2011 LEXUS RX350 battery

10
Engine (Ignition) Switch
nStarting the engine
Make sure the parking brake is set and the shift
lever is in P.
Depress the brake pedal.
The “ENGINE START STOP” switch indi-
cator light turns green.
Press the “ENGINE START STOP” switch.
nStopping the engine
Set the parking brake and shift the shift lever to P.
Press the “ENGINE START STOP” switch.
To change the “ENGINE START STOP” switch mode without turning on the engine, press
the “ENGINE START STOP” switch without depressing the brake pedal. The mode can be
changed in the following order:
With the electronic key on your person, the engine can be started by simply pressing the
“ENGINE START STOP” switch, while depressing the brake pedal.
(The mechanical key cannot be used to start the engine.)
If the shift lever is in a position other than P when turning off the engine, the “ENGINE
START STOP” switch will be turned to ACCESSORY mode, not to OFF. To avoid unex-
pected battery discharge, make sure the lever is in the P poistion when stopping the engine.
ACCE SSORY modeIGNITION ON mode
(Indicator light: amber)
Off
(Indicator light: off)

What to do if ...
69
If the electronic key does not operate
properly
nUnlocking and locking the doors
To unlock or lock the vehicle, use the mechanical
key. (driver's door only) The mechanical key is
stored inside the electronic key.
Locks
Unlocks
nStarting the engine
Depress the brake pedal.
Touch the Lexus emblem side of the electronic
key to the “ENGINE START STOP” switch.
Press the “ENGINE START STOP” switch
within 10 seconds of the buzzer, keeping the
brake pedal depressed.
*: If equipped
1
2
Card key*
If the electronic key battery becomes depleted, replace it with a new battery. For instruc-
tions on replacing the battery, refer to the Owner's Manual. If you need further assistance,
contact your Lexus dealer.

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2
3
4
5
6
7
5
4-1. Maintenance and care
Cleaning and protecting
the vehicle exterior................... 444
Cleaning and protecting
the vehicle interior .................... 447
4-2. Maintenance
Maintenance requirements .... 450
General maintenance ................ 452
Emission inspection and
maintenance (I/M)
programs ...................................... 456
4-3. Do-it-yourself maintenance
Do-it-yourself service
precautions .................................. 457
Hood.................................................. 460
Positioning a floor jack................ 461
Engine compartment.................. 463
Tires ................................................... 478
Tire inflation pressure ................. 487
Wheels............................................... 491
Air conditioning filter.................. 493
Electronic key battery ................ 496
Checking and replacing
fuses ............................................... 498
Headlight aim
(discharge headlights) ........... 509
Light bulbs .......................................... 511
5-1. Essential information
Emergency flashers .................... 524
If your vehicle needs to
be towed ....................................... 525
If you think something
is wrong .......................................... 531
Fuel pump shut off system ........ 532
Event data recorder.................... 533
5-2. Steps to take in an emergency
If a warning light turns
on or a warning buzzer
sounds... ....................................... 535
If a warning message is
displayed....................................... 545
If you have a flat tire..................... 564
If the engine will not start .......... 577
If the shift lever cannot be
shifted from P .............................. 579
If you lose your keys ................... 580
If the electronic key does
not operate properly ................ 581
If the battery is discharged ...... 584
If your vehicle overheats ........... 587
If the vehicle becomes
stuck............................................... 590
If your vehicle has to be
stopped in an
emergency .................................... 591
4Maintenance and care5When trouble arises

27
1-1. Key information
1

Before driving
Using the mechanical key
To take out the mechanical key:
Electronic keys: Slide the release
lever and take the key out.
Card key: Press the lock release
button and take the key out.
If the key cannot be inserted in a
lock cylinder, turn it over and re-
attempt to insert it. Mechanical
keys with grooves on one side can
be inserted in one direction only.
After using the mechanical key,
store it in the electronic key. Carry
the mechanical key together with
the electronic key. If the electronic
key battery is depleted or the entry
function does not operate properly,
you will need the mechanical key.
(→P. 5 8 1 )
nCard key
lThe mechanical key that is stored inside the card key should be used only if a
problem arises, such as when the key does not operate properly.
lIf it is difficult to take out the mechanical key, press down the lock release button
using a pen tip etc. If it is still difficult to pull it out, use a coin etc.
lTo store the mechanical key in the card
key, insert it while pressing the lock
release button.

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1-1. Key information
lThe card key is not waterproof.
nWhen required to leave the vehicle’s key with a parking attendant
Lock the glove box as circumstances demand. (→P. 400)
Remove the mechanical key for your own use and provide the attendant with the
electronic key only.
nKey number plate
Keep the plate in a safe place such as your wallet, not in the vehicle. In the event that
a mechanical key is lost, a new key can be made at your Lexus dealer using the key
number plate. (→P. 5 8 0 )
nWhen riding in an aircraft
When bringing an electronic key onto an aircraft, make sure you do not press any
buttons on the electronic key while inside the aircraft cabin. If you are carrying an
electronic key in your bag etc, ensure that the buttons are not likely to be pressed
accidentally. Pressing a button may cause the electronic key to emit radio waves
that could interfere with the operation of the aircraft.
lIf the battery cover is not installed and
the battery falls out or if the battery was
removed because the key got wet, rein-
stall the battery with the positive termi-
nal facing the Lexus emblem.

30
1-1. Key information
NOTICE
nPrecautions for handling the card key
lDo not apply excess force when inserting the mechanical key to the card key.
Doing so may damage the card key.
lIf the battery or card key terminals get wet, the battery may corrode and the card
key may stop working.
If the key is dropped into water, or if drinking water etc. is spilled on the key,
immediately remove the battery cover and wipe the battery and terminals. (To
remove the battery cover, lightly grasp and pull it.) If the battery is corroded, have
your Lexus dealer, replace the battery.
lDo not crush the battery cover or use a screwdriver to remove the battery cover.
Forcibly removing the battery cover may bend or damage the key.
lIf the battery cover is frequently removed, the battery cover may become loose.
lWhen installing the battery, make sure to check the direction of the battery.
Installing the battery in the wrong direction may cause the battery to deplete rap-
idly.
lThe surface of the card key may be damaged, or its coating may peel off in the
following situations:

36
1-2. Opening, closing and locking the doors
nBattery-saving function
If the vehicle is parked for a long period of time, the battery-saving function is acti-
vated in order to prevent the vehicle battery from being discharged and the elec-
tronic key battery from being depleted.
lIn the following circumstances, unlocking the vehicle using the entry function
may take longer than usual

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1-2. Opening, closing and locking the doors
1

Before driving
nTo operate the system properly
Make sure to carry the electronic key when operating the system. Do not get the
electronic key too close to the vehicle when operating the system from the outside
of the vehicle.
Depending on the position and holding condition of the electronic key, the key may
not be detected correctly and the system may not operate properly. (The alarm may
go off accidentally, or the door lock prevention may not function.)
nIf the smart access system with push-button start does not operate properly
lLocking and unlocking the doors: Use the mechanical key. (→P. 5 8 1 )
lStarting the engine: →P. 5 8 2
nElectronic key battery depletion
lThe standard battery life is 1 to 2 years. (The card key battery life is about a year
and a half.)
lIf the battery becomes low, an alarm will sound in the cabin when the engine
stops. (→P. 5 5 6 )
lAs the electronic key always transmits radio waves, the battery will become
depleted even if the electronic key is not used. The following symptoms indicate
that the electronic key battery may be depleted. Replace the battery when nec-
essary. (→P. 4 9 6 )