2017 LEXUS RC300H remote start

5137-3. Do-it-yourself maintenance
7
Maintenance and care
RC300h_EE(OM24740E)
WARNING
■Removed battery and other parts
These parts are small and if swallowed by a child, they can cause choking. Keep away from children. Failure to do so could result in death or serious injury.
■Certification for the smart entry & start system
CAUTION: RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE.
DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS
NOTICE
■For normal operation after replacing the battery
Observe the following precautions to prevent accidents:
●Always work with dry hands.
Moisture may cause the battery to rust.
●Do not touch or move any other component inside the remote control.
●Do not bend either of the battery terminals.

5788-2. Steps to take in an emergency
RC300h_EE(OM24740E)
Use the mechanical key (P. 139) 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.
157) or the electronic key cannot be used because the battery is depleted, the
smart entry & start system and wireless remote control cannot be used. In
such cases, the doors and trunk can be opened and the hybrid system can be
started by following the procedure below.
Locking and unlocking the doors and opening the trunk
1
2
3

5848-2. Steps to take in an emergency
RC300h_EE(OM24740E)
Make sure the “READY” indicator comes on. If the indicator does not come
on, contact any authorized Lexus dealer or repairer, or another duly qualified
and equipped professional.
Once the hybrid system has started, remove the jumper cables in the exact
reverse order from which they were connected.
Once the hybrid system starts, have the vehicle inspected at any authorized
Lexus dealer or repairer, or another duly qualified and equipped professional as
soon as possible.
■Starting the hybrid system when the 12-volt battery is discharged
The hybrid system cannot be started by push-starting.
■To prevent 12-volt battery discharge
●Turn off the headlights and the audio system while the hybrid system 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 12-volt battery
The electricity stored in the 12-volt battery will discharge gradually even when the vehicle
is not in use, due to natural discharge and the draining effects of certain electrical appli- ances. If the vehicle is left for a long time, the 12-volt battery may discharge, and thehybrid system may be unable to start. (The 12-volt battery recharges automatically while
the hybrid system is operating.)
■When recharging or replacing the 12-volt battery
●In some cases, it may not be possible to unlock the doors using the smart entry & start
system when the 12-volt battery is discharg ed. Use the wireless remote control or the mechanical key to lock or unlock the doors.
●The hybrid system may not start on the first attempt after the 12-volt battery has
recharged but will start normally after the second attempt. This is not a malfunction.
●The power switch mode is memorized by the vehicle. When the 12-volt battery is reconnected, the system will return to the mod e it was in before the 12-volt battery was
discharged. Before disconnecting the 12-v olt battery, turn the power switch off. If you are unsure what mode the power switch was in before the 12-volt battery dis-charged, be especially careful when reconnecting the 12-volt battery.
8
9

6109-2. Customization
RC300h_EE(OM24740E)
■Door lock ( P. 144, 150, 578)
■Smart entry & start system and wireless remote control (P. 144, 150)
FunctionDefault settingCustomized setting
Unlocking using a mechanical key
Both side
doors unlocked in one step
Driver’s door unlocked in one step, both side
doors unlocked in two steps
——O
Speed-detecting automatic doorlock functionOnOffO—O
Shifting gears to position other
than P locks both side doorsOffOnO—O
Shifting gears to P unlocks both side doorsOffOnO—O
Opening driver's door unlocksboth side doorsOnOffO—O
Locking/unlocking of the trunk
when both side doors are locked/unlockedOnOff——O
123
FunctionDefault settingCustomized setting
Operation signal (Emergency flashers)OnOffO—O
Time elapsed before automatic
door lock function is activated if door is not opened after beingunlocked
30 seconds
60 seconds
——O120 seconds
Open door warning buzzerOnOff——O
Welcome light illumination con-
trolOnOff——O
123

611
9
9-2. Customization
Vehicle specifications
RC300h_EE(OM24740E)
■Smart entry & start system ( P. 144, 150, 155)
■Wireless remote control (P. 144, 150)
■Driving position memory* (P. 183)
*: If equipped
FunctionDefault settingCustomized setting
Smart entry & start systemOnOffO—O
Smart door unlockingBoth side doorsDriver's doorO—O
Number of consecutive doorlock operationsAs many as desired2 times——O
123
FunctionDefault settingCustomized setting
Wireless remote controlOnOff——O
Unlocking operation
Both side doors
unlocked in one step
Driver's door
unlocked in one step, both side doors unlocked in
two steps
O—O
Trunk unlocking operationPress and hold (short)
One short press
——O
Push twice
Press and hold (long)
Off
123
FunctionDefault settingCustomized setting
Selecting the door linking drivingposition memory with door
unlock operation
Driver's doorBoth side doors——O
123

6169-2. Customization
RC300h_EE(OM24740E)
■Vehicle customization
●When the speed-detecting automatic door lock and shift-linked automatic door lock are both on, the door lock operates as follows.
• When shifting the shift lever to any position other than P, both side the doors will be
locked. • If the vehicle is started with both side doors locked, the speed-detecting automaticdoor lock will not operate.
• If the vehicle is started with any door unlocked, the speed-detecting automatic door lock will operate.
●When the smart entry & start system is off, the entry unlock function cannot be custom-ized.
●When the doors remain closed after unlocking the doors and the timer activated auto-
matic door lock function activates, signals will be generated in accordance with the operational signal (Emergency flashers) function setting.
●Some settings can be changed using a switch or the audio system screen. If a setting is
changed using a switch, the changed setting will not be reflected on the audio system screen until the power switch is turned off and then to ON mode.
■When customizing using the Remote Touch or Lexus Display Audio controller
Stop the vehicle in a safe place, apply the parking brake, and shift the shift lever to P. Also, to prevent 12-volt battery discharge, leave the hybrid system operating while customiz-ing the features.
WARNING
■During customization
As the hybrid system needs to be operating during customization, ensure that the vehi- cle is parked in a place with adequate ventilation. In a closed area such as a garage,exhaust gases including harmful carbon monoxide (CO) may collect and enter the
vehicle. This may lead to death or a serious health hazard.
NOTICE
■During customization
To prevent 12-volt battery discharge, ensure that the hybrid system is operating while customizing features.

622What to do if... (Troubleshooting)
RC300h_EE(OM24740E)
●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. 196)
●The auto power off function will be operated if the vehicle is left in ACCES-
SORY or ON mode (the hybrid system is not operating) for a period of time.
( P. 217)
●The seat belt reminder light is flashing
Are the driver and the front passenger wearing the seat belts? ( P. 539)
●The parking brake indicator is on
Is the parking brake released? ( P. 230)
Depending on the situation, other types of warning buzzer may also sound.
( P. 537, 542)

●Did anyone inside the vehicle open a door or anything move inside the vehicle
during setting the alarm?
The sensor detects them and the alarm sounds. ( P. 102)
Do one of the following to deactivate or stop the alarm:
• Unlock the doors or open the trunk using the entry function or wireless remote con-
trol. • Start the hybrid system.
The windows do not open or close by operating the power window
switches
The power switch is turned off automatically
A warning buzzer sounds during driving
An alarm is activated and th e horn sounds (if equipped)

626Alphabetical index
RC300h_EE(OM24740E)
Seat heater precautions ................. 444
Trunk precautions ............................. 153
Cleaning ....................................... 460, 464
Aluminum wheels ................................461
Exterior................................................... 460
Interior ..................................................... 464
Seat belts................................................465
Clock ......................................................... 456
Coat hooks ..............................................458
Condenser ............................................ 480
Console box ...........................................450
Cooling system ...................................... 478
Engine overheating ..........................587
Hybrid system overheating ..........587
Cruise control
Cruise control ..................................... 253
Dynamic radar cruise control ..... 257
Cup holders ............................................. 451
Current fuel consumption.................. 124
Curtain shield airbags ........................... 43
Customizable features ...................... 608
DAB (Digital Audio Broadcast) ..... 369
Daytime running light system ......... 233
Defogger
Outside rear view mirrors ............ 438
Rear window........................................ 438
Windshield ........................................... 438
Differential............................................... 603
Digital Audio Broadcast (DAB) ..... 369
Dimensions ............................................. 596
Display
Drive information................................. 124
Dynamic radar cruise control ......257
LDA (Lane Departure Alert) ....... 274
Multi-information display................... 121
Warning message ............................ 542
Distance ..................................................... 124
Do-it-yourself maintenance ............. 469
Door courtesy lights
Location ................................................. 446
Door lock
Doors......................................................... 144
Smart entry & start system ............. 155
Wireless remote control ................. 138
Doors...........................................................144
Automatic door locking and
unlocking system ............................. 147
Door lock ................................................ 144
Open door warning buzzer .......... 145
Open door warning light .............. 539
Outside rear view mirrors .............. 193
Side windows ........................................ 196
Drive info 1/Drive info 2 ......................126
Drive information ................................... 124
Resetting .................................................. 124
D