2023 HYUNDAI TUCSON HYBRID battery replacement

05
5-11
Battery replacement
If the Smart Key is not working properly,
try replacing the battery with a new one.
Battery Type: CR2032
To replace the battery:
ODN8059266ODN8059266
Battery Type: CR2032
To replace the battery:
1. Remove the mechanical key.
2. Use a slim tool or utility blade to pry open the cover of the smart key. Use
caution not to damage the smart key.
3. Remove the old battery and insert the new battery. Make sure the battery
position is correct.
4. Reinstall the rear cover of the smart key.
If you suspect your smart key might have
sustained some damage, or you feel
your smart key is not working correctly,
it is recommended that you contact an
authorized HYUNDAI dealer.
WARNING
THIS PRODUCT CONTAINS A BUTTON
BATTERY.
If swallowed, a lithium button battery
can cause severe or fatal injuries within
2 hours. Keep batteries out of reach of
children.
If you think batteries may have been
swallowed or placed inside any part
of the body, seek immediate medical
attention.
Information
An inappropriately disposed
battery can be harmful to
the environment and human
health. Dispose of the battery
according to your local law(s) or
regulations.
Immobilizer System (if
equipped)
The immobilizer system helps protect
your vehicle from theft. If an improperly
coded key (or other device) is used, the
engine’s fuel system is disabled.
When the Engine Start/Stop button
is pressed to the ON position, the
immobilizer system indicator should
come on briefly, then go off. If the
indicator starts to blink, the system does
not recognize the coding of the key.
Place the ignition switch to the LOCK/
OFF position, then place the ignition
switch to the ON position again.
The system may not recognize your
key’s coding if another immobilizer
key or other metal object (for example,
key chain) is near the key. The engine
may not start because the metal may
interrupt the transponder signal from
transmitting normally.
If the system repeatedly does not
recognize the coding of the key, it is
recommended that you contact your
HYUNDAI dealer.
Do not attempt to alter this system
or add other devices to it. Electrical
problems could result that may make
your vehicle inoperable.

Convenience Features5-74
Resetting the power liftgate
In some circumstances resetting the
power liftgate operation may need to
be performed. Some instances where
resetting the power liftgate may be
required include:
• When the 12-volt battery is recharged
• When the 12-volt battery is reinstalled after removal or replacement (for
Plug-in Hybrid vehicle)
• When the related fuse is reinstalled after removal or replacement
ONX4E050145ONX4E050145
1. With the engine off or running, put the gear in P (Park).
2. Press the power liftgate open/close inner button (B) and outer button (A)
simultaneously until a chime sounds.
3. Slowly close the liftgate manually.
4. Press the power liftgate open/close outer button. The power liftgate will
open with a chime sound.
Wait until the liftgate fully opens to
complete resetting. If the liftgate
stops before it is fully open, resetting
cannot be completed.
Information
If the power liftgate does not operate
properly after the above procedure, have
the system inspected by an authorized
HYUNDAI dealer.
Emergency liftgate safety release
ONX4E050059RONX4E050059R
To unlock and open the liftgate manually
from inside the luggage compartment,
perform the following procedure:
1. Insert a long, flat object, such as a key into the opening at the bottom of the
liftgate.
2. Slide the latch in the direction of the arrow to unlock the liftgate.
3. Push the liftgate to open.
WARNING
• For emergencies, be fully aware
of the location of the emergency
liftgate safety release latch in the
vehicle and how to open the liftgate
if you are accidentally locked in the
luggage compartment.
• No one, including animals, should
be allowed to occupy the luggage
compartment of the vehicle at any
time. The luggage compartment is a
very dangerous location in the event
of an accident.
• Use the release latch for
emergencies only. Use extreme
caution, especially while the vehicle
is in motion.

Convenience Features5-82
• When using an approved portable
fuel container, be sure to place the
container on the ground prior to
refueling. Static electricity discharge
from the container can ignite fuel
vapors causing a fire.
Once refueling has begun, contact
between your bare hand and the
vehicle should be maintained until
the filling is complete.
• Use only approved portable plastic
fuel containers designed to carry and
store fuel.
• When refueling, always shift the
gear to the P (Park) position, set
the parking brake, and press the
Engine Start/Stop button to the
OFF position. Sparks produced by
electrical components related to the
engine can ignite fuel vapors causing
a fire.
• Do not use matches or a lighter and
do not smoke or leave a lit cigarette
in your vehicle while at a gas station,
especially during refueling.
• Do not over-fill or top-off your
vehicle tank, which can cause fuel
spillage.
• If a fire breaks out during refueling,
leave the vicinity of the vehicle, and
immediately contact the manager
of the gas station and then contact
the local fire department. Follow any
safety instructions they provide.
• If pressurized fuel sprays out, it can
cover your clothes or skin and thus
subject you to the risk of fire and
burns. Always remove the fuel cap
carefully and slowly. If the cap is
venting fuel or if you hear a hissing
sound, wait until the condition stops
before completely removing the cap.
• Always check that the fuel cap is
installed securely to prevent fuel
spillage in the event of an accident. Information
Make sure to refuel your vehicle according
to the “Fuel Requirements” section in
suggested in chapter 1.
NOTICE
• Do not spill fuel on the exterior
surfaces of the vehicle. Any type of
fuel spilled on painted surfaces may
damage the paint.
• If the fuel filler cap requires
replacement, use only a genuine
HYUNDAI cap or the equivalent
specified for your vehicle. An
incorrect fuel filler cap can result
in a serious malfunction of the fuel
system or emission control system.
WARNING
In case of using EV drive mode for a
certain time without running engine,
EMM (Engine Maintenance Mode) will
automatically activate by the system to
protect the fuel system and the engine.
Therefore, even though if it is possible
to use EV drive mode with enough
battery power, the engine may run by
the system to protect fuel system and
the engine. If you leave the fuel without
refueling or using for over 6 months, the
remained fuel in the fuel system may
be deteriorated. From this, corrosion
or blocking problem may occur. It is
recommended using minimum 40 % of
remained fuel at least every 6 months
by selecting Hybrid (CS)mode and
refuel the vehicle with new fuel.

Convenience Features5-86
Turn signals and lane change signals
ODN8A059207ODN8A059207
To signal a turn, push down on the lever
for a left turn or up for a right turn in
position (A).
If an indicator stays on and does not flash
or if it flashes abnormally, one of the turn
signal bulbs may be burned out and will
require replacement.
One touch turn signal
To use One Touch Turn Signal push the
turn signal le
ver up or down to position
(B) and then release it.
The lane change signals will blink 3, 5 or
7 times.
You can enable the One Touch Turn
Signal function or choose the number
of blinking by selecting ‘Setup
Ÿ User
Settings
Ÿ Lights
Ÿ One Touch Turn Signal

Ÿ Off/3 flashes/5 flashes/7 flashes’ in the
instrument panel LCD cluster.
Battery saver function
The purpose of this feature is to prevent
the battery from being discharged.
The system automatically turns off the
position lamp when the driver turns the
vehicle off and opens the driver-side
door.
With this feature, the position lamps will
turn off automatically if the driver parks
on the side of road at night.
If necessary, to keep the lamps on when
the vehicle is turned off, perform the
following:
However, the position lamps stay ON
even when the driver-side door is opened
if the headlight switch is turned to the
position lamp or AUTO (if equipped)
position after the engine is turned off.
If necessary, to keep the lamps on
turn the position lamps OFF and ON
again using the headlight switch on
the steering column after the engine is
turned off.

Emergency Situations8-4
IF THE ENGINE WILL NOT START

[ Be sure to shift the gear to N (Neutral)
or P (Park). The engine starts only
when the gear is in N (Neutral) or P
(Park).

[ This vehicle does not have a regular
12V battery that needs periodic
replacement. It is lithium ion polymer
type integrated into the HEV high
voltage battery. The vehicle has a
12V battery protection system that
cuts 12V battery from vehicle draw
to prevent full discharge. If vehicle
will not start, first try pressing the
12V Battery Reset switch (left side of
the steering wheel near the fuel door
open switch) to reconnect the 12V
battery, but you must start vehicle
within 15 seconds of pressing the 12V
Battery Reset switch. After starting
the vehicle (
indicator ON ),
operate the vehicle safely outdoors in
ready mode stopped and/or drive it
for 30 minutes total to charge the 12V
battery fully.

[ Check the fuel level and add fuel if
necessary.
If the vehicle still does not start, call
an authorized HYUNDAI dealer for
assistance.
NOTICE
Push or pull starting the vehicle may
cause the catalytic converter to
overload which can lead to damage to
the emission control system.

9
9. Maintenance
Engine Compartment ........................................................................\
............... 9-3
Maintenance Services ........................................................................\
.............. 9-4
Owner’s Responsibility ........................................................................\
....................... 9-4
Owner Maintenance Precautions ........................................................................\
....... 9-4
Owner Maintenance ........................................................................\
................. 9-5Owner Maintenance Schedule ........................................................................\
............9-5
Scheduled Maintenance Services ....................................................................9-7Normal Maintenance Schedule ........................................................................\
.......... 9-9
Maintenance Under Severe Usage Conditions ....................................................... 9-12
Explanation of Scheduled Maintenance Items .............................................. 9-14
Engine Oil ........................................................................\
.................................9-16
Checking the Engine Oil Level ........................................................................\
........... 9-16
Checking the Engine Oil and Filter ........................................................................\
....9-17
Engine Coolant/Inverter Coolant ....................................................................9-18Checking the Coolant Level......................................................................\
................. 9-18
Changing Coolant ........................................................................\
............................. 9-20
Hybrid Starter & Generator (HSG) Belt ........................................................... 9-21
Checking the Hybrid Starter & Generator (HSG) Belt .............................................. 9-21
Brake Fluid ........................................................................\
................................ 9-21Checking the Brake Fluid Level ........................................................................\
......... 9-21
Washer Fluid ........................................................................\
............................ 9-22Checking the Washer Fluid Level ........................................................................\
...... 9-22
Air Cleaner ........................................................................\
............................... 9-23Filter Replacement ........................................................................\
............................. 9-23
Cabin Air Filter ........................................................................\
......................... 9-24Filter Inspection........................................................................\
..................................9-24
Filter Replacement ........................................................................\
.............................9-24
Wiper Blades ........................................................................\
........................... 9-25Blade Inspection ........................................................................\
................................ 9-25
Blade Replacement ........................................................................\
............................ 9-25
Battery (Plug-in hybrid vehicle) ..................................................................... 9-29For Best Battery Service ........................................................................\
................... 9-30
Battery Capacity Label ........................................................................\
....................... 9-31
Battery Recharging ........................................................................\
............................ 9-31
Reset Items ........................................................................\
.........................................9-33

Maintenance9-32
• The negative battery cable must
be removed first and installed last
when the battery is disconnected.
Disconnect the battery charger in the
following order:
1. Turn off the battery charger main
switch.
2. Unhook the negative clamp from the negative battery terminal.
3. Unhook the positive clamp from the positive battery terminal.
• Use batteries for replacement from
an authorized HYUNDAI dealer.
Hybrid vehicle
The 12V auxiliary battery of the vehicle
is integrated within the high-voltage
battery. The high-voltage battery is
located under the 2nd row seat cushion.
For battery related servicing, have you
the vehicle serviced by an authorized
HYUNDAI dealer.
12V auxiliary battery connector
ONX4H092026LONX4H092026L
Disconnect the 12V auxiliary battery
connector located inside the engine
room compartment to shut down the
power of the 12V auxiliary battery.
Connect the 12V auxiliary battery
connector again after the battery related
maintenance is finished.
CAUTION
• The efficiency of the battery
decreases during low temperature.
If the vehicle is not used for the
extended period of time, park the
vehicle indoors if possible.
• Always keep the battery charged to
the full capacity. The battery case
may damage due to freezing if the
battery capacity is low.
• Do not install unauthorized electrical
devices (for example, lamps,
dashcam, etc.) to a vehicle. It may
discharge the battery.

09
9-33
NOTICE
AGM battery (if equipped)
• Absorbent Glass Mat (AGM) batteries
are maintenance-free and have
the AGM battery serviced by an
authorized HYUNDAI dealer. For
charging your AGM battery, use only
fully automatic battery chargers that
are specially developed for AGM
batteries.
• When replacing the AGM battery,
use parts for replacement from an
authorized HYUNDAI dealer.
• Do not open or remove the cap on
top of the battery. This may cause
leaks of internal electrolyte that
could result in severe injury.
By jump starting
After a jump start from a good battery,
drive the vehicle for 20-30 minutes
before it is shutoff. The vehicle may
not restart if you shut it off before the
battery had a chance to adequately
recharge. See “Jump Starting” in chapter
9 for more information on jump starting
procedures.
Information
An inappropriately disposed
battery can be harmful to the
environment and human health.
Dispose of the battery according
to your local law(s) or regulation.
Reset Items
The following items may need to be reset
after the battery has been discharged or
the battery terminal (For plug-in hybrid
vehicle) or battery connector (For hybrid
vehicle) has been disconnected.
• Auto up/down window (see chapter 5)
• Sunroof (see chapter 5)
• Trip computer (see chapter 5)
• Climate control system (see chapter 5)
• Driver position memory system (see
chapter 5)
• Clock (see chapter 5)
• Infotainment system (see infotainment system manual)