2006 Lexus IS250 engine

299
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 switch OFF.
Remove the engine compartment cover.
P. 2 6 7
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

302
4-3. Do-it-yourself maintenance
Removing the front controller (engine compartment: type B)Lift the lid off while pushing the
tabs on either side.

303
4-3. Do-it-yourself maintenance
4
Maintenance and care
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

306
4-3. Do-it-yourself maintenance
■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)

314
4-3. Do-it-yourself maintenance
Light bulbs
You may replace the following bulbs yourself. For more information about
replacing other light bulbs, contact your Lexus dealer.
■Prepare a replacement light bulb.
Check the wattage of the light bulb being replaced. ( P. 388)
■ Remove the engine compartment cover.
 P. 2 6 7
■ Front bulb locations
■ Rear bulb locations
Parking light
Headlight
high beam
Rear turn signal light
Back-up light

When trouble arises5
321
5-1. Essential information ........... 322If your vehicle needs to be towed........................................... 322
If you think something is wrong .......................................... 329
Fuel pump shut off system .... 330
Event data recorder .................. 331
5-2. Steps to take in an emergency ........................... 333
If a warning light turns on or a warning buzzer
sounds... ...................................... 333
If a warning message is displayed ................................... 338
If you have a flat tire .................. 352
If the engine will not start ...... 360
If the shift lever cannot be shifted from P...................... 361
If you lose your keys ................. 362
When the electronic key battery is discharged ............ 363
If the vehicle battery is discharged ................................ 366 If your vehicle overheats ........ 369
If the vehicle becomes
stuck .............................................. 371

322
5-1. Essential information
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(s). This should only attempted on hard, surfaced roads for short
distances at low speeds.
A driver must be in the vehicle to s teer 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 se rvice, using a lift-type truck or a flat
bed truck.
Use a safety chain system for all towi ng, 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. 3 2 6 )
If they are damaged, use a to wing dolly or flat bed truck.

5
When trouble arises
323
5-1. Essential information
■Emergency towing procedureRelease the parking brake.
Put the transmission in N.
Put the engine switch in ACC mode (engine off) or IG-ON mode (engine
running).
CAUTION
■Caution while towing
●Use extreme caution when towing the vehicle.
Avoid sudden starts or erratic driving maneuvers which place excessive stress on
the emergency towing eyelets and the cables or chains.
●If the engine is not running, the power assi st for the brakes and steering will not
function, making steering and braking more difficult.
NOTICE
■To prevent causing serious damage to the transmission
(for vehicles with an automatic transmission)
Never tow this vehicle from the front with the rear wheels on the ground.
This may cause serious dama ge to the transmission.
■When towing a vehicle without using a towing dolly
(for vehicles with a manual transmission)
The engine switch must not be OFF.
STEP1
STEP2
STEP3