system Lexus IS F 2011 Owner's Manual

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3-5. Using the interior lights
Interior lights list
Your Lexus is equipped with the illuminated entry system to assist in
entering the vehicle. Owing to the function of the system, the lights
shown in the following illustration automatically turn on/off according
to the presence of the electronic key, whether the doors are locked/
unlocked, whether the doors are opened/closed, and the “ENGINE
START STOP” switch mode.
Front personal lights (P. 323)
Shift lever light (when the “ENGINE START STOP” switch
is in ACCESSORY or IGNITION ON mode)
Front overhead courtesy light
Front interior lights (P. 322)
Rear personal lights (P. 323)
Rear overhead courtesy light
Rear interior light

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3-7. Other interior features
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Change the settings.
Press the “ON/OFF” button
to change the settings (e.g.
on/off).
Items that can be set using the satellite switches
STEP3
Intrusion sensor (P. 97) on/off
Lexus parking assist-sensor (P. 199) on/off
(if equipped)
Daytime running light system (P. 173) on/
off
Pre-crash braking function (P. 213) on/off
(if equipped)

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4-1. Maintenance and care
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Maintenance and care
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NOTICE
Cleaning detergents
Do not use organic substances such as benzene or gasoline, acidic or alka-
line solutions, dye, bleach or other detergent. Doing so may discolor the
vehicle interior or cause streaks or damage to painted surfaces.
Do not use polish wax or polish cleaner. The instrument panel's or other
interior part’s painted surface may be damaged.
Preventing damage to leather surfaces
Observe the following precautions to avoid damage to and deterioration of
leather surfaces.
Remove any dust or dirt on leather surfaces immediately.
Do not expose the vehicle to direct sunlight for extended periods of time.
Park the vehicle in the shade, especially during summer.
Do not place items made of vinyl, plastic, or that contain wax on the
upholstery, as they may stick to the leather surface if the vehicle interior
heats up significantly.
Water on the floor
Do not wash the vehicle floor with water.
Vehicle systems such as the audio system may be damaged if water comes
into contact with electrical components under the floor of the vehicle, and
may also cause the body to rust.
Cleaning the inside of the rear window
Do not use glass cleaner to clean the rear window, as this may cause dam-
age to the rear window defogger heater wires or antenna. Use a cloth
dampened with lukewarm water to gently wipe the window clean. Wipe
the window in strokes running parallel to the heater wires or antenna.
Be careful not to scratch or damage the heater wires or antenna.

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4-2. Maintenance
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Where to go for service?
In order to maintain your vehicle in the highest possible condition, Lexus
recommends that all repairs and service operations be carried out by autho-
rized Lexus dealers or repairers or other duly qualified and equipped profes-
sionals. For repairs and services covered by your warranty, please visit an
authorized Lexus dealer or repairer, who will use genuine Lexus parts in
repairing any difficulties you may encounter. There can also be advantages
in utilizing authorized Lexus dealers or repairers for non-warranty repairs
and services, as members of the Lexus network will be able to expertly
assist you with any difficulties you may encounter.
Any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional service department will perform all of the scheduled
maintenance on your vehicle - reliably and economically due to their experi-
ence with Lexus vehicles.
Does your vehicle need repair?
Be on the alert for changes in performance and sounds, and visual tip-offs
that indicate service is needed. Some important clues are:
Engine missing, stumbling, or pinging
Appreciable loss of power
Strange engine noises
A fluid leak under the vehicle (However, water dripping from the air
conditioning after use is normal.)
Change in exhaust sound (This may indicate a dangerous carbon monox-
ide leak. Drive with the windows open and have the exhaust system
checked immediately.)
Flat-looking tires, excessive tire squeal when cornering, uneven tire
wear
Vehicle pulls to one side when driving straight on a level road
Strange noises related to suspension movement
Loss of brake effectiveness, spongy feeling brake pedal, pedal almost
touches the floor, vehicle pulls to one side when braking
Engine coolant temperature continually higher than normal
If you notice any of these clues, take your vehicle to any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional, as
soon as possible. Your vehicle may need adjustment or repair.

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4-3. Do-it-yourself maintenance
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Maintenance and care
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If the coolant level drops within a short time after replenishing
Visually check the radiator, hoses, coolant reservoir cap, drain cock and
water pump.
If you cannot find a leak, have any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional, test the cap and check for
leaks in the cooling system.
Coolant selection
Only use “Toyota Super Long Life Coolant” or similar high-quality eth-
ylene glycol-based non-silicate, non-amine, non-nitrite, and non-borate
coolant with long-life hybrid organic acid technology.
“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50%
deionized water. (Enabled: -35C [-31F])
For more details about engine coolant, contact any authorized Lexus dealer
or repairer, or another duly qualified and equipped professional.
CAUTION
When the engine is hot
Do not remove the coolant reservoir cap.
The cooling system may be under pressure and may spray hot coolant if the
cap is removed, causing serious injuries, such as burns.
NOTICE
When adding engine coolant
Coolant is neither plain water nor straight antifreeze. The correct mixture of
water and antifreeze must be used to provide proper lubrication, corrosion
protection and cooling. Be sure to read the antifreeze or coolant label.
If you spill coolant
Be sure to wash it off with water to prevent damage to parts or paint.

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4-3. Do-it-yourself maintenance
IS F_EEAdding distilled water
Remove the vent plug.
Add distilled water.
If the “UPPER LEVEL” line cannot be seen, check the fluid level
by looking directly at the cell.
Put the vent plug back on and close securely.
Lo O.K
Before recharging
When recharging, the battery produces hydrogen gas which is flammable
and explosive. Therefore, before recharging:
If recharging with the battery installed on the vehicle, be sure to discon-
nect the ground cable.
Make sure the power switch on the charger is off when connecting and
disconnecting the charger cables to the battery.
After recharging/reconnecting the battery
In some cases, the engine may not start. Follow the procedure below to ini-
tialize the system.
Shift the shift lever to P, and turn the “ENGINE START STOP”
switch OFF.
Open and close any of the doors.
Start the engine. (If the engine does not start first time, repeat the
procedure.)
If the engine will not start even after multiple attempts at the above method,
contact any authorized Lexus dealer or repairer, or another duly qualified
and equipped professional.
STEP1
STEP2
STEP3
STEP1
STEP2
STEP3

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4-3. Do-it-yourself maintenance
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Maintenance and care
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The air conditioning filter must be cleaned or changed regularly to
maintain air conditioning efficiency.
Removal method
Set the air conditioning system to recirculated mode.
(P. 228)
The air conditioning filter case cannot be removed with the
system in the outside air mode.
Turn the “ENGINE START STOP” switch to OFF.
Open the glove box. Lift and
remove the partition.
Remove the filter cover.
Remove the filter case.
STEP1
STEP2
STEP3
STEP4
STEP5

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NOTICE
To prevent damage to the system
When using the air conditioning system, make sure that a filter is always
installed.
When cleaning the filter, do not clean the filter with water.

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4-3. Do-it-yourself maintenance
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Maintenance and care
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If the electronic key battery is discharged
The following symptoms may occur.
The smart entry & start system and wireless remote control will not
function properly.
The operational range is reduced.
Use a CR1632 lithium battery
Batteries can be purchased at any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional, jewelers, or camera
stores.
Replace only with the same or equivalent type recommended by any
authorized Lexus dealer or repairer, or another duly qualified and
equipped professional.
Dispose of used batteries according to the local laws.
When the card key battery needs to be replaced (if equipped)
The battery for the card key is available only at Lexus dealers. Your Lexus
dealer can replace the battery for you.
CAUTION
Removed battery and other parts
Keep away from children. These parts are small and if swallowed by a child,
they can cause choking. Failure to do so could result in death or serious
injury.
Certification for the smart entry & start system
RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCOR-
RECT TYPE. DISPOSE OF USED BATTERIES ACCORDING TO THE
INSTRUCTIONS.

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4-3. Do-it-yourself maintenance
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Engine compartment (type B fuse box)
Push the tabs in and lift the
lid off.
Driver’s side instrument panel
Remove the lid.
Passenger’s side instrument panel
Remove the lid.
After a system failure, see “Fuse layout and amperage
ratings” (P. 397) for details about which fuse to check.
STEP4