Page 652 of 812
6527-3. Do-it-yourself maintenance
C-HR_OM_Europe_OM10528E
Wireless remote control/electronic key
battery
● Flathead screwdriver
● Small flathead screwdriver
● Lithium battery CR1620 (vehicles without a smart entry & start sys-
tem), or CR2032 (vehicles with a smart entry & start system)
Vehicles without a smart entry & start system
Remove the cover.
To prevent damage to the key,
cover the tip of the screwdriver with
a rag.
Remove the battery cover.
Replace the battery with a new one if it is depleted.
You will need the following items:
Replacing the battery
1
2
Page 654 of 812

6547-3. Do-it-yourself maintenance
C-HR_OM_Europe_OM10528E
Remove the depleted battery.
When removing the cover, if the
battery cannot be seen due to the
electronic key module attaching to
the upper cover, remove the elec-
tronic key module from the cover
so that the battery is visible as
shown in the illustration.
Use an appropriate sized flathead
screwdriver when removing the
battery.
Insert a new battery with the “+”
terminal facing up.
When installing, reverse the steps listed.
■ Use a CR1620 (vehicles without a smart entry & start system) or CR2032
(vehicles with a smart entry & start system) lithium battery
● Batteries can be purchased at any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer, local electrical appliance shops
or camera stores.
● Replace only with the same or equivalent type recommended by the manu-
facturer.
● Dispose of used batteries according to local laws.
■ If the key battery is depleted
The following symptoms may occur:
● The smart entry & start system (if equipped), push button start (if equipped)
and wireless remote control will not function properly.
● The operational range will be reduced.
3
4
Page 655 of 812
6557-3. Do-it-yourself maintenance
7
Maintenance and care
C-HR_OM_Europe_OM10528E
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 lithium battery
CAUTION :
RISK OF EXPLOSION IF BATTERY IS REPLASED 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.
Page 747 of 812
7478-2. Steps to take in an emergency
8
When trouble arises
C-HR_OM_Europe_OM10528E
If the electronic key does not operate properly
(vehicles with a smart entry & start system)
Use the mechanical key ( P. 146) in order to perform the following
operations:
Locks all the doors
Closes the windows (turn and
hold)*
Unlocks all the doors
Opens the windows (turn and
hold)*
*: These settings must be custom-
ized at any authorized Toyota
retailer or Toyota authorized
repairer, or any reliable repairer.
( P. 776)
If communication between the electronic key and vehicle is
interrupted ( P. 174) 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 can be opened and the engine can be started by following
the procedure below.
Locking and unlocking the doors
1
2
3
4
Page 753 of 812

7538-2. Steps to take in an emergency
8
When trouble arises
C-HR_OM_Europe_OM10528E
■ When recharging or replacing the battery
● Vehicles with a smart entry & start system: In some cases, it may not be
possible to unlock the doors using the smart entry & start system when the
battery is discharged. Use the wireless remote control or the mechanical
key to lock or unlock the doors.
● Vehicles with a smart entry & start system: 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.
● Vehicles with a smart entry & start system: The engine switch mode is mem-
orized by the vehicle. When the battery is reconnected, the system will
return to the mode it was in before the battery was discharged. Before dis-
connecting the battery, turn the engine switch off.
If you are unsure what mode the engine switch was in before the battery dis-
charged, be especially careful when reconnecting the battery.
● Vehicles with a Stop & Start system: For a while after the battery terminals
have been disconnected or reconnected, for a while after the battery has
been replaced, the Stop & Start system may not automatically stop the
engine for approximately 5 to 60 minutes.
■ When exchanging the battery (vehicles with a Stop & Start system)
Use a battery specified for use with the Stop & Start system and equivalent to
a genuine battery. If an unsupported battery is used, Stop & Start system
functions may be restricted to protect the battery.
Also, battery performance may decrease and the engine may not be able to
restart. Contact any authorized Toyota retailer or Toyota authorized repairer,
or any reliable repairer for details.
Page 781 of 812
7819-2. Customization
9
Vehicle specifications
C-HR_OM_Europe_OM10528E
■Smart entry & start system* and wireless remote control
( P. 155, 171)
*: If equipped
■Smart entry & start system*1 ( P. 171)
*1: If equipped
*2: For vehicles without an alarm
FunctionDefault settingCustomized
setting
Operation signal (emer-
gency flashers)OnOff–OO
Time elapsed before the
automatic door lock func-
tion is activated if a door is
not opened after being
unlocked
30 seconds
60 seconds
––O
120 seconds
Open door reminder
buzzer (When locking the
vehicle)
OnOff––O
123
FunctionDefault settingCustomized
setting
Smart entry & start sys-
temOnOff–OO
Smart door unlockingAll the doorsDriver’s door–OO
Number of consecutive
door lock operations*22 timesAs many as
desired––O
123
Page 782 of 812
7829-2. Customization
C-HR_OM_Europe_OM10528E
■Wireless remote control ( P. 155)
■Outside rear view mirrors (P. 198)
FunctionDefault settingCustomized
setting
Wireless remote controlOnOff––O
Unlocking operation
All doors
unlocked in
one step
Driver’s door
unlocked in
one step, all
doors
unlocked in
two step
–OO
123
FunctionDefault settingCustomized
setting
Automatic mirror folding
and extending operation
Linked to the
locking/
unlocking of
the doors
Off
––OLinked to
operation of
the engine
switch
123
Page 783 of 812
7839-2. Customization
9
Vehicle specifications
C-HR_OM_Europe_OM10528E
■Power windows ( P. 201)
*1: Vehicles without a smart entry & start system
*2: Vehicles with a smart entry & start system
■Turn signal lever ( P. 255)
FunctionDefault settingCustomized
setting
Key*1 or mechanical
key*2 linked operation
(open)
OffOn––O
Key*1 or mechanical
key*2 linked operation
(close)
OffOn––O
Wireless remote control
linked operation (open)OffOn––O
Wireless remote control
linked operation (close)OffOn––O
Key*1 or mechanical
key*2, wireless remote
control linked operation
signal (buzzer)
OnOff––O
123
FunctionDefault settingCustomized
setting
Times of flashing of the
lane change signal flash-
ers
3
Off
––O5
7
123