warning LEXUS RX400H 2008 Owner's Manual

163
2-4. Using other driving systems
2
When driving
RX400h_U
Driving in vehicle-to-vehicle distance control mode
This mode employs a laser radar sensor to detect the presence of vehi-
cles within 400 ft. (120 m) ahead and to judge the distance between your
vehicle and those vehicles.
Note that vehicle-to-vehicle distance will close when traveling on long
downhill slopes.
Example of constant speed cruising (when there are no vehicles
ahead):
When set to 62 mph (100 km/h)
The vehicle travels at the speed set by the driver. The desired vehicle-to-vehi-
cle distance can also be set by operating the vehicle-to-vehicle distance
switch.
Example of deceleration cruising (when the vehicle ahead is driving
slower than the set speed):
When fixed speed cruising is set at 62 mph (100 km/h) and the vehicle
ahead is driving at 50 mph (80 km/h)
When a vehicle is detected running ahead of you, in the same lane, the sys-
tem automatically decelerates your vehicle. When a greater reduction in
vehicle speed is necessary, the system applies the brakes. A warning tone
warns you when the system cannot decelerate sufficiently to prevent your
vehicle from closing on the vehicle ahead.

164
2-4. Using other driving systems
RX400h_UExample of follow-up cruising (when following a vehicle driving slower
than the set speed):
When the speed is set to 62 mph (100 km/h) and the vehicle ahead is
driving at 50 mph (80 km/h)
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 speed is set to 62 mph (100 km/h) and the vehicle ahead
driving at 50 mph (80 km/h) is out of the lane
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.
■Fine adjustment of the set speed
Adjustment of the set speed by the following speed can be made by lightly pressing
the lever up or down and releasing it.
In the constant speed control mode: Approximately 1.0 mph (1.6 km/h)
In the vehicle-to-vehicle distance control mode: U.S.A.: Approximately 5 mph (8 km/h)
Canada: Approximately 3 mph (5 km/h)
■Dynamic laser cruise control warning lights, display and buzzers
Warning lights, display and buzzers are used to indicate a system malfunction or to
alert you to the need for caution while driving. ( →P. 3 9 8 )
■The dynamic laser cruise can be set when
●The shift lever is in D.
●Vehicle speed is between approximately 27 mph (45 km/h) and 85 mph (135
km/h).
■Accelerating
The vehicle can be accelerated normally.

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2-4. Using other driving systems
RX400h_U
CAUTION
■When the slip indicator flashes and a warning buzzer sounds
This situation occurs immediately while VSC is activated. Always drive carefully.
Reckless driving may cause an accident. Exercise particular care when the indica-
tor light flashes and a buzzer sounds.
■Replacing tires
Make sure that all tires are of the same size, brand, tread pattern and total load
capacity. In addition, make sure that the tires are inflated to the recommended tire
pressure level.
The ABS and VSC systems will not function correctly if different tires are fitted on
the vehicle.
Contact your Lexus dealer for further information when replacing tires or wheels.
■Handling of tires and suspension
Using tires with any kind of problem or modifying the suspension will affect the
VDIM, and may cause the system to malfunction.

206
3-2. Using the front audio system
RX400h_U
■Using cellular phones
Interference may be heard through the audio system’s speakers if a cellular phone is
being used inside or close to the vehicle while the audio system is operating.
CAUTION
■For vehicles sold in U.S.A. and Canada
●Pa r t 1 5 o f t h e F CC R u l e s
FCC Warning:
Any unauthorized changes or modifications to this equipment will void the user’s
authority to operate this device.
●Laser products
• Do not take this unit apart or attempt to make any changes yourself. This is an intricate unit that uses a laser pickup to retrieve information from the
surface of compact discs. The laser is carefully shielded so that its rays remain
inside the cabinet. Therefore, never try to disassemble the player or alter any of
its parts since you may be exposed to laser rays and dangerous voltages.
• This product utilizes a laser. Use of controls or adjustments or perf ormance of procedures other than those
specified herein may result in hazardous radiation exposure.
NOTICE
■To prevent 12-volt battery discharge
Do not leave the audio system on longer than necessary with the hybrid system off.
■To avoid damaging the audio system
Take care not to spill drinks or other fluids over the audio system.

291
3-6. Other interior features
3
Interior features
RX400h_U
■Before programming
●Install a new battery in the transmitter.
●The battery side of the transmitter must be pointed away from the HomeLink.
■Certification for the garage door opener
This device complies with Part 15 of the FCC Rules and with RSS-210 of the IC
Rules.
Operation is subject to the following two conditions: (1) This device may not cause
harmful interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
WARNING: This transmitter has been tested and complies with FCC and IC rules.
Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the device.
CAUTION
■When programming a garage door or other remote control device
The garage door may operate, so ensure people and objects are out of danger to
prevent potential harm.
■Conforming to federal safety standards
Do not use the HomeLink
 Compatible Transceiver with any garage door opener
or device that lacks safety stop and reverse features as required by federal safety
standards.
This includes any garage door that cannot detect an obstruction object. A door or
device without these features increases the risk of death or serious injury.

305
4-2. Maintenance
4
Maintenance and care
RX400h_U
■Allow inspection and repairs to be performed by a Lexus dealer
●Lexus technicians are well-trained specialists and are kept up to date with the lat-
est service information. They are well informed about the operations of all sys-
tems on your vehicle.
●Keep a copy of the repair order. It proves that the maintenance that has been per-
formed is under warranty coverage. If any problem should arise while your vehi-
cle is under warranty, your Lexus dealer will promptly take care of it.
CAUTION
■Warning in handling of battery
●Engine exhaust, some of its constituents, and a wide variety of automobile com-
ponents contain or emit chemicals known to the State of California to cause can-
cer and birth defects and other reproductive harm. Work in a well ventilated area.
●Oils, fuels and fluids contained in vehicles as well as waste produced by compo-
nent wear contain or emit chemicals known to the State of California to cause
cancer and birth defects or other reproductive harm. Avoid exposure and wash
any affected area immediately.
●Battery posts, terminals and related accessories contain lead and lead com-
pounds which are known to cause brain damage. Wash your hands after han-
dling. (→P. 3 2 7 )

325
4-3. Do-it-yourself maintenance
4
Maintenance and care
RX400h_U
Radiator and condenserCheck the radiator and condenser and clear any foreign objects.
If either of the above parts are extremely dirty or you are not sure of their
condition, have your vehicle checked by your Lexus dealer.
Brake fluid■ Checking fluid level
The brake fluid level should be between the MAX and MIN lines on
the tank.
MAX
MIN
If the level is low, take your vehicle
to a Lexus dealer as soon as possi-
ble. Do not drive your vehicle if the
red brake system warning light is
on. Call a Lexus dealer for assis-
tance.
Make sure to check the fluid type.
CAUTION
■When the engine is hot
Do not touch the radiator or condenser, as they may be hot and you may be burned.

329
4-3. Do-it-yourself maintenance
4
Maintenance and care
RX400h_U
Washer fluidIf any washer does not work or the
low washer fluid warning light
comes on, the washer tank may be
empty. Add washer fluid.
CAUTION
■Emergency measures regarding electrolyte
●If electrolyte gets on your skin
Wash the affected area thoroughly. If you feel pain or burning, get medical atten-
tion immediately.
●If electrolyte gets on your clothes
It can soak through clothing on to your skin. Immediately take off the clothing and
follow the procedure above if necessary.
●If you accidentally swallow electrolyte
Drink a large quantity of water or milk. Follow with milk of magnesia, beaten raw
egg or vegetable oil. Get emergency medical attention immediately.
■When replacing the 12-volt battery
Use a 12-volt battery designed for the RX400h. Failure to do so may cause gas
(hydrogen) to enter the passenger compartment, causing a fire or explosion.
For replacement of the 12-volt battery, contact your Lexus dealer.
NOTICE
■When recharging the 12-volt battery
Never recharge the 12-volt battery while the hybrid system is running. Also, be sure
all accessories are turned off.

331
4-3. Do-it-yourself maintenance
4
Maintenance and care
RX400h_U
Tires
Replace or rotate tires in accordance with maintenance schedules and
treadwear.
■Checking tires
New tread
Treadwear indicator
Worn tread
The location of treadwear indi-
cators is shown by the “TWI” or
“∆ ” marks, etc., molded on the
sidewall of each tire.
Check spare tire condition and
inflation pressure if not rotated.
■ Tire rotation
Rotate the tires in the order
shown.
To equalize tire wear and extend
tire life, Lexus recommends that
tire rotation is carried out at the
same interval as tire inspection.
■The tire pressure warning system
Your Lexus is equipped with a tire pressure warning system that uses
tire pressure warning valves and transmitters to detect low tire infla-
tion pressure before serious problems arise. ( →P. 391, 398)
Front

332
4-3. Do-it-yourself maintenance
RX400h_U
Installing tire pressure warning valves and transmitters
When replacing tires or wheels, tire pressure warning valves and trans-
mitters must also be installed.
When new tire pressure warning valves and transmitters are installed,
new tire pressure warning valve and transmitter ID codes must be regis-
tered in the tire pressure warning computer and tire pressure warning
system must be initialized. Have tire pressure warning valve and transmit-
ter ID codes registered by your Lexus dealer. ( →P. 3 3 4 )
Initializing the tire pressure warning system
■ The tire pressure warning system must be initialized in the following
circumstances:
● When changing the tire inflation pressure by changing traveling
speed.
● When changing the tire size.
When the tire pressure warning system is initialized, the current tire
inflation pressure is set as the pressure benchmark.