2015 LEXUS RX350 ignition

6894-3. Do-it-yourself maintenance
4
Maintenance and care ■
The initialization operation ●
Make sure to carry out initialization af ter adjusting the tire inflation pressure.
Also, make sure the tires are cold before carrying out initialization or tire infla-
tion pressure adjustment.●
If you have accidentally turned the “ENGINE START STOP” switch off during
initialization, it is not necessary to pres s the reset switch again as initialization
will restart automatically when the “ENGINE START STOP” switch has been
turned to IGNITION ON mode for the next time.●
If you accidentally press the reset switch when initialization is not necessary,
adjust the tire inflation pressure to th e specified level when the tires are cold,
and conduct initialization again.■
When the initialization of the tire pressure warning system has failed
Initialization can be completed in a few minutes. However, in the following cases,
the settings have not been recorded and the system will not operate properly. If
repeated attempts to record tire inflation pressure settings are unsuccessful, have
the vehicle inspected by your Lexus dealer. ●
When operating the tire pressure warnin g reset switch, the tire pressure warn-
ing light does not blink 3 times. ●
After carrying out the initialization proc edure, the tire pressure warning light
blinks for 1 minute then stays on after driving for 20 minutes.

5
When trouble arises
7395-1. Essential information
Insert the towing eyelet into the
hole and tighten as much as possi-
ble by hand.
Using the tip of the wheel nut
wrench, tighten down the towing
eyelet securely without interfering
with the bumper.
Securely attach a cable or chain to the towing eyelet.Take care not to damage the vehicle body.
Enter the vehicle being towed and start the engine. If the engine does not start, turn the “ENGINE START STOP” switch to
IGNITION ON mode.
Shift the shift lever to N and release the parking brake.
When the shift lever cannot be shifted:  P. 7 9 1STEP 3
STEP 4
■
While towing
If the engine is not running, the power assist for the brakes and steering will not
function, making steering and braking more difficult.
■
Wheel nut wrench
Wheel nut wrench is installed in the luggage compartment. (  P. 7 74 )STEP 5
STEP 6
STEP 7

5
When trouble arises
7515-2. Steps to take in an emergency
●
If non-genuine Lexus wheels are used (Even if you use Lexus wheels, the tire
pressure warning system may not work properly with some types of tires.)●
If tire chains are used●
Vehicles with a full-size spare tire: If the spare tire is in a location subject to poor
radio wave signal reception●
Vehicles with a full-size spare tire: If a large metallic object which can interfere
with signal reception is pu t in the luggage compartment■
If the tire pressure warning light freque ntly comes on after blinking for 1 minute
If the tire pressure warning light frequently comes on after blinking for 1 minute
when the “ENGINE START STOP” switch is turned to IGNITION ON mode, have
it checked by your Lexus dealer.■
Customization
The vehicle speed linked seat belt reminder buzzer can be disabled.
(Customizable features  P. 8 3 4 )
CAUTION■
When the electric power steering system warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavier than usual when operating, hold firmly and
operate using more force than usual.■
If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could cause loss of
vehicle control and result in death or serious injury. ●
Stop your vehicle in a safe place as soon as possible. Adjust the tire inflation pres-
sure immediately.●
If the tire pressure warning light comes on even after tire inflation pressure adjust-
ment, it is probable that you have a flat tire. Check the tires. If a tire is flat, change
it with the spare tire and have the flat tire repaired by the nearest Lexus dealer.
●
Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could
lose control of the steering wheel or the brakes.
■
If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.

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

8116-1. Specifications
6
Vehicle specifications Cooling system
Ignition system Capacity Without towing pack-
age 9.1 qt. (8.6 L, 7.6 Imp. qt.)
With towing package 10.0 qt. (9.5 L, 8.4 Imp. qt.)
Coolant type Use either of the following.
• “Toyota Super Long Life Coolant”
• A similar high-quality ethylene glycol-
based non-silicate, non-amine, non-nitrite,
and non-borate coolant with long-life
hybrid organic acid technology
Do not use plain water alone.
Spark plug
Make
Gap DENSO FK20HR11
0.043 in. (1.1 mm)
NOTICE■
Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.

874Alphabetical index
Engine
Accessory mode ................................ 165
Compartment ..................................... 670
Engine switch........................................ 165
Hood........................................................ 667
How to start the engine................... 165
Identification number.......................807
If the engine will not start ...............789
Ignition switch....................................... 165
Overheating......................................... 799
Engine compartment cover ...............671
Engine coolant
Capacity .................................................... 811
Checking ............................................... 677
Preparing and checking
before winter .................................... 302
Engine coolant temperature
gauge.........................................................191
Engine immobilizer system..................110
Engine oil
Capacity ................................................ 809
Checking ............................................... 674
Preparing and checking
before winter .................................... 302
EPS ............................................................. 269
Event data recorder ............................... 26 Floor mat .................................................. 625
Fluid
Brake ......................................................... 814
Washer................................................... 683
Fog lights
Replacing light bulbs ......................... 719
Switch ........................................................ 215
Wattage ................................................... 817
Footwell light .......................................... 595
Front fog lights
Replacing light bulbs ......................... 719
Switch ........................................................ 215
Wattage ................................................... 817
Front passenger occupant
classification system ...........................132
Front passenger's seat belt
reminder light ......................................747
Front seats
Adjustment .............................................. 68
Driving position memory .................. 76
Flattening seatbacks ............................69
Front side marker lights
Replacing light bulbs ......................... 719
Front turn signal lights
Replacing light bulbs ......................... 719
Wattage ................................................... 817F

875Alphabetical index
Fuel
Capacity................................................ 808
Fuel gauge ................................................191
Fuel pump shut off system .............743
Information............................................. 818
Refueling ................................................. 105
Type........................................................... 818
Fuel door....................................................105
Fuel filler door..........................................105
Fuel pump shut off system .................743
Fuses.......................................................... 703
Garage door opener...........................632
Gauges........................................................ 191
Glove box ............................................... 599
Hands-free system for
mobile phone* ........................433, 560
Hazard lights
Switch ......................................................734
Head restraints
Adjustment ............................................... 81
Headlight aim .......................................... 717
Headlight cleaner .................................226
Headlights
Discharge headlight
precautions ........................................732
Replacing light bulbs ......................... 719
Switch .......................................................... 211
Wattage ................................................... 817
Head-up display
Display contrast adjustment
switch ................................................... 206
Display position adjustment
switch ................................................... 206 Head-up display main switch ..... 206
Heaters
Seat heaters ......................................... 620
Side mirrors* ......................................... 361
Steering wheel...................................... 619
Hill-start assist control ........................ 276
Hood .......................................................... 667
Hooks
Cargo ...................................................... 627
Coat..........................................................623
Horn ............................................................ 190
HUD
Display contrast adjustment
switch................................................... 206
Display position adjustment
switch................................................... 206
Head-up display main switch ..... 206
I/M test...................................................... 663
Identification
Engine..................................................... 807
Vehicle ................................................... 807
Ignition switch.......................................... 165
Illuminated entry system ....................595
Immobilizer system .................................110
Indicator lights......................................... 194
Initialization
Items to initialize .................................847
Inside rear view mirror .......................... 92
Instrument panel light control
buttons .................................................... 192G
H
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”. I

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