
502
4-3. Do-it-yourself maintenance
RX350/270_EE
■Use a CR1632 lithium battery
●Batteries can be purchased at any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional, local electrical appliance
shops or camera stores.
●Replace only with the same or equivalent type recommended by the manufac-
turer.
●Dispose of used batteries according to the local laws.
■If the electronic key battery is discharged
The following symptoms may occur:
●The smart entry & start system and wireless remote control will not function
properly.
●The operational range is reduced.
■When the card key battery needs to be replaced (if equipped)
The battery for the card key is available only at Lexus dealers. Your Lexus dealer
can replace the battery for you.
Remove the depleted battery.
Insert a new battery with the “+”
terminal facing up.
STEP4
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5When trouble arises
531
RX350/270_EE
5-1. Essential information
Emergency flashers .............. 532
If your vehicle needs to
be towed ................................ 533
If you think something
is wrong ................................... 541
Fuel pump shut off
system..................................... 5425-2. Steps to take in an
emergency
If a warning light turns
on or a warning buzzer
sounds... ................................ 543
If a warning message is
displayed ................................ 552
If you have a flat tire ............... 572
If the engine will not
start.......................................... 587
If the shift lever cannot be
shifted from P....................... 589
If you lose your keys .............. 590
If the electronic key
does not operate
properly ................................... 591
If the vehicle battery is
discharged ............................. 594
If your vehicle
overheats .............................. 598
If the vehicle becomes
stuck ......................................... 601
If your vehicle has to
be stopped in an
emergency ............................ 603
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5
569
5-2. Steps to take in an emergency
When trouble arises
RX350/270_EE
Sounds
once
(Flashes)
An attempt was
made to turn the
“ENGINE START
STOP” switch off
when the shift
lever was not in P.To turn off the
engine, first shift
the shift lever to P
and then turn the
“ENGINE START
STOP” switch off.
Po w e r w a s t u r n e d
off due to the
automatic power
off function.
Next time when
starting the
engine, increase
the engine speed
slightly and main-
tain that level for
approximately 5
minutes to
recharge the bat-
tery.
Sounds
onceThe electronic key
has a low battery.Replace the elec-
tronic key battery.
(→P. 5 0 1 )
Interior
buzzerExterior
buzzerWa r n i n g m e s s a g eDetailsCorrection
procedure
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5
591
5-2. Steps to take in an emergency
When trouble arises
RX350/270_EE
If the electronic key does not operate properly
Locking and unlocking the side doors and key linked functions
Use the mechanical key (→P. 2 7 )
in order to perform the following
operations (driver’s door only):
Locks all the doors
Closes the windows and moon
roof (turn and hold)
Unlocks all the doors
For some models:
An alarm will sound if the alarm is
set. (→P. 122)
Opens the windows and moon
roof (turn and hold)
If communication between the electronic key and vehicle is interrupted
(→P. 37) or the electronic key cannot be used because the battery is
depleted, the smart entry & start system and wireless remote control can-
not be used. In such cases, the doors can be opened and the engine can be
started by following the procedure below.
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5
593
5-2. Steps to take in an emergency
When trouble arises
RX350/270_EE
■Stopping the engine
Shift the shift lever to P and press the “ENGINE START STOP” switch as you nor-
mally do when stopping the engine.
■Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the elec-
tronic key battery be replaced immediately when the battery is depleted.
(→P. 5 0 1 )
■Alarm
Using the mechanical key to lock the doors will not set the alarm system.
If a door is unlocked using the mechanical key when the alarm system is set, the
alarm may be triggered. (→P. 1 2 2 )
■Changing “ENGINE START STOP” switch modes
Within 10 seconds of the buzzer sounding, release the brake pedal and press the
“ENGINE START STOP” switch.
The engine does not start and modes will be changed each time the switch is
pressed. (→P. 1 8 1 )
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596
5-2. Steps to take in an emergency
RX350/270_EE
■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 components 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. (if equipped) (→P. 6 3 3 )
●Make sure that the key is not inside the vehicle when recharging or replacing
the battery. The key may be locked in the vehicle if the alarm is activated.
(→P. 1 2 5 )
■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.)
Once the vehicle’s engine has started, remove the jumper
cables in the exact reverse order from which they were con-
nected.
Once the engine starts, have the vehicle inspected at any authorized
Lexus dealer or repairer, or another duly qualified and equipped pro-
fessional as soon as possible.STEP6
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638
Alphabetical index
RX350/270_EE
Automatic light control system .........217
Automatic transmission
Automatic transmission ................... 186
If the shift lever cannot be
shifted from P .................................. 589
S mode ..................................................... 189
AUX port ................................................. 379
Auxiliary boxes .......................... 428, 446
Back door
Back door.................................................60
Wireless remote control ................... 53
Back-up lights
Replacing light bulbs......................... 516
Wattage................................................... 619
Battery
Checking ............................................... 479
If the vehicle has a discharged
battery ..................................................594
Preparing and checking before
winter.................................................... 296
Bluetooth
® audio* ................................ 361
Bluetooth® phone* .............................. 391
Bottle holders ......................................... 422
Brake
Emergency brake signal .................272
Fluid ........................................................... 616
Parking brake ........................................194
Brake assist................................................271
Break-in tips ............................................. 170Card key ..................................................... 26
Care
Exterior ................................................... 452
Interior..................................................... 455
Seat belts ............................................... 456
Cargo hooks .......................................... 446
CD changer
CD ............................................................ 330
MP3 disc ................................................337
WMA disc .............................................337
CD player ................................................ 330
Chains ....................................................... 296
Child restraint system
Baby seats, definition......................... 142
Baby seats, installation ...................... 152
Child seats, definition ........................ 142
Child seats, installation ..................... 152
Installing CRS with ISOFIX
rigid anchor ........................................ 157
Installing CRS with seat belts ........ 153
Installing CRS with top straps .......158
Junior seats, definition ....................... 142
Junior seats, installation .................... 152
B
C
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639
Alphabetical index
RX350/270_EE
Child safety
Airbag precautions ............................. 137
Back door precautions ...................... 66
Child restraint system........................ 142
Child-protectors ................................... 57
How your child should wear
the seat belt ............................................ 91
Installing child restraints ...................152
Moon roof precautions ....................107
Power window lock switch.............. 101
Power window precautions .......... 103
Removed electronic key battery
precautions....................................... 503
Seat belt precautions .......................... 92
Seat heater precautions .................440
Battery precautions
...................................................... 481, 594
Child-protectors ...................................... 57
Cleaning
Exterior.................................................... 452
Interior .....................................................455
Seat belts................................................456
Clock* ....................................................... 432
Coat hooks .............................................. 442
Coin holder ............................................. 427
Condenser .............................................. 478
Console box ........................................... 426
Coolant
Engine coolant .................................... 477Cooling system
Engine overheating ..........................598
Cornering assist sensors ................... 248
Cruise control
Cruise control ..................................... 230
Dynamic radar cruise control ......234
Cup holders ............................................ 423
Curtain shield airbags ........................... 131
Customizable features....................... 622
Daytime running light system .......... 220
Defogger*
Rear window.......................................... 321
Side mirror .............................................. 321
Dimensions ............................................. 606
Display
Multi-information display............... 203
Trip information.................................. 206
Warning message ............................ 552
Do-it-yourself maintenance ............... 461
Door courtesy lights
Door courtesy lights .......................... 417
Wattage ................................................... 619
Door lock
Back door ................................................ 60
Side door .................................................. 56
Wireless remote control .................. 53
Door pockets ......................................... 422
D
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.
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