fuel Lexus IS250 2008 Using the air conditioning system and defogger / LEXUS 2008 IS250 (OM53699U) User Guide

123
2-1. Driving procedures
2
When driving
■Shift position uses
*1: To improve fuel consumption and reduce noises, set the shift lever in the D
position for normal driving.
*2: Selecting shift ranges using S mode re stricts the upper limit of the possible
gear ranges, controls engine brakin g forces, and prevents unnecessary
upshifting.
■ Selecting a driving mode
The following patterns can be selec ted to suit current driving and
operating conditions.
Power mode
For powerful acceleration
and driving in mountainous
regions.
Normal mode
Snow mode
For accelerating and driving
on slippery road surfaces,
such as on snow.
Press “SNOW” to return to nor-
mal mode.
Shift positionFunction
PParking the vehicle or starting the engine
RReversing
NNeutral
DNormal driving*1
SS mode driving*2 ( P. 1 2 4 )

131
2-2. Instrument cluster
2
When driving
Instrument panel light controlThe brightness of the instrument panel lights can be adjusted. Darker
Brighter
Odometer and trip meter
Odometer: Displays the total distance the vehicle has been driven.
Trip meter: Displays the distance the vehicle has been driven since
the meter was last reset. Trip meters “A” and “B” can be
used to record and display different distances indepen-
dently.
Speed indicator
When the set speed is reached while driving, this ring-shaped indicator
comes on in yellow. The indicator comes on in red when the vehicle speed
reaches the dangerous range.
Fuel gauge
Displays the quantity of fuel remaining in the tank.
Odometer/trip meter and trip meter reset button
Switches between odometer and trip meter displays. Pushing and holding
the button will reset the trip meter when the trip meter is being displayed.

139
2-2. Instrument cluster
2
When driving
Multi-information display
The multi-information display presents the driver with a variety of driving-
related data, including the current outside air temperature.
●Trip information ( P. 140)
Displays driving range, fuel con-
sumption and other cruising
related information.
●Satellite switch mode display
(P. 245)
This switch is used to configure
various function settings.
●Intuitive parking assist dis-
play (if equipped)
Automatically displayed when
using intuitive parking assist.
●Dynamic radar cruise con-
trol display (if equipped)
(P. 155)
Automatically displayed when
using dynamic radar cruise con-
trol.
●Warning messages
(P. 369)
Automatically displayed when a
malfunction occurs in one of the
vehicle’s systems.

141
2-2. Instrument cluster
2
When driving
■Driving range
■ Average fuel consumption
■ Average fuel consumption after refueling
■ Current fuel consumption
■ Average vehicle speed Displays the estimated maximum distance that can
be driven with the quantity of fuel remaining.
• This distance is computed based on your average fuel
consumption. As a result, the actual distance that can
be driven may differ from that displayed.
• When only a small amount of fuel is added to the tank, the display may not be updated.
Displays the average fuel consumption since the
function was reset.
The function can be reset by pushing the “DISP” switch
for longer than one second when the average fuel con-
sumption is displayed.
Displays the average fuel consumption since the
vehicle was last refueled.
Displays the current rate of fuel consumption.
Displays the average vehicle speed since the engine
was started or the function was reset.
The function can be reset by pushing the “DISP” switch
for longer than one second when the average vehicle
speed is displayed.

179
2
When driving
2-5. Driving information
Cargo and luggage
Capacity and distributionCargo capacity depends on the to tal weight of the occupants.
(Cargo capacity) = (Total load capa city) — (Total weight of occupants)
Steps for Determining Correct Load Limit 
(1) Locate the statement “The combined weight of occupants and cargo should never exceed XXX kg or XXX lbs.” on your vehicle’s placard.
(2) Determine the combined weight of th e driver and passengers that will
be riding in your vehicle.
(3)Subtract the combined weight of the driver and passengers from XXX kg or XXX lbs.
(4)The resulting figure equals the av ailable amount of cargo and luggage
load capacity.
For example, if the “XXX” amount equals 1400 lbs. and there will be
five 150 lb. passengers in your vehi cle, the amount of available cargo
and luggage load capacity is 650 lbs. (1400  750 (5150) = 650
lbs.)
(5)Determine the combined weight of luggage and cargo being loaded
on the vehicle. That weight may no t safely exceed the available cargo
and luggage load capacity calculated in Step 4.
Take notice of the following information about storage precautions, cargo
capacity and load.
●Stow cargo and luggage in the tru nk whenever possible. Be sure
all items are secured in place.
● Be careful to keep the vehicle level. Placing the weight as far for-
ward as possible helps maintain vehicle balance.
● For better fuel economy, do not carry unnecessary weight.

274
4-1. Maintenance and care
Cleaning and protecting the vehicle exterior
■Automatic car washes
●Fold the mirrors back before washing the vehicle.
●Brushes used in automatic car washes may scratch the vehicle surface and
harm your vehicle’s paint.
■High pressure car washes
●Do not allow the nozzles of the car wash to come within close proximity of the
windows.
●Before car wash, check that the fuel filler door on your vehicle is closed prop-
erly.
■Aluminum wheels
Remove any dirt immediately by using a neutral detergent. Do not use hard brushes
or abrasive cleaners. Do not use strong or harsh chemical cleaners. Use the same
mild detergent and wax as used on the paint.
■Bumpers and side moldings
Do not scrub with abrasive cleaners.
Perform the following to protect the vehicle and maintain it in prime condi-
tion.
● Working from top to bottom, liber ally apply water to the vehicle
body, wheel wells and underside of the vehicle to remove any dirt
and dust.
Wash the vehicle body using a sponge or soft cloth, such as a
chamois.
● For hard-to-remove marks, use car wash soap and rinse thor-
oughly with water.
● Wipe away any water.
● Wax the vehicle when the waterproof coating deteriorates.
If water does not bead on a clean surface, apply wax when the vehicle
body is cool.

281
4-2. Maintenance
4
Maintenance and care
■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
latest service information. They are well informed about the operations of all
systems on your vehicle.
●Keep a copy of the repair order. It proves that the maintenance that has been
performed is under warranty coverage. If any problem should arise while your
vehicle is under warranty, your Lexus de aler will promptly take care of it.
CAUTION
■If your vehicle is not properly maintained
It could result in serious damage to the vehicle and possible serious injury or death.
■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 brai n damage. Wash your hands after han-
dling. ( P. 3 0 2 )

285
4-2. Maintenance
4
Maintenance and care
Emission inspection and maintenance (I/M) programs
Some states have vehicle emission inspection programs which include
OBD (On Board Diagnostics) checks. The OBD system monitors the oper-
ation of the emission control system.
■ If the malfunction indicator lamp comes on
The OBD system determines that a problem exists somewhere in
the emission control system. Your vehicle may not pass the I/M test
and may need to be repaired. Contact your Lexus dealer to service
the vehicle.
■ Your vehicle may not pass the I/M test:
●When the battery is disconnected or discharged
Readiness codes that are set during ordinary driving are erased.
Also, depending on your driving habits, the readiness codes may
not be completely set.
● When the fuel tank cap is loose
The malfunction indicator lamp comes on as a temporary mal-
function and your vehicle may not pass the I/M test.
■ When the malfunction indicator la mp goes off after several driv-
ing trips
The error code in the OBD system will not be cleared unless the
vehicle is driven 40 or more times.
■ If your vehicle does not pass the I/M test
Contact your Lexus dealer to prep are the vehicle for re-testing.

287
4-3. Do-it-yourself maintenance
4
Maintenance and care
CAUTION
The engine compartment contains many mechanisms and fluids that may move sud-
denly, become hot, or become electrically energized. To avoid death or serious injury,
observe the following precautions.
■When working on the engine compartment:
●Keep hands, clothing, and tools away from the moving fan and engine drive belt.
●Be careful not to touch the engine, radiator , exhaust manifold, etc. right after driv-
ing as they may be hot. Oil and other fluids may also be hot.
●Do not leave anything that may burn easi ly, such as paper or rags, in the engine
compartment.
●Do not smoke, cause sparks or expose an open flame to fuel or the battery. Fuel
and battery fumes are flammable.
●Be extremely cautious when working on the battery. It contains poisonous and
corrosive sulfuric acid.
ItemsPa r t s a n d t o o l s
Engine oil level ( P. 2 9 5 )
• “Toyota Genuine Motor Oil” or
equivalent
• Rag or paper towel, funnel (used only for adding engine oil)
Fuses ( P. 3 2 7 )• Fuse with same amperage rating as
original
Tire inflation pressure ( P. 3 1 6 )• Tire pressure gauge
• Compressed air source
Headlight aim ( P. 3 4 1 )• Phillips-head screwdriver
Radiator and condenser (P. 3 0 1 )
Wa s h e r f l u i d (P. 3 0 5 )
• Water washer fluid containing anti-
freeze (for winter use)
•Funnel

297
4-3. Do-it-yourself maintenance
4
Maintenance and care
■Recommended viscosity
SAE 5W-30 is the best choice for
good fuel economy, and good
starting in cold weather.
*: If SAE 5W-30 oil is not avail-able, SAE 10W-30 oil may be
used. However, it should be
replaced with SAE 5W-30 at
the next oil change.
■ How to read oil container labels
Some oil containers are labeled wi th ILSAC certification marks that
help you to select the proper oil.
Outside temperature