key battery LEXUS RC350 2015 Owner's Manual

5578-2. Steps to take in an emergency
8
When trouble arises
RC350/RCF_U (OM24636U)
OnceCon-
tinuous
An attempt was made to lock the
doors using the smart access system
with push-button start while the
electronic key was still inside the
vehicle.
Retrieve the electronic key
from the vehicle and lock the
doors again.
An attempt was made to lock either
door by opening a door and putting
the inside lock button into the lock
position, then closing the door with
the electronic key still inside the
vehicle.
Retrieve the electronic key
from the vehicle and lock the
doors again.
Once
The electronic key has a low battery.
Replace the electronic key bat-
tery. ( P. 5 0 7 )
Once
The steering lock could not be
released within 3 seconds of the
engine switch being pressed.
 Press the engine switch while
depressing the brake pedal and
moving the steering wheel left
and right.
Once
Indicates a malfunction in the smart
access system with push-button
start
Have the vehicle inspected by
your Lexus dealer.
Interior
buzzerExteriorbuzzerWa r n i n g m e s s a g eDetails/Actions
(Flashes)
(Flashes)
(Flashes)

5878-2. Steps to take in an emergency
8
When trouble arises
RC350/RCF_U (OM24636U)
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. 1 9 3 )
●There may be a malfunction in the engine immobilizer system. ( P. 76 )
One of the following may be the cause of the problem:
●The battery may be discharged. ( P. 5 9 3 )
●The battery terminal connections may be loose or corroded.
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. 588)
If the engine will not start
If the engine will not start even though correct starting procedures are being
followed ( P. 193), 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

5908-2. Steps to take in an emergency
RC350/RCF_U (OM24636U)
Use the mechanical key (P. 131) in order to perform the following operations:
■Unlocking the door
Insert the mechanical key while
pulling on the driver’s door han-
dle.
Unlocking the door.
Remove the key, return the handle, and then pull the handle again.
If the electronic key does not operate properly
If communication between the electronic key and vehicle is interrupted ( P.
148) or the electronic key cannot 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 and trunk can be opened and the
engine can be started by fo llowing the procedure below.
Locking and unlocking the doors and opening the trunk
1
2
3

5928-2. Steps to take in an emergency
RC350/RCF_U (OM24636U)
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 switch.
When the electronic key is detected, a
buzzer sounds and the engine switch
will turn to IGNITION ON mode.
When the smart access system with
push-button start is deactivated in cus-
tomization setting, the engine switch will
turn to ACCESSORY mode.
Firmly depress the brake pedal and check that is shown on the multi-
information display.
Press the engine switch.
In the event that the engine still cannot be started, contact your Lexus dealer.
■Stopping the engine
Shift the shift lever to P and press the engine switch as you normally do when stopping
the engine.
■Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the electronic
key battery be replaced immediatel y when the battery is depleted. (P. 5 0 7 )
■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. 1 9 4 )
■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. 6 3 5 )
●Check if battery-saving mo de is set. If it is set, cancel the function. ( P. 1 4 8 )
Starting the engine
1
2
WA R N I N G
■When using the mechanical key and operating the power windows or moon roof
Operate the power window or moon roof afte r checking to make sure that there is no
possibility of any passenger having any of their body parts caught in the window or
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 power window or moon roof.
3
4
3

5958-2. Steps to take in an emergency
8
When trouble arises
RC350/RCF_U (OM24636U)
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 recharging or replacing the battery
●Make sure that the key is not inside the vehicle when recharging or replacing the bat-
tery. The key may be locked in the vehicle if the alarm is activated. ( P. 7 9 )
●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.
7

660
RC350/RCF_U (OM24636U)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 3 2 )
●If you lose your electronic keys, the risk of vehicle theft increases significantly.
Contact your Lexus dealer immediately. ( P. 1 3 4 )
●Is the electronic key battery weak or depleted? ( P. 5 0 7 )
●Is the engine switch in IGNITION ON mode?
When locking the doors, turn the engine switch off. ( P. 1 9 4 )
●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 )
●The function to prevent the electronic ke y from being left inside the trunk will
operate and you can open the trunk as usual. Take the key out from the trunk.
( P. 1 4 3 )
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 trunk lid is closed with the electronic key left inside

661What to do if... (Troubleshooting)
RC350/RCF_U (OM24636U)
●Did you press the engine switch while firmly depressing the brake pedal?
(P. 1 9 3 )
●Is the shift lever in P? ( P. 1 9 6 )
●Is the electronic key anywhere detectable inside the vehicle? ( P. 1 4 6 )
●Is the steering wheel unlocked? ( P. 1 9 6 )
●Is the electronic key battery weak or depleted?
In this case, the engine can be started in a temporary way. (P. 5 9 2 )
●Is the battery discharged? ( P. 5 9 3 )
●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. 5 8 9 )
●It is locked automatically to prevent theft of the vehicle. ( P. 1 9 6 )
●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. 171)
●The auto power off function will be oper ated if the vehicle is left in ACCES-
SORY or IGNITION ON mode (the engine is not running) for a period of
time. ( P. 1 9 6 )
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

666Alphabetical index
RC350/RCF_U (OM24636U)
Back-up lightsReplacing light bulbs ......................... 518
Wattage ................................................... 619
Battery....................................................... 487 Battery checking ................................487
If the vehicle battery is discharged.................................... 593
Preparing and checking before winter ..................................................... 315
Warning light ...................................... 533
Blind Spot Monitor (BSM)................ 297
Bluetooth
®
Audio system .......................................376
Hands-free system (for cellular phone) ........................378
Brake Fluid.......................................................... 486
Parking brake...................................... 205
Warning light ...................................... 533
Brake assist ............................................. 282
Break-in tips............................................... 181
Brightness control Instrument panel light control ............................................ 94, 101
BSM (Blind Spot Monitor)................ 297 Card key ....................................................130
Care................................................458, 463
Aluminum wheels .............................. 459
Exterior ...................................................458
Interior ..................................................... 463
Seat belts................................................ 464
Cargo capacity .......................................190
Cargo hooks ...........................................434
CD player................................................ 352
Chains ......................................................... 316
Child restraint system ............................ 57 Child seats definition .......................... 57
Child seats installation............... 64, 70
Front passenger occupant classification system......................... 50
Installing a CRS to the passenger seat ............................. 61
Installing a CRS to the rear seat ........................................................... 63
Installing CRS with LATCH anchors ....................... 71
Installing CRS with seat belts ......... 64
Installing CRS with top tether strap..........................73
BC

667Alphabetical index
RC350/RCF_U (OM24636U)
Child safety ................................................ 56Airbag precautions .............................. 42
Battery precautions .............489, 596
Child restraint system ......................... 57
How your child should wear the seat belt .......................................... 36
Installing child restraints..................... 57
Moon roof precautions.................... 178
Power window lock switch .............. 171
Power window precautions ...........174
Removed electronic key battery precautions.............. 508
Seat belt extender precautions ........................................... 39
Seat belt precautions ..........................38
Seat heater precautions..................425
Trunk precautions............................... 144 Cleaning .......................................458, 463
Aluminum wheels .............................. 459
Exterior ...................................................458
Interior ..................................................... 463
Seat belts................................................ 464
Clock......................................................... 436
Coat hooks ............................................. 439
Compass .................................................. 447
Condenser.............................................. 485
Console box ............................................432
Cooling system ..................................... 484 Engine overheating .......................... 597
Cruise control Cruise control ..................................... 229
Dynamic radar cruise control ..... 233
Cup holders............................................ 433
Current fuel consumption ........ 106, 107
Curtain shield airbags ........................... 40
Customizable features ...................... 635

669Alphabetical index
RC350/RCF_U (OM24636U)
E-mail......................................................... 386
Eco drive mode ..................................... 278
Eco Driving Indicator............................. 88
Eco Driving Indicator Light ....... 107, 119
Eco driving meter .................................... 96
EDR (Event data recorder) ...................10
Elapsed time .................................. 106, 107
Electric Power Steering (EPS) ....... 283Warning light .......................................534
Electronic key ......................................... 130 Battery-saving function .................... 148
If the electronic key does not operate properly............................ 590
Replacing the battery ...................... 507 Emergency flashers .............................522
Emergency tire puncture
repair kit.................................................574
Emergency, in case of If a warning buzzer sounds ................................................. 533
If a warning light turns on .............. 533
If a warning message is displayed ........................................539
If the electronic key does not operate properly ....... 590
If the engine will not start ............... 587
If the shift lever cannot be shifted from P ........... 589
If the vehicle battery is discharged.........................................593
If you have a flat tire ............. 560, 574
If you think something is wrong ................................................531
If your vehicle becomes stuck..................................................... 600
If your vehicle has to be stopped in an emergency.......... 523
If your vehicle needs to be towed ....................................... 524
If your vehicle overheats ................ 597
E