................ 158
2-2. Instrument cluster Gauges and meters ................ 159
Indicators and warning lights ........................ 163
Multi-information display ..... 166 2-3. Operating the lights and
windshield wipers
Headlight switch ...................... 169
Fog light switch ......................... 172
Windshield wipers and washer ..................................... 173
Headlight cleaner switch ..... 178
2-4. Using other driving systems
Cruise control........................... 179
Dynamic radar cruise control ..................................... 183
Intuitive parking assist ........... 195
Rear view monitor system .... 210
AVS (Adaptive Variable Suspension System) ............ 213
Driving assist systems ............ 214
PCS (Pre-Collision System) ...... 221
2-5. Driving information Cargo and luggage ............... 227
Vehicle load limits ................... 231
Winter driving tips ................. 232
Trailer towing .......................... 236
Dinghy towing......................... 237
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2-4. Using other driving systems
GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
Example of follow-up cruising
When following a vehicle driving slower than the set speed
The system continues follow-up cruising while adjusting for changes in the
speed of the vehicle ahead in order to maintain the vehicle-to-vehicle dis-
tance set by the driver.
Example of acceleration
When there are no longer vehicles driving slower than the set speed in
the lane ahead
When the vehicle ahead of you executes a lane change, the system slowly
accelerates until the set vehicle speed is reached. The system then returns to
fixed speed cruising.
Approach warningWhen your vehicle is too close to a vehicle ahead, and sufficient auto-
matic deceleration via the cruise control is not possible, the display will
flash and a buzzer will sound to alert the driver. An example of this would
be if another driver cuts in front of you while you are following a vehicle.
Apply the brakes to ensure an appropriate vehicle-to-vehicle distance.
■Warning lights and messages for dynamic radar cruise control
Warning lights, messages and buzzers are used to indicate a system malfunction or
to inform the driver of the need for caution while driving. ( →P. 5 2 1 )
■Switching modes
The mode cannot be switched to constant speed control mode if vehicle-to-vehicle
distance control mode has been used. The mode also cannot be switched from
constant speed control to vehicle-to-vehic le control mode. Turn the system off by
pressing the “ON-OFF” button, and turn it on again.
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2-4. Using other driving systems
GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
■Conditions that may trigger the system even if there is no danger of collision
●When there is an object by the roadside at the entrance to a curve
●When passing an oncoming vehicle on a curve
●When driving over a narrow iron bridge
●When there is a metal object on the road surface
●When driving on an uneven road surface
●When passing an oncoming vehicle on a left-turn
●When your vehicle rapidly closes on the vehicle in front
When the system is activated in the situations described above there is also a possi-
bility that the seat belts will retract quickly and the brakes will be applied with a force
greater than normal. When the seat belt is locked in the retracted position, stop the
vehicle in a safe place, release the seat belt and refasten.
■When there is a malfunction in the system
Warning lights and/or warning messages will turn on or flash. ( →P. 511, 521)
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GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
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 your Lexus
dealer.
*1: Parking brake engaged warning buzzer:
→ P. 5 2 5
Stop the vehicl e 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 your Lexus dealer.
Warning lightWarning light/Details
(U.S.A.)

(Canada)
Brake system warning light (warning buzzer) *1
•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 lightMalfunction in the vehicle’s charging system.
Calmly perform the following actions if any of the warning lights turn on or
flash. If a light turns on or flashes, but then turns off, this does not necessar-
ily indicate a malfunction in the system.
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When trouble arises
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5-2. Steps to take in an emergency
GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
Have the vehicle inspected immediately.
Failure to investigate the cause of the following warnings may lead to the
system operating abnormally and possibly cause an accident. Have the
vehicle inspected by your Lexus dealer immediately.
Warning lightWarning light/Details
(U.S.A.)

(Canada)
Malfunction indicator lamp Malfunction in:
• The emission control system;
• The electronic engine control system;
• The hybrid system;
• The electronic throttle control system; or
• The transmission control system.
SRS warning light
Malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system.
(U.S.A.)

(Canada)
ABS warning lightMalfunction in:
•The ABS; or
• The brake assist system.
ECB (Electronically controlled brake system) warning light Malfunction in the electronically controlled brake system.
Electric power steering system warning light
Malfunction in the EPS.
“PCS” warning light (if equipped)Malfunction in the pre-collision system.
Slip indicatorMalfunction in the Enhanced VSC.
The indicator will blink when Enhanced VSC, TRAC or hill-
start assist control is operational. ( →P. 2 1 5 )
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5-2. Steps to take in an emergency
GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
■If the tire pressure warning light comes on after blinking for 1 minute frequently
If the tire pressure warning light comes on after blinking for 1 minute frequently
when the “POWER” switch is turned to ON mode, have it checked by your Lexus
dealer.
CAUTION
■If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could cause loss of
vehicle control and result in death or serious injury.
●Vehicles with standard tires:
• Stop your vehicle in a safe place as soon as possible. Adjust the tire inflationpressure immediately.
• If the tire pressure warning light comes on even after tire inflation pressure
adjustment, it is probable that you have a flat tire. Check the tires. If the tire is
flat, change to the spare tire and have the flat tire repaired by the nearest
Lexus dealer.
• Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could lose control of the steering wheel or the brakes.
●Vehicles with run-flat tires:
• Decelerate to the lowest appropriate speed as soon as possible. Do not drive
over 55 mph (90 km/h).
• Check and adjust the tire inflation pressure immediately.
• If the tire pressure warning light comes on even after tire inflation pressure adjustment, it is probable that you have a flat tire. Have the tire replaced by
the nearest Lexus dealer.
• Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you
could lose control of the steering wheel or the brakes.
■If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.
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GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
Alphabetical index
Alphabetical index
A/C ............................................................248
ABS.............................................................. 214
ACCESSORY mode .......................... 149
Active stabilizer suspension system...................................................... 214
Adaptive variable
suspension system ............................. 213
Air conditioning system
Air conditioning filter .......................469
Automatic air conditioning system .................................................. 248
Airbags
Airbag operating conditions......... 106
Airbag precautions for your child............................................... 110
Airbag warning light ........................... 511
Curtain shield airbag precautions ...........................................113
General airbag pr ecautions ........... 110
Locations of airbags.......................... 103
Modification and disposal of airbags .....................................................114
Proper driving posture ...................... 101
Side airbag precautions .................... 110
Side and curtain shield airbags operating conditions ..................... 106
SRS airbags ........................................... 103
Alarm ............................................................98
Antenna .................................................... 267
Anti-lock brake system ....................... 214
Armrest.................................................... 388
Ashtrays ................................................... 383
Audio input ............................................... 319 Audio system
Antenna...................................................267
Audio input............................................. 319
Cassette player ...................................270
CD player/changer .......................... 274
DVD information .............................. 302
DVD player/changer ..................... 283
DVD video/audio............................. 286
MP3/WMA disc................................279
Optimal use ........................................... 314
Portable music player ....................... 319
Radio ......................................................... 261
Steering switches .............................. 320
Video CD ............................................. 298
Automatic headlight leveling system ....................................................... 171
Automatic light control system.........169
Back-up lights Wattage ..................................................573
Battery 12 volt battery .......................................447
Checking................................................447
Hybrid battery
(Traction battery)...............................28
If the 12 volt battery is
discharged ........................................ 553
Preparing and checking
before winter..................................... 232
Bluetooth
®.............................................. 328
Brake Fluid .......................................................... 446
Parking brake........................................ 157
Brake assist ...............................................214
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