2007 Lexus IS250 steering

261
4-2. Maintenance
4
Maintenance and care
Vehicle exterior
ItemsCheck points
Steering wheel
• Moves smoothly?
• Has correct free play?
• No strange noises?
ItemsCheck points
Door/trunk• Operate smoothly?
Engine hood• The lock system works properly?
Fluid leaks• Is there any leakage after parking?
Ti r e
• Inflation pressure is correct?
• Tire surfaces not worn or dam-
aged?
• Tires rotated according to the
maintenance schedule?
• Wheel nuts are not loose?
CAUTION
■If the engine is running
Turn the engine off and ensure that there is adequate ventilation before performing
maintenance checks.

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4-3. Do-it-yourself maintenance
Fuse layout and amperage ratings
■Engine compartment (type A)
FuseAmpereCircuit
1ABS NO.325AVDIM
2PWR HTR25A
3TURN-HAZ15AEmergency flashers, turn signals
4IG2 MAIN20AIG2, IGN, GAUGE
5RAD NO.230AAudio
6D/C CUT20ADOME, MPX-B
7RAD NO.130AAudio
8MPX-B10A
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
9DOME10AInterior lights, meter

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4-3. Do-it-yourself maintenance
4
Maintenance and care
FuseAmpereCircuit
10E/G-B60 AFR CTRL-B, ETCS, ALT-S, steering
lock system, exhaust system
11DIESEL GLW80 A
12ABS150 AVSC, VDIM
13RH J/B-B30APower door lock system, smart access
system with push-button start
14MAIN30AHeadlight low beams
15STARTER30ASmart access system with push-button
start
16LH J/B-B30APower 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,
HEATER, FAN1, FAN2, DEFOG,
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
22ABS230AVSC
23DEFOG50 ARear window defogger
24FA N 240 AElectric cooling fans
25FA N 140 AElectric cooling fans
26HEATER50 AAir conditioning system

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4-3. Do-it-yourself maintenance
4
Maintenance and care
■Engine compartment (type B)
FuseAmpereCircuit
1FR CTRL-B25AHeadlight high beam, horn
2A/F15AExhaust system
3ETCS10A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
4ALT-S7. 5 ACharging system
5STR LOCK25ASteering lock
6H-LP CLN30AHeadlight cleaner
7A/C COMP7. 5 AAir conditioning system
8DEICER25A
9FR CTRL-AM30AFront fog lights, parking lights, wind-
shield washer
10IG210AIgnition system
11EFI NO.210AFuel system, exhaust system
12H-LP R LWR15AHeadlight low beam (right)
13H-LP L LWR15AHeadlight low beam (left)

313
4-3. Do-it-yourself maintenance
4
Maintenance and care
■Driver’s side instrument panel
FuseAmpereCircuit
1FR P/SEAT LH30APo w e r s e a t
2A/C7. 5 AAir conditioning system
3MIR HTR15AOutside rear view mirror defoggers
4TV NO.110ADisplay
5FUEL OPEN10AFuel filler door opener
6TV NO.27. 5 A
7PSB30APre-collision seat belt
8S/ROOF25AElectric moon roof
9TA I L10ATail lights, license plate lights, parking
lights
10PA N E L7. 5 ASwitch illumination, air conditioning
system, display
11RR FOG7. 5 A
12ECU-IG LH10A
Cruise control, air conditioning sys-
tem, power steering, rain sensor, anti-
glare inside rear view mirror, shift lock
system, moon roof, tire inflation pres-
sure warning system
13FR S/HTR LH15ASeat heaters and ventilators

315
4-3. Do-it-yourself maintenance
4
Maintenance and care
■Passenger’s side instrument panel
FuseAmpereCircuit
1FR P/SEAT RH30APo w e r s e a t
2DOOR DL15A
3OBD7. 5 AOn-board diagnosis system
4STOP SW7. 5 AStop lights
5TI & TE20AElectric tilt and telescopic steering
column
6RAD NO.310AAudio
7GAUGE7. 5 AMeter
8IGN10ASRS airbag system, cruise control,
steering lock system, fuel system
9ACC7. 5 A
Lexus link system, clock, air condition-
ing system, audio, display, outside rear
view mirrors, smart access system
with push-button start
10CIG15ACigarette lighter
11PWR OUTLET15APo w e r o u t l e t
12RR DOOR RH20APo w e r w i n d o w s

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4-3. Do-it-yourself maintenance
FuseAmpereCircuit
13FR DOOR RH20APower windows, outside rear view
mirrors
14AM215ASmart access system with push-button
start
15RH-IG7. 5 A
Seat belts, Lexus parking assist-sen-
sor, automatic transmission, seat
heater and ventilator
16FR S/HTR RH15ASeat heaters and ventilators
17ECU-IG RH10A
Power seats, smart access system with
push-button start, AWD system, out-
side rear view mirrors, VDIM, VSC,
air conditioning system, pre-collision
seat belt, electric tilt and telescopic
steering, power windows, navigation
system
■After a fuse is replaced
●If the lights do not turn on even after the fuse has been replaced, a bulb may
need replacement. (P. 3 1 9 )
●If the replaced fuse blows again, have the vehicle inspected by your Lexus
dealer.
■If there is an overload in the circuits
The fuses are designed to blow before the entire wiring harness is damaged.

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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.
●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(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. 332)
If they are damaged, use a towing dolly or flat bed truck.