2010 Lexus IS F check engine

380
4-3. Do-it-yourself maintenance
10_IS F_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.
CAUTION
■When the engine is hot
Do not touch the radiator or condenser, as they may be hot and you may be burned.

408
4-3. Do-it-yourself maintenance
10_IS F_U
Checking and replacing fuses
If any of the electrical components do not operate, a fuse may have blown.
If this happens, check and replace the fuses as necessary.
Turn the “ENGINE START STOP” switch to OFF.
Engine compartment (type B): Remove the engine compart-
ment cover. (→P. 373)
Open the fuse box cover.
Engine compartment (type A)
Push the tabs in and lift the lid
off.
Engine compartment (type B) Push the tabs in and lift the lid
off.STEP1
STEP2
STEP3

422
4-3. Do-it-yourself maintenance
10_IS F_U
Headlight aim
■Removing the engine compartment cover.
→ P. 3 7 3
■ Vertical movement adjusting bolts
Adjustment bolt A
Adjustment bolt B
■ Before checking the headlight aim
Make sure the vehicle has a full tank of gas and the area around
the headlight is not deformed.
Park the vehicle on level ground.
Sit in the driver’s seat.
Bounce the vehicle several times.
■ Adjusting the headlight aim
Turn bolt A in either direction
using a Phillips-head screw-
driver.
Remember the turning direction
and the number of turns.
STEP1
STEP2
STEP3
STEP4
STEP1

5
When trouble arises
447
5-2. Steps to take in an emergency
10_IS F_U
■If the tire pressure warning system is inoperative
The tire pressure warning system will be disabled in the following conditions:
(When the condition becomes normal, the system will work properly.)
●If tires not equipped with tire pressure warning valves and transmitters are used.
●If the ID code on the tire pressure warning valves and transmitters is not regis-
tered in the tire pressure warning computer.
●If a different set of tires has been selected using the satellite switch.
●If the tire inflation pressure is 73 psi (500 kPa, 5.1 kgf/cm2 or bar) or higher.
●If electronic devices or facilities using similar radio wave frequencies are nearby.
●If a radio set at similar frequencies is in use in the vehicle.
●If there is a lot of snow or ice on the vehicle, in particular, around the wheels or
wheel housings.
●If non-genuine Lexus wheels are used. (Even if you use Lexus wheels, the tire
pressure warning system may not work properly with some types of tires.)
■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 “ENGINE START STOP” switch is turned to IGNITION ON mode, have
it checked by your Lexus dealer.
■Customization that can be configured at Lexus dealer
The vehicle speed linked seat belt reminder buzzer can be disabled.
(Customizable features →P. 5 1 4 )

5
When trouble arises
457
5-2. Steps to take in an emergency
10_IS F_U
Wa r n i n g m e s s a g eDetailsCorrection procedure
Indicates that the washer
fluid level is low.Add washer fluid.
Indicates that engine oil
level is low.
Check the level of engine
oil, and add if necessary.This message may
appear if the vehicle is
stopped on a slope.
Move the vehicle to a
level surface and check
to see if the message dis-
appears.
(U.S.A. only)
Indicates that the engine
oil is scheduled to be
changed.
Check the engine oil, and
change if necessary.
Comes on approximately
4500 miles (7200 km)
after the engine oil is
changed. (The indicator
will not work properly
unless the oil mainte-
nance data has been
reset.)

458
5-2. Steps to take in an emergency
10_IS F_U
Wa r n i n g m e s s a g eDetailsCorrection procedure
(U.S.A. only)
Indicates that the engine
oil should be changed.
Check and change the
engine oil.
Comes on approximately
5000 miles (8000 km)
after the engine oil is
changed (and the oil
maintenance data has
been reset).
(Flashing)
(If equipped)
Indicates that the pre-
collision system is not
currently functional.
Clean the grille and the
sensor. This message appears
when the pre-collision
system is hot. In this case,
wait until the system
cools down.
(If equipped)
Indicates that intuitive
parking assist is dirty or
covered with ice.
Clean the sensor.

5
When trouble arises
461
5-2. Steps to take in an emergency
10_IS F_U
Follow the correction procedures.After taking the specified steps to co rrect the suspected problem, check
that the warning light turns off.
Interior
buzzerExterior buzzerWa r n i n g m e s s a g eDetailsCorrection
procedure
Once
(Comes on for 10 seconds.)
Indicates that an
attempt was
made to start the
engine without
the electronic
key being
present, or the
electronic key
was not function-
ing normally.
Start the engine
with the elec-
tronic key
present.
*
Once3 times
(Flashing)
Indicates that a
door other than
the driver’s door
has been opened
and closed with
the “ENGINE
START STOP”
switch in any
mode other than
OFF and the
electronic key
has been taken
out of the detec-
tion area.
Confirm the loca-
tion of the elec-
tronic key.

5
When trouble arises
471
5-2. Steps to take in an emergency
10_IS F_U
CAUTION
■Using the tire jack
Improper use of the tire jack may lead to death or serious injuries due to the vehicle
suddenly falling off the jack.
●Do not use the tire jack for any purpose other than replacing tires.
●Only use the tire jack that comes with this vehicle for replacing a flat tire.
Do not use it on other vehicles, and do not use other tire jacks for replacing tires
on this vehicle.
●Always check that the tire jack is securely set to the jack point.
●Do not put any part of your body under the vehicle while it is supported by the
jack.
●Do not start or run the engine while your vehicle is supported by the jack.
●Do not raise the vehicle while someone is in it.
●When raising the vehicle, do not put an object on or under the jack.
●Do not raise the vehicle to a height greater than that required to replace the tire.
●Use a jack stand if it is necessary to get under the vehicle.
Take particular care when lowering the vehicle to ensure that no one working on or
near the vehicle may be injured.
■Replacing a flat tire
Observe the following precautions to reduce the risk of death or serious injury.
●Never use oil or grease on the wheel bolts or wheel nuts.
Oil and grease may cause the wheel nuts to be excessively tightened, leading to
bolt or disc wheel damage. In addition, the oil or grease can cause the wheel nuts
to loosen and the wheel may fall off, causing a serious accident. Remove any oil or
grease from the wheel bolts or wheel nuts.
●Have the wheel nuts tightened with a torque wrench to 76 ft•lbf (103 N•m, 10.5
kgf•m) as soon as possible after changing wheels.
Failure to follow these precautions could cause the nuts to loosen and the wheels
may fall off, which could lead to an accident causing death or serious injury.