LEXUS IS250 2016 Owners Manual

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4-3. Do-it-yourself maintenance
4

Maintenance and care
nChecking interval
Inspect and replace the air conditioning filter according to the maintenance sched-
ule. In dusty areas or areas with heavy traffic flow, early replacement may be
required. (For scheduled maintenance information, please refer to the “Owner's
Manual Supplement/Scheduled Maintenance”.)
nIf air flow from the vents decreases dramatically
The filter may be clogged. Check the filter and replace if necessary.
nCleaning method
If the filter is dirty, clean by blow-
ing compressed air through the
filter from the downward side.
Hold the air gun 2 in. (5 cm)
from the filter and blow for
approximately 2 minutes at
72 psi (500 kPa, 5.0 kgf/cm2
or bar).
If it is not available, have the
filter cleaned by your Lexus
dealer.
nReplacement method
Remove the air conditioning fil-
ter from the filter case and
replace it with a new one.
The “↑UP” marks shown on the
filter and the filter case should
be pointing up.

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4-3. Do-it-yourself maintenance
NOTICE
nTo prevent damage to the system
lWhen using the air conditioning system, make sure that a filter is always installed.
lWhen 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
Electronic key battery
Replace the battery with a new one if it is discharged.
nYou will need the following items:
lFlathead screwdriver
lSmall Phillips-head screwdriver
lLithium battery (CR1632)
nReplacing the battery
Take out the mechanical key.
Remove the cover.
Remove the depleted battery.
Insert a new battery with the “+”
terminal facing up.
STEP1
STEP2
STEP3

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4-3. Do-it-yourself maintenance
nIf the electronic key battery is discharged
The following symptoms may occur.
lThe smart access system with push-button start and wireless remote control will
not function properly.
lThe operational range is reduced.
nUse a CR1632 lithium battery
lBatteries can be purchased at your Lexus dealer, jewelers, or camera stores.
lReplace only with the same or equivalent type recommended by a Lexus dealer.
lDispose of used batteries according to the local laws.
nWhen 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
nRemoved battery and other parts
Keep away from children.
These parts are small and if swallowed by a child they can cause choking.
NOTICE
nFor normal operation after replacing the battery
Observe the following precautions to prevent accidents.
lAlways work with dry hands.
Moisture may cause the battery to rust.
lDo not touch or move any other components inside the remote control.
lDo not bend either of the battery terminals.

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4-3. Do-it-yourself maintenance
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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
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. 351) for details about which fuse to check.
Remove the fuse with the pull-
out tool.
STEP4
STEP5

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4-3. Do-it-yourself maintenance
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Maintenance and care
Check if the fuse has blown.
Type A
Normal fuse
Blown fuse
Replace it with one of an appro-
priate amperage rating. The
amperage rating can be found
on the fuse box lid.
Type B
Normal fuse
Blown fuse
Replace it with one of an appro-
priate amperage rating. The
amperage rating can be found
on the fuse box lid.
Type C
Normal fuse
Blown fuse
Contact your Lexus dealer.
STEP6

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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
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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
FuseAmpereCircuit
10E/G-B60 AFR CTRL-B, ETCS, ALT-S, steering
lock system, exhaust system
11DIESEL GLW80 A
12ABS150 AVDIM
13RH J/B-B30 APower door lock system, smart access
system with push-button start
14MAIN30 AHeadlight low beams
15STARTER30 ASmart access system with push-button
start
16LH J/B-B30 APower door lock system, SECURITY
17P/I-B60 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
18EPS80 APower steering
19ALT150 A
LH J/B-AM, E/G-AM, GLW PLG2,
H EAT E R , FA N 1 , FA N 2 , D E F O G,
ABS2, RH J/B-AM, GLW PLG1,
LH J/B-B, RH J/B-B
20GLW PLG150 APTC heater
21RH J/B-AM80 A
OBD, STOP SW, TI&TE, FR P/SEAT
RH, RAD NO.3, ECU-IG RH,
RH-IG, FR S/HTR RH, ACC, CIG,
PWR OUTLET
22ABS230 AVDIM
23DEFOG50 ARear window defogger
24FA N 240 AElectric cooling fans
25FA N 140 AElectric cooling fans
26HEATER50 AAir conditioning system