2016 Lexus CT200h key battery

5458-2. Steps to take in an emergency
CT200h_OM_OM76197U_(U)
8
When trouble arises
Interior buzzerExteriorbuzzerWa r n i n g m e s s a g eDetails/Actions

Power was turned off due to the
automatic power off function.
 Next time, start the hybrid sys-
tem and keep it on for approxi-
mately 5 minutes or more to
recharge the 12-volt battery.
Con-
tinuous  The driver’s door was opened while
any shift position other than P was
selected without turning off the
power switch.

Shift the shift position to P.
Con-
tinuousCon-
tinuous
The electronic key was carried out-
side the vehicle and the driver’s door
was opened and closed while any
shift position other than P was
selected without turning off the
power switch.
Shift the shift position to P.
 Bring the electronic key back
into the vehicle.
Once  An attempt was made to start the
hybrid system without the electronic
key being present, or the electronic
key was not functioning normally.

Start the hybrid system with the
electronic key present.
An attempt was made to drive when
the regular key was not inside the
vehicle.
 Confirm that the electronic key
is inside the vehicle.
(Flashes)
(Flashes)
(Flashes)

5488-2. Steps to take in an emergency
CT200h_OM_OM76197U_(U)
■Wa r n i n g m e s s a g e s
P. 5 4 4
■Warning buzzer
P. 5 3 3
Once
An attempt was made to start the
hybrid system with the shift position
in N.
 Shift the shift position to P and
start the hybrid system.
OnceThe electronic key has a low battery.
Replace the electronic key bat-
tery. ( P. 5 0 4 )
Interior
buzzerExteriorbuzzerWa r n i n g m e s s a g eDetails/Actions
(Flashes)

558
CT200h_OM_OM76197U_(U)8-2. Steps to take in an emergency
If the hybrid system will not start
One of the following may be the cause of the problem:
●The electronic key may not be functioning properly.* (
 P. 5 6 0 )
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle. ( P. 7 1 )
●There may be a malfunction in the immobilizer system.* ( P. 74 )
●There may be a malfunction in the shift control system.* ( P. 1 5 8 , 5 3 9 )
●The hybrid system may be malfunctioni ng due to an electrical problem such
as electronic key battery depletion or a blown fuse. However, depending on
the type of malfunction, an interim meas ure is available to start the hybrid sys-
tem. ( P. 5 5 9 )
*: It may not be possible to shift the shift position other than P.
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. ( P. 5 6 2 )
●The 12-volt battery terminal connections may be loose or corroded.
( P. 4 8 6 )
Reasons for the hybrid system not starting vary depending on the situation.
Check the following and perform the appropriate procedure:
The hybrid system will not start ev en though the correct starting proce-
dure is being followed. ( P. 156)
The interior lights and headlights are dim, or the horn does not sound or
sounds at a low volume.

560
CT200h_OM_OM76197U_(U)8-2. Steps to take in an emergency
If the electronic key do
es not operate properly
Use the mechanical key ( P. 1 0 1 ) i n
order to perform the following opera-
tions:
Locks all the doors
Closes the windows
* (turn and hold)
Unlocks the door
Turning the key rearward unlocks the
driver’s door. Turning the key once again
within 3 seconds unlocks the other
doors.
Opens the windows* (turn and hold)
*: These settings must be cust omized at your Lexus dealer.
If communication between the electron ic key and vehicle is interrupted
(  P. 115) or the electronic key canno t 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 hybrid system can be started by following the procedure below.
Locking and unlocking the doors and key linked functions
1
2
3
4

5618-2. Steps to take in an emergency
CT200h_OM_OM76197U_(U)
8
When trouble arises
Depress the brake pedal.
Touch the Lexus emblem side of the
electronic key to the power switch.
If any of the doors is opened or closed
while the key is being touched to the
switch, an alarm will sound to indicate
that the start function cannot detect the
electronic key.
Press the power switch within 10 second s of the buzzer sounding, keeping the
brake pedal depressed.
In the event that the hybrid system st ill cannot be operated, contact your Lexus
dealer.
■Stopping the hybrid system
Set the parking brake, shift the shift position to P and press the power switch as you nor-
mally do when stopping the hybrid system.
■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 4 )
■Changing power switch modes
Within 10 seconds of the buzzer sounding, release the brake pedal and press the power
switch.
The hybrid system does not start and mode s will be changed each time the switch is
pressed. ( P. 1 5 7 )
Starting the hybrid system
1
2
WA R N I N G
■When using the mechanical key and operating the power windows
Operate the power window after checking to make sure that there is no possibility of
any passenger having any of their body parts caught in the window.
Also, do not allow children to operate the mech anical key. It is possible for children and
other passengers to get caught in the power window.
3

562
CT200h_OM_OM76197U_(U)8-2. Steps to take in an emergency
If the 12-volt battery is discharged
If you have a set of jumper (or booster)
cables and a second vehicle with a 12-volt
battery, 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, depe nding on the situa-
tion, the alarm may activate and doors
locked. ( P. 77)
Open the hood ( P. 4 7 5 ) a n d f u s e
box cover.
Open the exclusive jump starting
terminal cover.
The following procedures may be used to start the hybrid system if the vehi-
cle’s 12-volt battery is discharged.
You can also call your Lexus dealer or a qualified repair shop.
1
2
3

612What to do if... (Troubleshooting)
CT200h_OM_OM76197U_(U)
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 0 2 )
●If you lose your electronic keys, the risk of vehicle theft increases significantly.
Contact your Lexus dealer immediately. ( P. 1 0 4 )
●Is the electronic key battery weak or depleted? ( P. 5 0 4 )
●Is the power switch in ON mode?
When locking the doors, turn the power switch off. ( P. 1 5 7 )
●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 1 5 )
●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 0 8 )
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

613What to do if... (Troubleshooting)
CT200h_OM_OM76197U_(U)
●Did you press the power switch while firmly depressing the brake pedal?
(P. 1 5 6 )
●Is the shift position in P? ( P. 1 5 6 )
●Is the electronic key anywhere detectable inside the vehicle? ( P. 1 1 4 )
●Is the electronic key battery weak or depleted?
In this case, the hybrid system can be started in a temporary way. ( P. 5 6 1 )
●Is the 12-volt battery discharged? ( P. 5 6 2 )
●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 3 7 )
●The auto power off function will be operated if the vehicle is left in
ACCESSORY or ON mode (the hybrid system is not operating) for a period
of time. ( P. 1 5 8 )
If you think something is wrong
The hybrid system does not start
The windows do not open or close by operating the power window
switches
The power switch is turned off automatically