2011 LEXUS RX350 hood open

9
Theft Deterrent System
nEngine immobilizer system
The engine immobilizer system prevents the
engine from being started in the event that an
attempt is made to start the vehicle using an
unregistered key.
The security indicator light flashes to indicate that
the system is set.
nAlarm
The system sounds the alarm and flashes lights when an attempt to steal the vehicle is
detected.
To set the alarm: close the doors and hood, and lock all doors. The security indicator light
comes on to indicate that the alarm is in its preparation state. When the indicator light
begins to flash, the system is armed.
To deactivate or stop the alarm: turn the “ENGINE START STOP” switch to ACCESSORY
or IGNITION ON mode, start the engine, or unlock the doors.
nSteering lock
The steering wheel locks when the “ENGINE
START STOP” switch is turned off and the driver’s
door is opened.
When the steering lock cannot be released, the
green indicator light on the “ENGINE START
STOP” switch will flash and a message will be
shown on the multi-information display. To release
it, press the “ENGINE START STOP” switch
while gently turning the steering wheel left or
right.
The theft deterrent system includes the following features to help protect your vehicle
from theft.

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1
1-6. Theft deterrent system

Before driving
Alarm
The system sounds the alarm and flashes the lights when forcible entry is
detected.
nTriggering of the alarm
The alarm is triggered in the following situations when the alarm is
set:
lA locked door is unlocked or opened in any way other than using
the entry function, wireless remote control or mechanical key.
lThe hood is opened.
lSome models: The back door window is tapped or broken.
nSetting the alarm system
Close the doors and hood, and
lock all the 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.
nDeactivating or stopping the alarm
Do one of the following to deactivate or stop the alarms:
lUnlock the doors.
lTurn the “ENGINE START STOP” switch to ACCESSORY or
IGNITION ON mode, or start the engine. (The alarm will be
deactivated or stopped after a few seconds.)

104
1-6. Theft deterrent system
nSystem maintenance
The vehicle has a maintenance-free type alarm system.
nItems to check before locking the vehicle
To prevent unexpected triggering of the alarm and vehicle theft, make sure of the
following:
lNobody is in the vehicle.
lThe windows and moon roof are closed before the alarm is set.
lNo valuables or other personal items are left in the vehicle.
nTr i g g e r i n g o f t h e a l a r m
The alarm may be triggered in the following situations:
(Stopping the alarm deactivates the alarm system.)
nAlarm-operated door lock
lWhen the alarm is operating, the doors are locked automatically to prevent
intruders.
lDo not leave the key inside the vehicle when the alarm is operating, and make
sure the key is not inside the vehicle when recharging or replacing the battery.
lA person inside the vehicle opens a door
or the hood.
lThe battery is recharged or replaced when
the vehicle is locked.

460
4-3. Do-it-yourself maintenance
Hood
CAUTION
nPre-driving check
Check that the hood is fully closed and locked.
If the hood is not locked properly, it may open while the vehicle is in motion and
cause an accident, which may result in death or serious injury.
Release the lock from the inside of the vehicle to open the hood.
Pull the hood lock release lever.
The hood will pop up slightly.
Pull up the hood catch and lift
the hood.
STEP1
STEP2

584
5-2. Steps to take in an emergency
If the battery is discharged
The following procedures may be used to start the engine if the vehicle’s
battery is discharged.
You can call your Lexus dealer or a qualified repair shop.
If you have a set of jumper (or booster) cables and a second vehicle
with a 12-volt battery, you can jump start your vehicle by following the
steps below.
Open the hood. Remove the battery cover. (→P. 465)
Connect the jumper cables according to the following procedure:
Connect a positive jumper cable clamp to the positive (+) battery
terminal on your vehicle
Connect a positive jumper cable clamp to the positive (+) battery
terminal on the second vehicle
STEP1
STEP2

588
5-2. Steps to take in an emergency
nOverheating
If you observe the following, your vehicle may be overheating:
lThe engine coolant temperature gauge enters the red zone or a loss of power is
experienced.
lSteam comes out from under the hood.
CAUTION
nTo prevent an accident or injury when inspecting under the hood of your vehicle
lIf steam is seen coming from under the hood, do not open the hood until the
steam has subsided. The engine compartment may be very hot, causing serious
injuries such as burns.
lKeep hands and clothing away from the fans and drive belt while the engine is
running.
lDo not loosen the radiator cap while the engine and radiator are hot.
Serious injury, such as burns, may result from hot coolant and steam released
under pressure.
Add engine coolant if neces-
sary.
Water can be used in an emer-
gency if engine coolant is
unavailable. (→P. 599)
Have the vehicle inspected at the nearest Lexus dealer as soon as pos-
sible.
STEP6

656
Alphabetical index
Floor mat ..................................................420
Fluid
Brake......................................................... 601
Washer ....................................................477
Fog lights
Switch ....................................................... 195
Wattage................................................. 605
Footwell lights ........................................396
Front fog lights
Switch ....................................................... 195
Wattage................................................. 605
Front passenger occupant
classification system .......................... 122
Front passenger's seat belt
reminder light...................................... 537
Front seats
Adjustment................................................. 61
Driver’s seat position memory....... 70
Flattening seatbacks.............................. 61
Front side marker light
Replacing light bulbs........................... 511
Wattage................................................. 605
Front turn signal lights
Replacing light bulbs........................... 511
Wattage................................................. 605
Fuel
Capacity .................................................596
Fuel gauge ..............................................166
Fuel pump shut off system ............ 532
Information........................................... 606
Refueling ................................................... 97
Type......................................................... 606
Fuel door ..................................................... 97
Fuel filler door ........................................... 97
Fuel pump shut off system .................532
Fuses ..........................................................498
Garage door opener .......................... 426
Gauges .......................................................166
Glove box ................................................400
Hands-free system for
mobile phone ...................................... 362
Hazard lights switch ............................ 524
Head-up display...................................... 179
Head restraints
Adjustment .............................................. 73
Headlight aim.........................................509
Headlight cleaner................................. 203
Headlights
Discharge headlight
precautions ........................................522
Replacing light bulbs ...........................511
Switch ........................................................ 184
Wattage ................................................. 605
Head-up display .................................. 179
Heaters
Seat heaters ........................................... 416
Side mirrors............................................ 281
Hill-start assist control ........................ 238
Hood .......................................................... 460
Hooks
Cargo........................................................ 421
Coat ........................................................... 419
HUD ............................................................ 179
Horn .............................................................165
FG
H

658
Alphabetical index
Light bulbs
Replacing.................................................. 511
Wattage................................................. 605
Lights
Door courtesy lights.........................396
Emergency flasher switch ............. 524
Fog light switch .................................... 195
Hazard lights switch......................... 524
Headlight switch ................................. 184
Interior light switch ............................ 397
Luggage compartment light ........... 53
Outer foot lights .................................396
Overhead courtesy light................396
Personal light switch ........................ 397
Replacing light bulbs........................... 511
Scuff lights..............................................396
Shift lever light .....................................396
Turn signal lever ...................................163
Vanity lights ..........................................409
Wattage................................................. 605
Load capacity .........................................253
Lock steering column .......................... 156
Luggage compartment lights
Switch ......................................................... 53
Wattage................................................. 605
Luggage cover....................................... 423
Maintenance
Do-it-yourself maintenance..........457
General maintenance..................... 452
Maintenance data ............................. 594
Maintenance requirements.......... 450
Meter
Instrument panel light control ....... 167
Meters ....................................................... 166
Mirrors
Inside rear view mirror ...................... 85
Side mirror heaters ............................ 281
Side mirrors..............................................87
Vanity mirrors ..................................... 409
Moon roof................................................... 93
MP3 disc .................................................. 307
Multi-information display .................... 173
Noise from under vehicle .................... 22
Odometer .................................................166
Oil
Engine oil............................................... 466
Opener
Back door ................................................ 50
Fuel filler door ......................................... 97
Hood ....................................................... 460
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