2023 HYUNDAI TUCSON HYBRID Battery

09
9-21
Checking the Hybrid Starter &
Generator (HSG) Belt
Have the Hybrid Starter & Generator
(HSG) belt inspected or replaced
according to the Maintenance Schedule
in this chapter by an authorized
HYUNDAI dealer.
CAUTION
When the HSG belt is worn out or
damaged, replace the belt.
Otherwise, it may cause engine
overheating or battery discharge.
WARNING
• Turn the vehicle off while you inspect
the engine or Hybrid Starter &
Generator (HSG) belt. Otherwise it
may result in serious injury.
• Keep hands, clothing etc. away from
the Hybrid Starter & Generator (HSG)
belt.
Checking the Brake Fluid Level
ONX4H090009ONX4H090009
Check the fluid level in the reservoir
periodically. The fluid level should be
between MAX and MIN marks on the side
of the reservoir.
Before removing the reservoir cap and
adding brake fluid, clean the area around
the reservoir cap thoroughly to prevent
brake fluid contamination.
If the level is low, add the specified brake
fluid to the MAX level. The level will fall
with accumulated mileage. This is a
normal condition associated with the
wear of the brake linings. If the fluid level
is excessively low, have the brake system
checked by an authorized HYUNDAI
dealer.
WARNING
If the brake system requires frequent
additions of fluid this could indicate
a leak in the brake system. Have the
vehicle inspected by an authorized
HYUNDAI dealer.
HYBRID STARTER &
GENERATOR (HSG) BELT BRAKE FLUID

09
9-29
BATTERY (PLUG-IN HYBRID VEHICLE)
WARNING
To prevent SERIOUS INJURY or DEATH
to you or bystanders, always follow
these precautions when working near
or handling the battery:
Always read and follow
instructions carefully when
handling a battery.
Wear eye protection designed
to protect the eyes from acid
splashes.
Keep all flames, sparks, or
smoking materials away from
the battery.
Hydrogen is always present
in battery cells, is highly
combustible, and may explode
if ignited.
Keep batteries out of reach of
children.
Batteries contain sulfuric acid
which is highly corrosive. Do
not allow acid to contact your
eyes, skin or clothing.
If acid gets into your eyes, flush your
eyes with clean water for at least 15
minutes and get immediate medical
attention. If acid gets on your skin,
thoroughly wash the area. If you feel
pain or a burning sensation, get medical
attention immediately.
• When lifting a plastic-cased battery,
excessive pressure on the case may
cause battery acid to leak. Lift with a
battery carrier or with your hands on
opposite corners.
• Do not attempt to jump start your
vehicle if your battery is frozen.
• NEVER attempt to recharge the
battery when the vehicle’s battery
cables are connected to the battery.
• The electrical ignition system works
with high voltage. NEVER touch
these components with the engine
running or when the Engine Start/
Stop button is in the ON position.
WARNING
CALIFORNIA PROPOSITION 65
WARNING
Battery posts, terminals, and related
accessories contain lead and lead
compounds, chemicals known to the
State of California to cause cancer, birth
defects and reproductive harm.
Batteries also contain other chemicals
known to the State of California
to cause cancer. Wash hands after
handling.
NOTICE
Always follow these instructions when
handling your vehicle’s battery to
prevent damage to your battery:
• When you do not use the vehicle for a
long time in a low temperature area,
disconnect the battery and keep it
indoors.
• Always charge the battery fully to
prevent battery case damage in low
temperature areas.
• Prevent liquid from wetting the
battery terminals. The performance
of the battery may be degraded, and
may cause injury. Be cautious when
loading liquid in the liftgate.
• Do not tilt the battery.
• If you connect unauthorized
electronic devices to the battery, the
battery may be discharged. Never
use unauthorized devices.

Maintenance9-30
For Best Battery Service
„„Luggage compartmentLuggage compartment
ONX4PH091031NONX4PH091031N
• Keep the battery securely mounted.
• Keep the battery top clean and dry.
• Keep the terminals and connections clean, tight, and coated with
petroleum jelly or terminal grease.
• Rinse any spilled electrolyte from the battery immediately with a solution of
water and baking soda.
• If the vehicle is not going to be used for an extended time, disconnect the
battery cables.
Information - For batteries
marked with UPPER and
LOWER
OHI078084LOHI078084L
If your vehicle is equipped with a battery
marked with LOWER (MIN) and UPPER
(MAX) on the side, you should check the
electrolyte level.
The electrolyte level should be between
LOWER (MIN) and UPPER (MAX).
When the electrolyte level is low, add
distilled (or de-mineralized) water. (Never
add sulfuric acids or other electrolyte).
Be careful not to spill distilled (or
demineralized) water over the battery
surface or other adjacent components.
Also, do not overfill the battery cells.
If not, it may corrode the battery or other
components. Finally, securely close the
cell cap. However, contact an authorized
HYUNDAI dealer for better battery
service.

09
9-31
Battery Capacity Label
„„Type AType A
OTM090063LOTM090063L
„„Type BType B
OTM090064LOTM090064L
1. MF68L-DIN : The HYUNDAI model name of battery
2. 12V : The nominal voltage
3. 68Ah (20HR) : The nominal capacity (in Ampere hours)
4. RC 110min : The nominal capacity (in Ampere hours)
5. 600A : The cold-test current in amperes by SAE/EN
Battery Recharging
By battery charger
Your vehicle has a maintenance-free,
calcium-based battery.
• If the battery becomes discharged over a short time (because, for
example, the headlights or interior
lights were left on while the vehicle
was not in use), recharge it by slow
charging (trickle) for 10 hours.
• If the battery gradually discharges because of high electrical load while
the vehicle is being used, recharge it
at 20-30A for two hours.
WARNING
Always follow these instructions when
recharging your vehicle’s battery to
avoid the risk of SERIOUS INJURY or
DEATH from explosions or acid burns:
• Before performing maintenance or
recharging the battery, turn off all
accessories and stop the engine.
• Keep all flames, sparks, or smoking
materials away from the battery.
• Always work outdoors or in an area
with plenty of ventilation.
• Wear eye protection when checking
the battery during charging.
• The battery must be removed from
the vehicle and placed in a well
ventilated area.
• Watch the battery during charging,
and stop or reduce the charging
rate if the battery cells begin boiling
violently.

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)

09
9-43
Maximum Inflation Pressure
The maximum air pressure to which
a cold tire may be inflated. The
maximum air pressure is molded
onto the sidewall.
Maximum Load Rating
The load rating for a tire at the
maximum permissible inflation
pressure for that tire.
Maximum Loaded Vehicle Weight
The sum of curb weight; accessory
weight; vehicle capacity weight; and
production options weight.
Normal Occupant Weight
The number of occupants a vehicle
is designed to seat multiplied by 150
pounds (68 kg).
Occupant Distribution
Designated seating positions.
Outward Facing Sidewall
An asymmetrical tire has a particular
side that faces outward when
mounted on a vehicle. The outward
facing sidewall bears white lettering
or bears manufacturer, brand, and/or
model name molding that is higher
or deeper than the same moldings
on the inner facing sidewall.
Passenger (P-Metric) tire
A tire used on passenger cars
and some light duty trucks and
multipurpose vehicles.
Ply
A layer of rubber-coated parallel
cords.Pneumatic tire
A mechanical device made of rubber,
chemicals, fabric and steel or other
materials, that, when mounted on
an automotive wheel provides the
traction and contains the gas or fluid
that sustains the load.
Pneumatic options weight
The combined weight of installed
regular production options weighing
over 5 lb. (2.3 kg) in excess of the
standard items which they replace,
not previously considered in
curb weight or accessory weight,
including heavy duty breaks, ride
levelers, roof rack, heavy duty
battery, and special trim.
Recommended Inflation Pressure
Vehicle manufacturer’s
recommended tire inflation pressure
as shown on the tire placard.
Radial Ply Tire
A pneumatic tire in which the ply
cords that extend to the beads are
laid at 90 degrees to the centerline
of the tread.
Rim
A metal support for a tire and upon
which the tire beads are seated.
Sidewall
The portion of a tire between the
tread and the bead.
Speed Rating
An alphanumeric code assigned to a
tire indicating the maximum speed
at which a tire can operate.

09
9-47

vBlade type

v Cartridge type

v Multi type Normal Blown
Normal Blown
Normal Blown
OTM078035OTM078035
A vehicle’s electrical system is protected
from electrical overload damage by
fuses.
This vehicle has 2 (or 3) fuse panels, one
located in the driver’s side panel bolster,
the other in the engine compartment.
If any of your vehicle’s lights,
accessories, or controls do not work,
check the appropriate circuit fuse. If a
fuse has blown, the element inside the
fuse will be melted or broken.
If the electrical system does not work,
first check the driver’s side fuse panel.
Before replacing a blown fuse, turn the
engine and all switches off, and then
disconnect the (-) battery terminal
(For plug-in hybrid vehicle) or battery
connector (For hybrid vehicle). Always
replace a blown fuse with one of the
same rating.
If the replacement fuse blows, this
indicates an electrical problem. Avoid
using the system involved. Immediately
consult an authorized HYUNDAI dealer.
Information
Three kinds of fuses are used: blade type
for lower amperage rating, cartridge
type, and multi fuse for higher amperage
ratings.
FUSES