2009 Lexus IS250 engine

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Before driving
1-6. Theft deterrent system
Engine immobilizer system
■System maintenance
The vehicle has a maintenance-free type of engine immobilizer system.
■Conditions that may cause the system to malfunction
●If the grip portion of the key is in contact with a metallic object
●If the key is in close proximity to or touching a key to the security system (key
with a built-in transponder chip) of another vehicle
The vehicle's keys have built-in transponder chips that prevent the engine
from starting if the key has not been previously registered in the vehicle's
on-board computer.
Never leave the keys inside the vehicle when you leave the vehicle.
The indicator light flashes after
the “ENGINE START STOP”
switch has been turned OFF to
indicate that the system is oper-
ating.

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1-6. Theft deterrent system
■Certifications for the engine immobilizer system For vehicles sold in the U.S.A.
FCC ID: NI4TMIMB-1
This device complies with Part 15 of the FCC Rules. Operation is subject to the fol-
lowing two conditions: (1) this device may not cause harmful interference, and (2)
this device must accept any interference received, including interference that may
cause undesired operation.
FCC WARNING:
Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.
For vehicles sold in Canada
Operation is subject to the following two conditions: (1) this device may not cause
interference, and (2) this device must accept any interference, including interfer-
ence that may cause undesired operation of the device.
CAUTION
Changes or modifications no t expressly approved by the party responsible for com-
pliance could void the user’s authority to operate the equipment.
NOTICE
■To prevent damage to the key
Do not modify, remove or disable the engine immobilizer system. If any unautho-
rized changes or modifications are made, the proper operation of the system can-
not be guaranteed.

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1
1-6. Theft deterrent system
Before driving
Alarm
The system sounds the alarm and flashes lights when forcible entry is
detected.
■Triggering of the alarm
The alarm is triggered in the following situations.
●A locked door or trunk is unlocked or opened in any way other
than using the entry function, wi reless remote door lock function
or mechanical key with the alarm being set.
● The hood is opened with the alarm being set.
■ Setting the alarm system
Close the doors, trunk and
hood, and lock all doors.
The system will be set automati-
cally after 30 seconds.
The indicator light changes from
being on to flashing when the
system is set.
■Deactivating or stopping the alarm
Do one of the following to deactivate or stop the alarm.
●Unlock the doors or trunk using the entry function, wireless
remote door lock function or mechanical key.
● Turn the “ENGINE START STOP” switch to ACCESSORY or
IGNITION ON mode. (The alarm will be deactivated or stopped
after a few seconds.)

When driving2
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2-1. Driving proceduresDriving the vehicle................... 116
Engine (ignition) switch ......... 126
Automatic transmission ......... 131
Manual transmission .............. 137
Turn signal lever ....................... 139
Parking brake ........................... 140
Horn ............................................. 141
2-2. Instrument cluster Gauges and meters ................ 142
Indicators and warning lights ......................................... 148
Multi-information display ...... 151
2-3. Operating the lights and windshield wipers
Headlight switch...................... 156
Fog light switch ........................ 159
Windshield wipers and washer ..................................... 160
Headlight cleaner switch...... 165 2-4. Using other driving
systems
Cruise control.......................... 166
Dynamic radar cruise control ..................................... 170
Intuitive parking assist ........... 180
Driving assist systems ............ 186
PCS (Pre-Collision System) ........ 192
2-5. Driving information Cargo and luggage ................ 196
Vehicle load limits ................... 199
Winter driving tips ................. 200
Trailer towing .......................... 204
Dinghy towing (vehicles with
an automatic
transmission) ........................ 205
Dinghy towing (vehicles with a
manual transmission) ......... 206

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2-1. Driving procedures
Driving the vehicle
The following procedures should be observed to ensure safe driving.
■Starting the engine ( P. 126)
■ Driving
Automatic transmission
With the brake pedal depressed, shift the shift lever to D. (P. 1 3 1 )
Release the parking brake. ( P. 140)
Gradually release the brake pedal and gently depress the
accelerator pedal to accelerate the vehicle.
Manual transmission
While depressing the clutch pedal, shift the shift lever into 1. (P. 1 3 7 )
Release the parking brake. ( P. 140)
Gradually release the clutch pedal. At the same time, gently
depress the accelerator pedal to accelerate the vehicle.
■ Stopping
Automatic transmission
With the shift lever in D, depress the brake pedal.
If necessary, set the parking brake.
When the vehicle is stopped for an extended period of time, shift the
shift lever to P or N. (
P. 131)
Manual transmissionWhile depressing the clutch pedal, depress the brake pedal.
If necessary, set the parking brake.
When the vehicle is stopped for an extended period of time, shift the
shift lever into N. (
P. 1 3 7 )
STEP1
STEP2
STEP3
STEP1
STEP2
STEP3
STEP1
STEP2
STEP1
STEP2

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2-1. Driving procedures
2
When driving
Starting on a steep uphillAutomatic transmission Firmly set the parking brake and shift the shift lever to D.
Gently depress the accelerator pedal.
Release the parking brake.
Manual transmission
With the parking brake firmly set and the clutch pedal fully
depressed, shift the shift lever into 1.
Lightly depress the accelerator pedal at the same time as gradu-
ally releasing the clutch pedal.
Release the parking brake.
■ Parking the vehicle
Automatic transmission
With the shift lever in D, depress the brake pedal.
Set the parking brake. ( P. 140)
Shift the shift lever to P. ( P. 1 3 1 )
Press the “ENGINE START STOP” switch and stop the engine.
Lock the door, making sure that you have the electronic key on
your person.
Manual transmission While depressing the clutch pedal, depress the brake pedal.
Set the parking brake. ( P. 140)
Shift the shift lever into N. ( P. 1 3 7 )
Press the “ENGINE START STOP” switch to stop the engine.
Lock the door, making sure that you have the electronic key on
your person.
STEP1
STEP2
STEP3
STEP4
STEP5
STEP1
STEP2
STEP3
STEP4
STEP5
STEP1
STEP2
STEP3
STEP1
STEP2
STEP3

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2-1. Driving procedures
■Starting off on a hill (vehicles with an automatic transmission)
Hill-start assist control will operate. (P. 1 8 6 )
■Driving in the rain
●Drive carefully when it is raining, because visibility will be reduced, the windows
may become fogged-up, and the road will be slippery.
●Drive carefully when it starts to rain, because the road surface will be especially
slippery.
●Refrain from high speeds when driving on an expressway in the rain, because
there may be a layer of water between th e tires and the road surface, preventing
the steering and brakes from operating properly.
■Breaking in your new Lexus
To extend the life of the vehicle, the following precautions are recommended to
observe:
●For the first 186 miles (300 km):
Avoid sudden stops.
●For the first 621 miles (1000 km):
• Do not drive at extremely high speeds.
• Avoid sudden acceleration.
• Do not drive continuously in the low gears.
• Do not drive at a constant speed for extended periods.
■Drum-in-disc type parking brake system
Your vehicle has a drum-in-disc type parking brake system. This type of brake sys-
tem needs bedding-down of the brake shoe s periodically or whenever the parking
brake shoes and/or drum are replaced. Have your Lexus dealer perform the bed-
ding down.
■Operating your vehicle in a foreign country
Comply with the relevant vehicle registration laws and confirm the availability of the
correct fuel. ( P. 4 3 3 )
■Normal characteristics after turning off the engine
Approximately five hours after the engine is turned off, you may hear sound coming
from under the vehicle for several minutes. This is because fuel evaporation leakage
check is performed. It does not indicate a malfunction.

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2-1. Driving procedures
2
When driving
CAUTION
■When starting the vehicle
With automatic transmission vehicles, always keep your foot on the brake pedal
while stopped with the engine running. This prevents the vehicle from creeping.
■When driving the vehicle
●Do not drive if you are unfamiliar with the location of the brake and accelerator
pedals to avoid depressing the wrong pedal.
• Accidentally depressing the accelerator pedal instead of the brake pedal will
result in sudden acceleration that may le ad to an accident that could result in
death or serious injury.
• When backing up, you may twist your bo dy around, leading to a difficulty in
operating the pedals. Make sure to operate the pedals properly.
• Make sure to keep a correct driving posture even when moving the vehicle only slightly, allowing you to depress the brake and accelerator pedals prop-
erly.
• Depress the brake pedal using your right foot. Depressing the brake pedal using your left foot may delay response in an emergency, resulting in an acci-
dent.
●Do not drive the vehicle over or stop the vehicle near flammable materials.
●With automatic transmission vehicles, do not let the vehicle roll backwards while
the shift lever is in a driving position, or roll forward while the shift lever is in R.
Doing so may cause the engine to stall or lead to poor brake and steering perfor-
mance, resulting in an accident or damage to the vehicle.
●If the smell of exhaust is noticed inside the vehicle, open the windows and check
that the trunk is closed. Large amounts of exhaust in the vehicle can cause driver
drowsiness and an accident, resulting in death or a serious health hazard. Have
the vehicle inspected by your Lexus dealer immediately.
●Do not under any circumstance s shift the shift lever to P, R or N (vehicles with an
automatic transmission) or R (vehicles with a manual transmission) while the vehi-
cle is moving.
Doing so can cause significant damage to the transmission system and may result
in a loss of vehicle control.
●Do not shift the shift lever to N while the vehicle is moving.
Doing so may cause the engine brake to not operate properly and lead to an
accident.