horn Lexus IS250C 2010 Owner's Manual

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10_IS250C/350C_U
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2-1. Driving proceduresDriving the vehicle ........................ 132
Engine (ignition) switch .............. 142
Automatic transmission.............. 147
Manual transmission .................... 154
Turn signal lever ............................ 156
Parking brake ................................. 157
Horn.................................................... 158
2-2. Instrument cluster Gauges and meters ..................... 159
Indicators and warning lights ... 165
Multi-information display........... 168
2-3. Operating the lights and windshield wipers
Headlight switch ............................ 173
Fog light switch .............................. 176
Windshield wipers and washer.............................................. 177
Headlight cleaner switch ........... 182 2-4. Using other driving systems
Cruise control ................................ 183
Dynamic radar cruise control............................................. 187
Intuitive parking assist ................. 198
Driving assist systems................. 204
Hill-start assist control ................ 210
PCS (Pre-Collision System)..... 212
2-5. Driving information Cargo and luggage ...................... 216
Vehicle load limits......................... 219
Winter driving tips ....................... 220
Trailer towing ................................. 224
Dinghy towing (vehicles with an
automatic transmission) ......... 225
Dinghy towing (vehicles with a
manual transmission)............... 226
2When driving

10_IS250C/350C_U
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Pictorial indexInstrument panel
Headlight switch Turn signal lever
Fog light switch P. 173
P. 156
P. 176
Shift paddle switches (automatic transmission) P. 151
Gauges and meters P. 159
Multi-information display P. 168
Windshield wiper and washer switch P. 177
Engine (ignition) switch P. 142
Trunk opener main switch P. 47
Tilt and telescopic steering control switch P. 72
Audio remote control switches *2P. 286
Horn P. 158Glove box P. 340
Parking brake pedal (automatic transmission) P. 157
Hood lock release lever P. 389
Inside door lock buttons P. 43

When driving2
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10_IS250C/350C_U
2-1. Driving proceduresDriving the vehicle.................. 132
Engine (ignition) switch ......... 142
Automatic transmission ........ 147
Manual transmission .............. 154
Turn signal lever ....................... 156
Parking brake ........................... 157
Horn ............................................ 158
2-2. Instrument cluster Gauges and meters ................ 159
Indicators and warning lights ......................................... 165
Multi-information display ..... 168
2-3. Operating the lights and windshield wipers
Headlight switch...................... 173
Fog light switch ......................... 176
Windshield wipers and washer ..................................... 177
Headlight cleaner switch...... 182 2-4. Using other driving
systems
Cruise control.......................... 183
Dynamic radar cruise control ..................................... 187
Intuitive parking assist ........... 198
Driving assist systems ........... 204
Hill-start assist control .......... 210
PCS (Pre-Collision System) ....... 212
2-5. Driving information Cargo and luggage ................ 216
Vehicle load limits ................... 219
Winter driving tips ................. 220
Trailer towing .......................... 224
Dinghy towing (vehicles with an
automatic transmission).... 225
Dinghy towing (vehicles with a
manual transmission) ......... 226

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2-1. Driving procedures
10_IS250C/350C_U
Horn
To sound the horn, press on or
close to the mark.

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2-4. Using other driving systems
10_IS250C/350C_U
■Sensor detection information
●Certain vehicle conditions and the surrounding environment may affect the
ability of the sensor to correctly detect obstacles. Particular instances where this
may occur are listed below.
• There is dirt, snow or ice on the sensor.
• The sensor is frozen.
•The sensor is covered in any way.
• The vehicle is leaning considerably to one side.
• On an extremely bumpy road, on an incline, on gravel, or on grass.
• The vicinity of the vehicle is noisy due to vehicle horns, motorcycle engines,air brakes of large vehicles, or other loud noises producing ultrasonic waves.
• There is another vehicle equipped with parking assist sensors in the vicinity.
• The sensor is coated with a sheet of spray or heavy rain.
• The vehicle is equipped with a fender pole or wireless antenna.
• Towing eyelets are installed.
• The bumper or sensor receives a strong impact.
• The vehicle is approaching a tall or curved curb.
• In harsh sunlight or intense cold weather
In addition to the examples above, there are instances in which, because of their
shapes, signs and other objects may be judged by the sensor to be closer than they
are.
●The shape of the obstacle may prevent the sensor from detecting it. Pay particu-
lar attention to the following obstacles.
• Wires, fences, ropes etc.
• Cotton, snow and other materials that absorb radio waves
• Sharply-angled objects
• Low obstacles
• Tall obstacles with upper sections projecting outwards in the direction of your
vehicle
■When the display flashes and a message is displayed
→ P. 4 7 2

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4-3. Do-it-yourself maintenance
10_IS250C/350C_U■
Engine 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
8TEL10 A
9STR LOCK25 ASteering lock system
10H-LP CLN30 AHeadlight cleaner
11A/C COMP7. 5 AAir conditioning system
12DEICER25 A
13FR CTRL-AM30 AWASHER, FR TAIL, FR FOG

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4-3. Do-it-yourself maintenance
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Maintenance and care
10_IS250C/350C_U
14IG210 A
Ignition system, multiport fuel injec-
tion system/sequential multiport fuel
injection system
15EFI NO.210 AFuel system, exhaust system
16H-LP R LWR15 AHeadlight low beam (right)
17H-LP L LWR15 AHeadlight low beam (left)
18F/ P M P25 AFuel system
19EFI25 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem, EFI NO. 2
20INJ20 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
21H-LP UPR15 AHeadlight high beams
22HORN10 AHorns
23WA S H E R20 AWindshield washer
24FR TAIL10 AParking lights, front side marker lights
25FR FOG15 AFront fog lights
FuseAmpereCircuit

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When trouble arises
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5-2. Steps to take in an emergency
10_IS250C/350C_U
If the engine will not start
If the engine will not start, even though correct starting procedures are
being followed (
→P. 142), consider each of the following points.
■The engine will not start even when the starter motor operates
normally.
One of the following may be the cause of the problem.
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
● The engine may be flooded.
Try to restart the engine once more following correct starting
procedures. ( →P. 142)
● There may be a malfunction in the engine immobilizer system.
(→ P. 9 3 )
■ The starter motor turns over slowly, the interior lights and head-
lights are dim, or the horn does not sound or sounds at a low vol-
ume.
One of the following may be the cause of the problem.
● The battery may be discharged. ( →P. 506)
● The battery terminal connections may be loose or corroded.
■ The starter motor does not turn ov er, the interior lights and head-
lights do not turn on, or the horn does not sound.
One of the following may be the cause of the problem.
● One or both of the battery terminals may be disconnected.
● The battery may be discharged. ( →P. 506)
● There may be a malfunction in the steering lock system.
Contact your Lexus dealer if the problem cannot be repaired, or if
repair procedures are unknown.

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Alphabetical index
10_IS250C/350C_U
Hands-free system for mobile phone ...............................307
Hazard lights Switch ...................................................... 452
Head restraints Adjusting .................................................. 62
Headlight aim .........................................443
Headlight cleaner .................................. 182
Headlights Discharge headlight
precautions .......................................450
Replacing light bulbs........................ 444
Switch ........................................................ 173
Wattage....................................................541
Heaters Seat heaters..........................................355
Side mirror ............................................ 238
Hill-start assist control ......................... 210
Hood ......................................................... 389
Hooks
Cargo ......................................................359
Shopping bag......................................359
Horn ............................................................ 158
I/M test ..................................................... 385
Identification Engine ..................................................... 527
Vehicle .................................................... 527
Ignition switch.......................................... 142
Illuminated entry system ................... 338
Indicator lights......................................... 165
Initialization Items to initialize ................................. 562 Inside rear view mirror ...........................74
Interior lights
Interior lights ........................................ 338
Switch...................................................... 339
Wattage ................................................... 541
Jack Positioning a floor jack ................... 390
Vehicle-equipped jack................... 486
Jack handle ............................................. 486
Keyless entry ............................................. 40
Keys Electronic key ......................................... 24
Engine switch ........................................ 142
If you lose your keys ........................500
If the electronic key does not operate properly..............................501
Key number.............................................. 24
Keyless entry........................................... 40
Keys.............................................................. 24
Mechanical key ......................................25
Wireless remote control key.......... 40H
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10_IS250C/350C_U
What to do if...
What to do if...
A tire puncturesP. 4 8 6If you have a flat tire
The engine does not start
P. 4 9 7If the engine will not start
P. 9 3Engine immobilizer system
P. 5 0 6If the vehicle battery is discharged
The shift lever cannot be
moved outP. 4 9 9If the shift lever cannot be shifted
from P
The engine coolant temperature
gauge enters the red zone
Steam can be seen coming
from under the hood
P. 5 0 9If your vehicle overheats
The key is lostP. 5 0 0If you lose your keys
The battery runs outP. 5 0 6If the vehicle battery is discharged
The doors cannot be lockedP. 4 3Doors
The horn begins to soundP. 9 5Alarm
The vehicle is stuck in mud or
sandP. 5 1 2If the vehicle becomes stuck