key battery LEXUS RX350 2016 Owner's Manual

658 8-2. Steps to take in an emergency
RX350_U_OM48E90U One of the following may be the cause of the problem: ●
There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle. ●
The engine may be flooded.
Try to restart the engine again following correct starting procedures.
(  P. 220)●
There may be a malfunction in the engine immobilizer system. (  P. 74 )
One of the following may be the cause of the problem: ●
The battery terminal connections may be loose or corroded. ●
The battery may be discharged. (  P. 6 6 5 )
The engine starting system may be malfun ctioning due to an electrical problem
such as electronic key battery depletion or a blown fuse. However, an interim
measure is available to start the engine. (  P. 6 5 9 )If the engine will not start If the engine will not start even though correct starting procedures are being
followed (  P. 220), consider each of the following points:
The engine will not start even thoug h the starter motor operates nor-
mally.
The starter motor turns over slowly , the interior lights and headlights
are dim, or the horn does not sound or sounds at a low volume.
The starter motor does not turn over

6618-2. Steps to take in an emergency
8
When trouble arises
RX350_U_OM48E90U ■
Unlocking the door
Use the mechanical key (  P. 121) in order to perform the following opera-
tions:
Insert the mechanical key while
pulling on the driver’s door han-
dle.
Unlocking the door. Turning the key rearward unlocks the
driver’s door. Turning the key again
unlocks the other doors.
Remove the key, return the handle, and then pull the handle again.If the electronic key do es not operate properlyIf communication between the electron ic key and vehicle is interrupted
(  P. 148) or the electronic key ca nnot be used because the battery is
depleted, the smart access system with push-button start and wireless
remote control cannot be used. In such cases, the doors can be opened and
the engine can be started by following the procedure below.
Locking and unlocking the doors 1
2
3

664 8-2. Steps to take in an emergency
RX350_U_OM48E90U ■
Stopping the engine
Shift the shift lever to P, set the parking br ake, and press the engine switch as you nor-
mally do when stop ping the engine.■
Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the electronic
key battery be replaced immediately when the battery is depleted. (  P. 6 0 3 )■
Changing engine switch modes
Release the brake pedal and press the engine switch in step above.
The engine does not start and modes will be changed each time the switch is pressed.
(  P. 221) ■
When the electronic key does not work properly ●
Make sure that the smart access system wi th push-button start has not been deacti-
vated in the custom ization setting. If it is off, turn the function on.
(Customizable features  P. 699)●
Check if battery-saving mo de is set. If it is se t, cancel the function. (  P. 1 4 8 )
WA R N I N G ■
When using the mechanical key and operating the power windows or the moon roof
or panoramic moon roof
Operate the power window or the moon roof or panoramic moon roof after checking
to make sure that there is no possibility of any passenger ha ving any of their body parts
caught in the window or the moon roof or panoramic moon roof.
Also, do not allow children to operate the mech anical key. It is possible for children and
other passengers to get caught in the powe r window or the moon roof or panoramic
moon roof. 3

6658-2. Steps to take in an emergency
8
When trouble arises
RX350_U_OM48E90U If you have a set of jumper (or booster) cables and a second vehicle with a bat-
tery, you can jump start your vehicle by following the steps below.
Confirm that the electronic key is
being carried. When connecting the jumper (or
booster) cables, depending on the situa-
tion, the alarm may activate and doors
locked. (
 P. 77)
Open the hood (  P. 5 7 2 )
Connect the jumper cables according to the following procedure:
Connect a positive jumper cable clamp to the positive (+) battery terminal
on your vehicle.
Connect the clamp on the other end of the positive cable to the positive (+)
battery terminal on the second vehicle.
Connect a negative cable clamp to the negative (-) battery terminal on the
second vehicle.If the vehicle battery is discharged The following procedures may be used to start the engine if the vehicle’s bat-
tery is discharged.
You can also call your Lexus dealer or a qualified repair shop. 1
2
3
1
2
3

666 8-2. Steps to take in an emergency
RX350_U_OM48E90U Connect the clamp at the other end of the negative cable to a solid, station-
ary, unpainted metallic point away from the battery and any moving parts,
as shown in the illustration.
Start the engine of the second vehicle. Increase the engine speed slightly and
maintain at that level for approximately 5 minutes to recharge the battery of
your vehicle.
Open and close any of the doors of your vehicle with the engine switch off.
Maintain the engine speed of the second vehicle and start the engine of your
vehicle by turning the engine switch to IGNITION ON mode.
Once the vehicle’s engine has started, remove the jumper cables in the exact
reverse order from which they were connected.
Once the engine starts, have the vehicle inspected at your Lexus dealer as soon
as possible. ■
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. ■
Charging the battery
The electricity stored in the battery will discharge gradually even when the vehicle is not
in use, due to natural discharg e and the draining effects of certain electrical appliances. If
the vehicle is left for a long time, the battery may discharge, and the engine may be
unable to start. (The battery recharges automatically during driving.) ■
When the battery is removed or discharged ●
In some cases, it may not be possible to unlock the doors using the smart access system
with push-button start when the battery is discharged. Use the wireless remote control
or the mechanical key to lock or unlock the doors. ●
The engine may not start on the first attempt after the battery has recharged but will
start normally after the second attempt. This is not a malfunction. ●
The engine switch mode is memorized by the vehicle. When the battery is recon-
nected, the system will return to the mode it was in before the battery was discharged.
Before disconnecting the battery, turn the engine switch off.
If you are unsure what mode the engine switch was in before the battery discharged, be
especially careful when reconnecting the battery. ●
The power back door must be initialized. (  P. 1 3 8 )4
4
5
6
7

728
RX350_U_OM48E90U What to do if... (Troubleshooting)
What to do if... (Troubleshooting) ●
If you lose your mechanical keys, ne w genuine mechanical keys can be made
by your Lexus dealer. (  P. 1 2 1 )●
If you lose your electronic keys, the risk of vehicle theft increases significantly.
Contact your Lexus dealer immediately. (  P. 1 2 3 )●
Is the electronic key battery weak or depleted? (  P. 6 0 3 )●
Is the engine switch in IGNITION ON mode?
When locking the doors, turn the engine switch off. (  P. 221)●
Is the electronic key left inside the vehicle?
When locking the doors, make sure that you have the electronic key on your
person. ●
The function may not operate properly du e to the condition of the radio wave.
(  P. 1 4 8 )
●
Is the child-protector lock set?
The rear door cannot be opened from inside the vehicle when the lock is set.
Open the rear door from outside and then unlock the child-protector lock.
(  P. 1 2 7 )If you have a problem, check the following before contacting your Lexus
dealer.
The doors cannot be locked, unlocked, opened or closed You lose your keys
The doors cannot be locked or unlocked
The rear door cannot be opened

729What to do if... (Troubleshooting)
RX350_U_OM48E90U ●
Did you press the engine switch while firmly depressing the brake pedal?
(  P. 220)●
Is the shift lever in P? (  P. 2 2 2 )●
Is the electronic key anywhere detectable inside the vehicle? (  P. 1 4 6 )●
Is the steering wheel unlocked? (  P. 222)●
Is the electronic key battery weak or depleted?
In this case, the engine can be started in a temporary way. (  P. 6 6 3 )●
Is the battery discharged? (  P. 6 6 5 )●
Is the engine switch in IGNITION ON mode?
If you cannot release the shift lever by depressing the brake pedal with the
engine switch in IGNITION ON mode (  P. 6 6 0 )●
It is locked automatically to prevent theft of the vehicle. (  P. 222)
●
Is the window lock switch pressed?
The power window except for the one at the driver’s seat cannot be operated
if the window lock switch is pressed. (  P. 1 7 7 )
●
The auto power off function will be operated if the vehicle is left in
ACCESSORY or IGNITION ON mode (the engine is not operating) for a
period of time. (  P. 222)If you think something is wrong The engine does not start
The shift lever cannot be shifted from P even if you depress the brake
pedal
The steering wheel cannot be turned after the engine is stopped
The windows do not open or close by operating the power window
switches
The engine switch is turned off automatically

734 Alphabetical index
RX350_U_OM48E90U BSM (Blind Spot Monitor)................ 355
Blind Spot Monitor function ........ 359
Rear Cross Traffic Alert
function ................................................363
Care
Aluminum wheels ..............................557
Exterior................................................... 556
Interior ...................................................... 561
Seat belts ................................................562
Self-restoring coat ............................ 556
Cargo capacity...........................200, 674
Cargo hooks ........................................... 518
Cargo net hooks .................................... 518
CD player ................................................ 422
Chains ........................................................ 381
Child restraint system............................ 57
Booster seats installation...................66
Convertible seats installation .......... 64
Front passenger occupant
classification system ......................... 49
Infant seats definition ........................... 63
Infant seats installation ........................59
Installing CRS with LATCH
anchors ...................................................69
Installing CRS with seat belts .......... 63
Installing CRS with top tether
strap............................................................ 71
LATCH anchors ...................................69 Child safety .................................................56
Airbag precautions.............................. 39
Battery precautions ..............582, 667
Child restraint system......................... 57
How your child should
wear the seat belt ...............................32
Installing child restraints .................... 57
Moon roof precautions ....................184
Panoramic moon roof
precautions ........................................ 188
Power back door precautions......140
Power window lock switch............. 177
Power window precautions .......... 180
Rear door child-p rotectors ............ 127
Removed key battery
precautions .......................................604
Seat belt extender
precautions .......................................... 34
Seat belt precautions .......................... 34
Seat heater precautions ................ 505
Child-protectors .................................... 127
Cleaning ........................................ 556, 561
Aluminum wheels .............................. 557
Exterior ...................................................556
Interior .......................................................561
Seat belts................................................ 562
Clock ................................................. 85, 524
Coat hooks ............................................. 535
Compass ................................................. 543
Condenser ...............................................579
Console box ............................................. 513
Consumption screen ..................... 93, 113C

736 Alphabetical index
RX350_U_OM48E90U Eco drive mode ..................................... 369
Eco Driving Indicator........................... 104
EDR (Event data recorder) ...................10
Electric Power Steering (EPS) ....... 374
Warning light ...................................... 635
Electronic key ......................................... 120
Battery-saving function .....................147
If the electronic key does not
operate properly.............................. 661
Replacing the battery ...................... 603
Emergency flashers ............................. 624
Emergency, in case of
If a warning buzzer sounds...........634
If a warning light turns on...............634
If a warning message is
displayed.............................................. 641
If the battery is discharged ........... 665
If the electronic key does not
operate properly.............................. 661
If the engine will not start............... 658
If you have a flat tire ......................... 646
If you lose your keys .................. 121, 123
If you think something is
wrong ...................................................632
If your vehicle becomes stuck .......671
If your vehicle has to
be stopped in an emergency ...625
If your vehicle needs to be
towed....................................................626
If your vehicle overheats ............... 668 Engine
ACCESSORY mode ....................... 221
Compartment ..................................... 574
Engine switch ...................................... 220
Hood........................................................ 572
How to start the engine.................. 220
Identification number ....................... 676
If your vehicle has to be
stopped in an emergency.......... 625
Ignition switch (engine switch) ... 220
Overheating........................................ 668
Engine coolant
Capacity ................................................. 678
Checking ............................................... 578
Preparing and checking
before winter ................................... 380
Engine coolant temperature
gauge ........................................................ 85
Engine immobilizer system .................. 74
Engine oil
Capacity ................................................. 676
Checking ............................................... 575
Preparing and checking
before winter ................................... 380
Engine switch ......................................... 220
Enhanced VSC ......................................374
EPS
(Electronic Power Steering) .........374
Warning light .......................................635
Event data recorder (EDR)................... 10E

739Alphabetical index
RX350_U_OM48E90U Keyless entry
Smart access system with
push-button start ............................. 146
Wireless remote control .......120, 130
Keys............................................................. 120
Battery-saving function .................... 148
Electronic key ....................................... 120
Engine switch .......................................220
If the electronic key does not
operate properly.............................. 661
Key number plate ............................... 120
Keyless entry ......................................... 120
Mechanical key ...................................... 121
Replacing the battery ...................... 603
Warning buzzer .................................. 125
Wireless remote control ................. 120
Knee airbags ............................................. 36
Lane Departure Alert
with steering control (LDA).......... 293
Lane-Keeping Assist (LKA)............. 283
Language (multi-information
display)...................................................... 101
LATCH anchors ...................................... 69
LDA (Lane Departure Alert
with steering control) ...................... 293
Lever
Auxiliary catch lever ......................... 572
Hood lock release lever ................. 572
Shift lever .................................... 225, 229
Turn signal lever ................................. 234
Wiper lever .............................. 250, 256
Lexus Climate Concierge ................ 494 Lexus Display Audio controller ..... 392
Lexus Enform
* Lexus Enform Remote
* .................... 552
LEXUS Enform Safety
Connect.................................................547
LEXUS Enform Service
Connect
* ............................................. 554
Lexus parking assist monitor ........... 339
Display..................................................... 340
Precautions ........................................... 346
Lexus Safety System+ .........................262
Automatic High Beam.................... 245
Dynamic radar cruise control ....... 314
Dynamic radar cruise control
with full-speed range ................... 302
LDA (Lane Departure Alert
with steering control) ................... 293
LKA (Lane-Keeping Assist)......... 283
PCS (Pre-Collision System) ....... 270
License plate lights
Light switch............................................. 241
Replacing light bulbs ........................ 610
Light
Automatic High Beam.................... 245
Cornering lights ................................. 242
Fog light switch ................................... 249
Headlight switch .................................. 241
Illuminated entry system.................... 511
Interior light list ................................... 508
Interior lights ....................................... 509
Luggage compartment light ..........136
Personal lights ...................................... 510
Replacing light bulbs ........................ 610
Turn signal lever ................................. 234
Vanity lights .......................................... 523K
L
* : Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL”.