2016 LEXUS IS250 engine

347
4-3. Do-it-yourself maintenance
4

Maintenance and care
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 OFF.
Engine compartment (type B fuse box): Remove the engine
compartment cover. (→P. 312)
Open the fuse box cover.
Engine compartment (type A fuse box)
Push the tabs in and lift the lid
off.
Engine compartment (type B fuse box)
Push the tabs in and lift the lid
off.
STEP1
STEP2
STEP3

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4-3. Do-it-yourself maintenance
Removing the front controller (engine compartment: type B fuse box)
Lift the lid off while pushing the
tabs on either side.
Type D
Normal fuse
Blown fuse
Contact your Lexus dealer.

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4-3. Do-it-yourself maintenance
4

Maintenance and care
Fuse layout and amperage ratings
nEngine compartment (type A fuse box)
FuseAmpereCircuit
1PWR HTR25 A
2TURN-HAZ15 AEmergency flashers, turn signals
3IG2 MAIN20 AIG2, IGN, GAUGE
4RAD NO.230 AAudio
5D/C CUT20 ADOME, MPX-B
6RAD NO.130 AAudio
7MPX-B10 A
Headlights, front fog lights, parking
lights, license plate lights, windshield
washer, horn, power door lock system,
power windows, power seats, electric
tilt and telescopic steering column,
meter, smart access system with push-
button start, outside rear view mirrors,
air conditioning system, security sys-
tem
8DOME10 AInterior lights, meter
9CDS10 AElectric cooling fans

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4-3. Do-it-yourself maintenance
nEngine compartment (type B fuse box)
FuseAmpereCircuit
1SPARE30 ASpare fuse
2SPARE25 ASpare fuse
3SPARE10 ASpare fuse
4FR CTRL-B25 AHeadlight high beam, horn
5A/F15 AExhaust system
6ETCS10 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
7ALT-S7. 5 ACharging system
8STR LOCK25 ASteering lock
9H-LP CLN30 AHeadlight cleaner
10A/C COMP7. 5 AAir conditioning system
11DEICER25 A
12FR CTRL-AM30 AFront fog lights, parking lights, wind-
shield washer
13IG210 AIgnition system

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4-3. Do-it-yourself maintenance
4

Maintenance and care
Headlight aim
nRemoving the engine compartment cover
→P. 31 2
nVertical movement adjusting bolts
Adjustment bolt A
Adjustment bolt B
nBefore 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.
STEP1
STEP2
STEP3
STEP4

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4-3. Do-it-yourself maintenance
4

Maintenance and care
Light bulbs
You may replace the following bulbs yourself. For more information about
replacing other light bulbs, contact your Lexus dealer.
nPreparing a replacement light bulb
Check the wattage of the light bulb being replaced. (→P. 445)
nRemoving the engine compartment cover
→P. 31 2
nFront bulb locations
nRear bulb locations
Parking light
Headlight
high beam
Rear turn signal lightBack-up light

372
5-1. Essential information
Emergency flashers
NOTICE
nTo 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
373
5-1. Essential information
If your vehicle needs to be towed
Before towing
The following may indicate a problem with your transmission. Contact
your Lexus dealer before towing.
lThe engine is running, but the vehicle will not move.
lThe 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(s). This should only 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 eyelets
If towing is necessary, we recommend having your vehicle towed by your
Lexus dealer or a commercial towing service, 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. 377)
If they are damaged, use a towing dolly or flat bed truck.