2008 LEXUS RX400H warning light

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RX400h_U
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2-2. Instrument cluster..................... 138Gauges and meters ..................... 138
Indicators and warning lights ... 140
Multi-information display........... 143
Trip information display (without navigation
system)............................................ 146
2-3. Operating the lights and windshield wipers ................... 148
Headlight switch ............................ 148
Fog light switch ................................ 151
Windshield wipers and washer............................................. 152
Rear window wiper and washer............................................. 155
Headlight cleaner switch ........... 156
2-4. Using other driving systems.... 157 Cruise control ................................ 157
Dynamic laser cruise control ... 160
Driving assist systems.................. 169
2-5. Driving information ................... 173 Utility vehicle precautions ......... 173
Cargo and luggage ...................... 178
Vehicle load limits .......................... 181
Winter driving tips ........................ 182
Trailer towing .................................. 187
Dinghy towing ................................ 196 3-1. Using the air conditioning
system and defogger ............. 198
Automatic air conditioning system ............................................. 198
Rear window and outside rear view mirror defoggers,
and windshield wiper
de-icer ........................................... 204
3-2. Using the front audio system ....................................... 205
Audio system type ...................... 205
Using the radio.............................. 207
Using the CD player.................... 214
Playing back MP3 and WMA discs.................................. 220
Optimal use of the audio system ............................................ 228
Using the steering wheel audio switches ............................. 231
3-3. Using the rear audio system ....................................... 233
Rear seat entertainment system features .......................... 233
Using the DVD player (DVD video)................................ 239
Using the DVD player (video CD) ................................... 246
Using the DVD player (audio CD/ CD text) ............... 248
3Interior features

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RX400h_U
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Headlight aim (vehicles with discharge
headlights).................................... 364
Light bulbs ....................................... 365
5-1. Essential information .............. 378 If your vehicle needs to be towed.............................................. 378
If you think something is wrong ............................................ 385
Event data recorder................... 386
5-2. Steps to take in an emergency .............................. 388
If a warning light turns on or a warning buzzer
sounds... ....................................... 388
If a warning message is displayed...................................... 398
If you have a flat tire.................... 408
If the hybrid system will not start........................................... 418
If the shift lever cannot be shifted from P ............................... 419
If you lose your keys .................... 420
If the 12-volt battery is discharged .................................... 421
If your vehicle overheats ........... 424
If the vehicle becomes stuck ... 427 6-1. Specifications............................ 430
Maintenance data (fuel, oil level, etc.).................... 430
Fuel information............................ 442
Tire section names....................... 445
6-2. Customization .......................... 458 Customizable features ............. 458
6-3. Initialization ............................... 462 Items to initialize ........................... 462
Reporting safety defects for U.S. owners........................... 464
Seat belt instructions for Canadian owners
(in French) .................................... 465
Abbreviation list .................................. 470
Alphabetical index.............................. 472
What to do if... ...................................... 482
5When trouble arises
6Vehicle specifications
7For owners
Index

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Pictorial indexInstrument panel
Headlight switch Turn signal lever Fog light switch P. 148
P. 136
P. 151
Power back door main switch ∗ P. 45
Tilt steering lock release lever ∗ P. 65
Tilt and telescopic steering control switch ∗ P. 66
Parking brake pedal P. 137
Tire pressure warning reset switch P. 332
Hood release lever P. 313
Gauges and meters P. 138
Audio remote control switches P. 231
Glove box P. 265
Tire pressure warning select switch P. 335
Engine (ignition) switch P. 131

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1-1. Hybrid system
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Before driving
RX400h_U
■If a warning light comes on or a warning message is displayed, or the 12-volt bat-
tery is disconnected
The hybrid system may not start. In that case, try to start the system again. If the
READY light does not come on, contact your Lexus dealer.
■Emergency shut off system
The emergency shut off system blocks off the high voltage current and stops the
fuel pump to minimize the risk of the electric leakage and the fuel leakage when a
certain level of impact is detected by the impact sensor. If the system activates, your
vehicle will not restart. To restart the hybrid system, contact a Lexus dealer.
CAUTION
■High voltage precautions
The vehicle has high voltage DC and AC systems as well as a system. DC and AC
high voltage is very dangerous and can cause severe burns and electric shock that
may result in death or serious injury.
●Never touch, disassemble, remove or replace the high voltage parts, cables and
their connectors.
●The hybrid system will become hot after starting as the system uses high voltage.
Be careful of both the high voltage and the high temperature, and always obey
the caution labels attached to the vehicle.
●Never try to open the service plug access hole located in the luggage compart-
ment. The service plug is used only when the vehicle is serviced and is subject to
high voltage.

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1-3. Opening, closing and locking the doors
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Before driving
RX400h_U
■The power back door can be opened when
The engine switch is in the ON position, and the shift lever is in P.
■Jam protection function
If anything obstructs the power back door while it is closing/opening, the back door
will automatically operate in the opposite direction.
■If the power back door does not work
The back door must be initialized. To initialize, close the back door completely by
hand.
■Customization that can be configured at Lexus dealer
Settings (e.g. beep sound) can be changed. (Customizable features →P. 4 5 8 )
CAUTION
Observe the following precautions.
Falling to do so may result in death or serious injury.
■Keep the back door closed while driving
If the back door is opening, the luggage will be thrown out and exhaust gases will be
entered in the vehicle.
■When the back door is opened while parking
The open back door hides the rear lights. Other road users must be warned of the
presence of your vehicle by a warning triangle or other device.
■Operating the power back door
●Check to make sure that passengers do not have any part of their body in a posi-
tion where it could be caught or hit when the back door is being operated.
●Careful attention is needed so as not to get your fingers trapped as the back door
automatically closes when it has not been fully closed.
●Do not allow children to operate the back door.
Closing the back door on someone can cause serious injury, and in some
instances, even death.

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1-6. Refueling
RX400h_U
Closing the fuel tank capWhen replacing the fuel tank cap,
turn it until one clicking sound is
heard.
After releasing your hand, the cap
will turn slightly to the opposite
direction.
■Fuel types
Use unleaded gasoline. (91 Octane rating [Research Octane Number 96] or
higher)
■Fuel tank capacity
Approximately 17.2 gal. (65 L, 14.3 Imp. gal.)
■Open fuel filler door warning
→ P. 4 0 7
■When the fuel filler door opener is inoperable
The handle can be used to open the fuel filler
door if the fuel filler door cannot be opened
using the inside switch because the battery is
discharged or for any other reason.

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1-8. Safety information
RX400h_U
Airbag system componentsYour vehicle is equipped with ADVANCED AIRBAGS designed based
on US motor vehicle safety standards (FMVSS208). The airbag system
controls airbag deployment power for the driver and front passenger. The
driver airbag system consists of the driver seat’s position sensor etc. The
front passenger’s airbag system consists of the front passenger occupant
classification sensor etc.
The main SRS airbag system components are shown above. The SRS
airbag system is controlled by the airbag sensor assembly. The airbag
sensor assembly consists of a sa fing sensor and an airbag sensor.
Front passenger airbag
Curtain shield airbags
Side airbags
Occupant detection system
(ECU and sensors)
AIR BAG ON and AIR BAG
OFF indicator lights
SRS warning light
Driver airbag
Curtain shield airbag sensors
Side and curtain shield airbag
sensors
Driver's seat belt buckle switch
Driver's seat position sensor
Driver knee airbag
Airbag sensor assembly
Front airbag sensors
Front passenger’s seat belt
buckle switch

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1-8. Safety information
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Before driving
RX400h_UIn certain types of severe frontal or side impacts, the SRS airbag system
triggers the airbag inflators. A chemical reaction in the inflators quickly
fills the airbags with non-toxic gas to help restrain the motion of the occu-
pants.
■SRS warning light
This warning light system monitors the airbag sensor assembly, front airbag sensors,
side and curtain shield airbag sensor assemblies, curtain shield airbag sensor
assemblies, driver's seat position sensor, driver's seat belt buckle switch, front pas-
senger occupant classification system, AIR BAG ON indicator light, AIR BAG
OFF indicator light, front passenger's seat belt buckle switch, front seat belt
pretensioner assemblies, inflators, interconnecting wiring and power sources.
(
→ P. 3 8 9 )
■If the SRS airbags deploy (inflate)
●Bruising and slight abrasions may result from contact with a deploying (inflating)
SRS airbag.
●A loud noise and white powder will be emitted.
●Parts of the airbag module (steering wheel hub, airbag cover and inflator) as well
as the front seats, and parts of the front pillar and roof side rail, may be hot for sev-
eral minutes. The airbag itself may also be hot.
●The front windshield may crack.
■Operating conditions (front airbags)
●The SRS front airbags will deploy if the severity of the frontal impact is above the
designed threshold level, comparable to an approximate 15 mph (25 km/h) colli-
sion when the vehicle impacts straight into a fixed barrier that does not move or
deform.
However, this threshold velocity will be considerably higher if the vehicle strikes
an object, such as a parked vehicle or sign pole, which can move or deform on
impact, or if the vehicle is involved in an underride collision (e.g. a collision in
which the front of the vehicle “underrides”, or goes under, the bed of a truck, etc.).
●It is possible that in some collisions where the forward deceleration of the vehicle
is very close to the designed threshold level, the SRS front airbags and the seat
belt pretensioners may not activate together.