alarm LEXUS RX350 2015 User Guide

2842-4. Using other driving systems
CAUTION■
Limitations of the pre-collision system
Do not overly rely on the pre-collision system. Always drive safely, taking care to
observe your surroundings and checking for any obstacles or other road hazards.
Failure to do so may cause an accident resulting in death or serious injury.■
Cautions regarding the assist contents of the system
By means of alarms and brake control, the pre-collision system is intended to assist
the driver in avoiding collisions through the process of LOOK-JUDGE-ACT. There
are limits to the degree of assistance the system can provide, so please keep in mind
the following important points. ●
Assisting the driver in watching the road
The pre-collision system is only able to detect obstacles directly in front of the
vehicle, and only within a limited range. It is not a mechanism that allows careless
or inattentive driving, and it is not a system that can assist the driver in low-visibil-
ity conditions. It is still necessary for the driver to pay close attention to the vehi-
cle's surroundings.●
Assisting the driver in making correct judgment
When attempting to estimate the possibilit y of a collision, the only data available
to the pre-collision system is that from ob stacles it has detected directly in front of
the vehicle. Therefore, it is absolutely necessary for the driver to remain vigilant
and to determine whether or not there is a possibility of collision in any given situ-
ation.●
Assisting the driver in taking action
The pre-collision system's braking assist feature is designed to help reduce the
severity of a collision, and so only acts when the system has judged that a collision
is unavoidable. This system by itself is not capable of automatically avoiding a col-
lision or bringing the vehicl e to a stop safely. For this reason, when encountering a
dangerous situation the driver must take direct and immediate action in order to
ensure the safety of all involved.

7945-2. Steps to take in an emergency
Starting the engine
Ensure that the shift lever is in P and depress the brake pedal.
Touch the Lexus emblem side of
the electronic key to the
“ENGINE START STOP” switch. If any of the doors is opened or
closed while the key is being
touched to the switch, an alarm will
sound to indicate that the start
function cannot detect the elec-
tronic key.
Press the “ENGINE START STOP” switch within 10 seconds of
the buzzer sounding, keeping the brake pedal depressed.
In the event that the “ENGINE START STOP” switch still cannot be oper-
ated, contact your Lexus dealer. STEP 1
STEP 2
STEP 3

5
When trouble arises
7975-2. Steps to take in an emergency
■
Starting the engine when the battery is discharged
The engine cannot be started by push-starting.■
To prevent battery discharge ●
Turn off the headlights and the audio system while the engine is off.●
Turn off any unnecessary electrical compon ents when the vehicle is running at a
low speed for an extended period, such as in heavy traffic.■
When the battery is removed or discharged ●
The power back door must be initialized.
(  P. 8 4 7 )●
Make sure that the key is not inside th e vehicle when recharging or replacing
the battery. The key may be locked in the vehicle if the alarm is activated.
(  P. 114)■
Charging the battery
The electricity stored in the battery will discharge gradually even when the vehi-
cle is not in use, due to natural discharge and the draining effects of certain
electrical appliances. If the vehicle is left for a long time, the battery may dis-
charge, and the engine may be unable to start. (The battery recharges automat-
ically during driving.) Start the engine of the second vehicle. Increase the engine
speed slightly and maintain that level for approximately 5 min-
utes to recharge the battery of your vehicle.
Open and close any of the do ors with the “ENGINE START
STOP” switch off.
Maintain the engine sp eed of the second ve hicle and start the
engine of your vehicle by tu rning the “ENGINE START STOP”
switch to IGNITION ON mode.
Once the vehicle’s engine ha s started, remove the jumper
cables in the exact reverse ord er from which they were con-
nected.
Once the engine starts, have th e vehicle inspected at your Lexus
dealer as soon as possible. STEP 3
STEP 4
STEP 5
STEP 6

870Alphabetical index
Alphabetical index A/C*
Air conditioning filter .......................699
Automatic air conditioning
system*....................................345, 353
ABS............................................................. 269
ACCESSORY mode .......................... 165
Active torque control
AWD mode ......................................... 269
Air conditioning system*
Air conditioning filter .......................699
Automatic air conditioning
system*....................................345, 353
Airbags
Airbag operating conditions.......... 122
Airbag precautions for your
child......................................................... 127
Airbag warning light ........................ 745
Curtain shield airbag operating
conditions............................................. 123
Curtain shield airbag
precautions ......................................... 127
Front passenger occupant
classification system........................ 132
General airbag precautions .......... 127
Locations of airbags............................ 119
Modification and disposal of
airbags .....................................................131
Proper driving post ure ............. 117, 127
Side airbag operating
conditions............................................. 123
Side airbag precautions ................... 127
SRS airbags ............................................. 119 Alarm ............................................................ 112
All-wheel drive lock switch .............. 275
Antenna ........................................ 380, 489
Anti-lock brake system ...................... 269
Armrest .................................................... 622
Assist grips .............................................. 624
Audio input* ................................. 412, 554
Audio system*
Antenna.................................................. 489
Audio input ........................................... 554
AUX port .............................................. 554
Bluetooth ®
audio system ............. 530
CD player/changer ..........................492
Hands-free system for mobile
phone................................................... 560
iPod ............................................................510
MP3/WMA disc.................................501
Optimal use ......................................... 552
Portable audio device..................... 554
Radio ....................................................... 483
Steering wheel audio switch........ 556
USB memory ...................................... 520
USB port .................................... 510, 520A

879Alphabetical index
Smart access system with
push-button start
Entry function ......................................... 35
Starting the engine..............................165
“SOS” button ..........................................642
Spare tire
Inflation pressure ................................ 815
Storage location.................................. 774
Spark plug .................................................. 811
Specifications......................................... 806
Speedometer ............................................ 191
Steering
Column lock release .........................168
Steering wheel
Adjustment .............................................. 90
Audio switches* .................... 430, 556
Heated steering wheel .....................619
Power easy access system.............. 78
Steering wheel position
memory ..................................................76
Storage feature ..................................... 598
Stuck vehicle
If your vehicle becomes stuck .... 802
Sun visors................................................. 609
Sunshades ................................................. 102
Switch
Display contrast adjustment
switch ................................................... 206
Display position adjustment
switch ................................................... 206
ECT SNOW switch ............... 173, 180
Emergency flasher switch ..............734
Engine switch ........................................165
ENTER switch..................................... 200
Fog light switch..................................... 215 Hazard light switch ........................... 734
Head-up display main switch ..... 206
Heated steering wheel switch ...... 619
Ignition switch ....................................... 165
Light switches ......................................... 211
Menu switch ........................................ 200
Paddle shift switches ................. 171, 178
Power back door switch ...................56
Power door lock switch .................... 52
Power window switch ........................98
Pre-collision braking off
switch.................................................... 279
Rear window wiper and
washer switch................................... 224
Window lock switch............................98
Wiper and washer switch................ 217
Tachometer................................................ 191
Tail lights
Replacing light bulbs ..........................719
Switch.......................................................... 211
Wattage ................................................... 817
Talk switch* ................................. 433, 566
Telephone*.................................. 433, 565
Telephone switch*.................... 433, 566
Theft deterrent system
Alarm........................................................... 112
Immobilizer system .............................. 110
Theft prevention labels .......................... 116
Tire inflation pressure .........................693
Tire information
Glossary ................................................ 828
Size ............................................................824
Tire identification number..............823
Uniform tire quality grading ........ 825
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”. T

882What to do if...
What to do if... A tire punctures P. 7 74
If you have a flat tire
The engine does not start P. 7 8 9
If the engine will not start P. 1 1 0
Engine immobilizer system P. 7 9 6
If the vehicle battery is discharged
The shift lever cannot be
moved out P. 7 9 1
If 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. 7 9 9
If your vehicle overheats
The key is lost P. 7 9 2
If you lose your keys
The battery runs out P. 7 9 6
If the vehicle battery is discharged
The doors cannot be locked P. 5 2
Side doors P. 5 6
Back door
The horn begins to sound P. 1 1 2
Alarm
The vehicle is stuck in mud or
sand P. 8 0 2
If the vehicle becomes stuck