key Lexus CT200h 2015 (in English) Workshop Manual

486
CT200h_OM_OM76174U_(U)7-3. Do-it-yourself maintenance
■Before recharging
When recharging, the 12-volt battery produces hydrogen gas which is flammable and
explosive. Therefore, observe the following precautions before recharging:
●If recharging with the 12-volt battery installed on the vehicle, be sure to disconnect the
ground cable.
●Make sure the power switch on the charger is off when connecting and disconnecting
the charger cables to the 12-volt battery.
■After recharging/reconnecting the 12-volt battery
●Unlocking the doors using the smart access system with push-button start may not be
possible immediately after reconnecting the 12-volt battery. If this happens, use the
wireless remote control or the mechanical key to lock/unlock the doors.
●Start the hybrid system with the power switch in ACCESSORY mode. The hybrid sys-
tem may not start with the power switch turned off. However, the hybrid system will
operate normally from the second attempt.
●The power switch mode is recorded by the vehicle. If the 12-volt battery is reconnected,
the vehicle will return the power switch mode to the status it was in before the 12-volt
battery was disconnected. Make sure to turn off the power before disconnect the 12-
volt battery. Take extra care when connecting the 12-volt battery if the power switch
mode prior to discharge is unknown.
●Restart the hybrid system, depress the brake
pedal, and confirm that it is possible to
shift into each shift position.
If the system will not start even after multiple attempts at all methods above, contact your
Lexus dealer.
WA R N I N G
■Chemicals in the 12-volt battery
The 12-volt battery contains poisonous and corrosive sulfuric acid and may produce
hydrogen gas which is flammable and explosive. To reduce the risk of death or serious
injury, take the following precautions while working on or near the 12-volt battery:
●Do not cause sparks by touching the 12-volt battery terminals with tools.
●Do not smoke or light a match near the 12-volt battery.
●Avoid contact with eyes, skin and clothes.
●Never inhale or swallow electrolyte.
●Wear protective safety glasses when working near the 12-volt battery.
●Keep children away from the 12-volt battery.
■Where to safely charge the 12-volt battery
Always charge the 12-volt battery in an open area. Do not charge the 12-volt battery in
a garage or closed room where there is insufficient ventilation.
■How to recharge the 12-volt battery
Only perform a slow charge (4.2 A or less). The 12-volt battery may explode if charged
at a quicker rate.

502
CT200h_OM_OM76174U_(U)7-3. Do-it-yourself maintenance
Electronic key battery
●Flathead screwdriver
●Lithium battery CR1632
Take out the mechanical key.
Remove the cover.
To prevent damage to the key, cover the
tip of the screwdriver with a rag.
Remove the depleted battery.
Insert a new battery with the “+” termi-
nal facing up.
Replace the battery with a new one if it is depleted.
You will need th
e following items:
Replacing the battery
1
2
3

CT200h_OM_OM76174U_(U)
5037-3. Do-it-yourself maintenance
7
Maintenance and care
■Use a CR1632 lithium battery
●Batteries can be purchased at your Lexus dealer, local electrical appliance shops or
camera stores.
●Replace only with the same or equivalent type recommended by the manufacturer.
●Dispose of used batteries according to the local laws.
■When the card key battery needs to be replaced (if equipped)
The battery for the card key is available only at Lexus dealers. Your Lexus dealer can
replace the battery for you.
■If the electronic key battery is depleted
The following symptoms may occur:
●The smart access system with push-button start and wireless remote control will not
function properly.
●The operational range will be reduced.
WA R N I N G
■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.
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.

519
CT200h_OM_OM76174U_(U)
8When trouble arises
8-1. Essential informationEmergency flashers .................. 520
If your vehicle has to be stopped in an
emergency...................................521
8-2. Steps to take in an emergency
If your vehicle needs to be towed ..................................... 522
If you think something is wrong ........................................... 526
If a warning light turns on or a warning buzzer
sounds.......................................... 527
If a warning message is displayed..................................... 534
If you have a flat tire................... 547
If the hybrid system will not start ............................................... 557
If the electronic key does not operate properly ..................... 559
If the 12-volt battery is discharged ...................................561
If your vehicle overheats ......... 565
If the vehicle becomes stuck ............................................. 569

5438-2. Steps to take in an emergency
CT200h_OM_OM76174U_(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)

5448-2. Steps to take in an emergency
CT200h_OM_OM76174U_(U)
Once3 times
The electronic key was carried out-
side the vehicle and a door other
than the driver’s door was opened
and closed while the power switch
was in a mode other than off.
→Bring the electronic key back
into the vehicle.
The electronic key was carried out-
side the vehicle and the driver’s door
was opened and closed while the
shift position P was selected without
turning off the power switch.
→Tu r n t h e p o w e r s w i t c h o f f .
→ Bring the electronic key back
into the vehicle.
Once
Sounds
once
for 5
sec-
ondsAn attempt was made to exit the
vehicle with the electronic key and
lock the doors without first turning
the power switch off.
→Turn the power switch off and
lock the doors again.
Once
An attempt was made to turn the
power switch off when the shift posi-
tion was not in P.
→To turn off the hybrid system,
first shift the shift position to P
and then turn the power switch
off.
Interior
buzzerExteriorbuzzerWa r n i n g m e s s a g eDetails/Actions
(Flashes)
(Displayed alternately)
(Flashes)
(Flashes)

5458-2. Steps to take in an emergency
CT200h_OM_OM76174U_(U)
8
When trouble arises
Once
Sounds
once
for 5
sec-
onds
• An attempt was made to lock the doors using the smart access sys-
tem with push-button start while
the electronic key was still inside
the vehicle.
• An attempt was made to lock either front door by opening a
door and putting the inside lock
button into the lock position, then
closing the door with the elec-
tronic key still inside the vehicle.
→ Retrieve the electronic key
from the vehicle and lock the
doors again.
Once
• When the doors were unlocked
with the mechanical key and then
the power switch was pressed, the
electronic key could not be
detected in the vehicle.
• The electronic key could not be
detected in the vehicle even after
the power switch was pressed two
consecutive times.
→ Touch the electronic key to the
power switch while depressing
the brake pedal.
Once
The driver’s door was opened and
closed with the power switch turned
off and then the power switch was
put in ACCESSORY mode twice
without the hybrid system being
started.
→Press the power switch while
depressing the brake pedal.
During a hybrid system starting pro-
cedure in the event that the elec-
tronic key was not functioning
properly ( →P. 5 6 0 ) , t h e p o w e r
switch was touched with the elec-
tronic key.
→ Press the power switch within 10
seconds of the buzzer sounding.
Interior
buzzerExteriorbuzzerWa r n i n g m e s s a g eDetails/Actions
(Flashes)
(Flashes)
(Flashes)

5468-2. Steps to take in an emergency
CT200h_OM_OM76174U_(U)
■Wa r n i n g m e s s a g e s
→P. 5 4 2
■Warning buzzer
→P. 5 3 1
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 2 )
Interior
buzzerExteriorbuzzerWa r n i n g m e s s a g eDetails/Actions
(Flashes)

557
CT200h_OM_OM76174U_(U)
8
When trouble arises
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. 559)
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle. ( →P. 7 0 )
●There may be a malfunction in the immobilizer system.* (→ P. 7 3 )
●There may be a malfunction in the shift control system.* (→ P. 1 5 8 , 5 3 7 )
●The hybrid system may be malfunctioning due to an electrical problem such
as electronic key battery depletion or a blown fuse. However, depending on
the type of malfunction, an interim measure is available to start the hybrid sys-
tem. ( →P. 5 5 8 )
*: 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 1 )
●The 12-volt battery terminal connec tions may be loose or corroded.
( → P. 484)
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.

559
CT200h_OM_OM76174U_(U)
8
When trouble arises
8-2. Steps to take in an emergency
If the electronic key does 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 customized at your Lexus dealer.
If communication between the electronic key and vehicle is interrupted
(→ P. 115) 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 can be opened and
the hybrid system can be started by following the procedure below.
Locking and unlocking the door s and key linked functions
1
2
3
4