2010 Lexus IS F engine

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

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4-3. Do-it-yourself maintenance
4
Maintenance and care
10_IS F_U
Removing the front controller (engine compartment: type B)Lift the lid off while pushing the
tabs on either side.
Ty p e DNormal fuse
Blown fuse
Contact your Lexus dealer.

412
4-3. Do-it-yourself maintenance
10_IS F_U
Fuse layout and amperage ratings■ Engine compartment (type A)
FuseAmpereCircuit
1ALT-S7. 5 ACharging system
2TURN-HAZ15 AEmergency flashers, turn signals
3IG2 MAIN20 AIG2, IGN, GAUGE
4RAD NO. 230 AAudio system
5D/C CUT20 ADOME, MPX-B
6RAD NO. 130 AAudio system
7MPX-B10 A
Headlights, front fog lights, parking
lights, windshield washer, horns,
power door lock system, power win-
dows, power seats, electric tilt and
telescopic steering column, meters
and gauges, smart access system with
push-button start, outside rear view
mirrors, air conditioning system
8DOME10 AInterior lights, meters and gauges,
front footwell lights
9CDS10 AElectric cooling fans

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4-3. Do-it-yourself maintenance
4
Maintenance and care
10_IS F_U■
Engine compartment (type B)
FuseAmpereCircuit
1SPARE30 ASpare fuse
2SPARE25 ASpare fuse
3SPARE10 ASpare fuse
4FR CTRL-B25 AHORN, H-LP HI
5A/F15 AExhaust system
6ETCS10 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
7TEL10 ASafety connect
8INJ225 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
9STR LOCK25 ASteering lock system
10H-LP CLN30 AHeadlight cleaner
11DEICER25 A
12FR CTRL-AM30 AFR FOG, WASHER, FR TAIL

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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

When trouble arises5
429
10_IS F_U
5-1. Essential informationEmergency flashers.............. 430
If your vehicle needs to be towed ....................................... 431
If you think something is wrong .................................. 437
Fuel pump shut off system .................................... 438
Event data recorder .............. 439 5-2. Steps to take in an
emergency
If a warning light turns on or a warning buzzer
sounds... .................................. 441
If a warning message is displayed................................. 451
If you have a flat tire............... 465
If the engine will not start ..... 474
If the shift lever cannot be shifted from P ........................ 475
If you lose your keys ............... 476
If the electronic key does not operate properly........... 477
If the vehicle battery is discharged ............................ 480
If your vehicle overheats ..... 483
If the vehicle becomes stuck........................................ 486

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10_IS F_U
5-1. Essential information
Emergency flashers
NOTICE
■To prevent battery discharge
Do not leave the emergency flashers on longer than necessary when the engine is
not running.
Use the emergency flashers if the vehicle malfunctions or is involved in an
accident.
Press the switch to flash all the
turn signal lights. To turn them
off, press the switch once again.

5
When trouble arises
431
5-1. Essential information
10_IS F_U
If your vehicle needs to be towed
Before towingThe following may indicate a problem with your transmission. Contact
your Lexus dealer before towing.
● The engine is running, but the vehicle will not move.
● The vehicle makes an abnormal sound.
Emergency towing
If a tow truck is not available, in an emergency your vehicle may be tem-
porarily towed using a cable or chain secured to the emergency towing
eyelet. This should only be attempted on hard, surfaced roads for short
distances at low speeds.
A driver must be in the vehicle to steer and operate the brakes. The vehi-
cle’s wheels, drive train, axles, steering and brakes must be in good condi-
tion. Towing eyelet
If towing is necessary, we recommend having your vehicle towed by your
Lexus dealer or a commercial towing se rvice, using a lift-type truck or a flat
bed truck.
Use a safety chain system for all towing, and abide by all state/provincial
and local laws.
If towing from the rear, the vehicle’s front wheels and axles must be in good
condition. ( →P. 4 3 5 )
If they are damaged, use a towing dolly or flat bed truck.