2023 HYUNDAI NEXO jump cable

5-122
Driving your vehicle
The severe weather conditions of
winter quickly wear out tires and
cause other problems. To minimize
winter driving problems, you should
take the following suggestions:
Snow or Icy Conditions
You need to keep sufficient distance
between your vehicle and the vehicle
in front of you.
Apply the brakes gently. Speeding,
rapid acceleration, sudden brake
applications, and sharp turns are
potentially very hazardous practices.
During deceleration, use regenera-
tive braking to the fullest extent.
Sudden brake applications on snowy
or icy roads may cause the vehicle toskid.
To drive your vehicle in deep snow, it
may be necessary to use snow tires.
Always carry emergency equipment.
Some of the items you may want to
carry include, tow straps or chains, a
flashlight, emergency flares, sand, a
shovel, jumper cables, a window
scraper, gloves, ground cloth, cover-
alls, a blanket, etc.
Snow tires
If you mount snow tires on your vehi-
cle, make sure to use radial tires of
the same size and load range as the
original tires. Mount snow tires on all
four wheels to balance your vehicle’s
handling in all weather conditions.
The traction provided by snow tires
on dry roads may not be as high as
your vehicle's original equipment
tires. Check with the tire dealer for
maximum speed recommendations.Information
Do not install studded tires without
first checking local, country and
municipal regulations for possible
restrictions against their use.
Air cleaner filter (FCEV)
The snow may block the air cleaner
filter after driving the vehicle in heavy
snow when the ambient temperature
is below 10°C (50°F).
If a warning message "Air filter
blocked. Check filter or see user
manual" appears on LCD display
after turning off the vehicle, remove
the snow from the inside of the air
cleaner filter and turn on and off the
vehicle. If the warning message is
displayed again, the exhaust pipe
may be blocked. Then, move your
vehicle indoors and leave it inside
more than one day to defrost the
exhaust pipe.
If the warning message is displayed
again, have the vehicle checked by
an authorized HYUNDAI dealer.
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Snow tires should be equivalent
in size and type to the vehicle's
standard tires. Otherwise, the
safety and handling of your
vehicle may be adversely affect-ed.
WARNING

6-6
What to do in an emergency
The following items may need to be
reset after the battery has been dis-
charged or the battery has been dis-
connected. See chapter 3 or 4 for:
Power Windows
Trip Computer
Climate Control System
Clock
Audio System
Sunroof
Driver Position Memory System
External power source using 12V
battery
The use of external power acces-
sories may reduce performance
and function of the vehicle.
Especially, the use of dash cam-
eras may shut off the power of the
vehicle prior to the dash camera's
automatic shut-down.
If the power of the vehicle is shut
off, start the vehicle as explained.
(refer to "Using the 12V Battery
Switch")Jump Starting
In the event vehicle still does not
have a functional 12V battery (check
if interior lights will not turn on) then
you can try a jump start using a 12V
booster pack or jumper cables from
another vehicle's 12V battery
according to the following instruc-
tions.1. Position the vehicles close enough
that the jumper cables will reach,
but do not allow the vehicles totouch.
2. Avoid fans or any moving parts in the fuel cell power module com-
partment at all times, even when
the vehicles are turned off.
3. Turn off all electrical devices such as radios, lights, air conditioning,
etc. Put the vehicles in P (Park)
and set the parking brake. Turn
both vehicles OFF.
NOTICE
Jump starting can be danger-
ous if done incorrectly. Follow
the jump starting procedure in
this section to avoid serious
injury or damage to your vehi-
cle. If in doubt about how to
properly jump start your vehi-
cle, we strongly recommend
that you have a service techni-
cian or towing service do it for
you.
CAUTION

6-7
What to do in an emergency
64. Connect the jumper cables in theexact sequence shown in the illus-
tration. First connect one jumper
cable to the red, positive (+)
jumper terminal of your vehicle(1).
5. Connect the other end of the jumper cable to the red, positive
(+) battery/jumper terminal of the
assisting vehicle (2). 6. Connect the second jumper cable
to the black, negative (-) battery/
chassis ground of the assisting
vehicle (3).
7. Connect the other end of the sec- ond jumper cable to the black,
negative (-) chassis ground of
your vehicle (4).
Do not allow the jumper cables to
contact anything except the cor-
rect battery or jumper terminals or
the correct ground. Do not lean
over the battery when making
connections. 8. Press the 12V Battery Reset
switch.
9. Start the engine of the assisting vehicle and let it run for a few min-
utes.
10. Start your vehicle as soon as possible. After starting 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.
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OFEQ018012

6-8
What to do in an emergency
If your vehicle will not start after a
few attempts, it probably requires
servicing. In this event please seek
qualified assistance. If the cause of
your battery discharging is not
apparent, have your vehicle checked
by an authorized HYUNDAI dealer.
Disconnect the jumper cables in the
exact reverse order you connectedthem:
1. Disconnect the jumper cable fromthe black, negative (-) chassis
ground of your vehicle (4).
2. Disconnect the other end of the jumper cable from the black, neg-
ative (-) battery/chassis ground of
the assisting vehicle (3).
3. Disconnect the second jumper cable from the red, positive (+)
battery/jumper terminal of the
assisting vehicle (2).
4. Disconnect the other end of the jumper cable from the red, positive
(+) jumper terminal of your vehicle(1). Information
The voltage range of the charger
should be 13.3~14V and its current
range should be less than 60A. (13.8V
is recommended). Information
An inappropriately disposedbattery can be harmful to the
environment and human
health. Dispose of the battery
according to your local law(s)
or regulations.
To prevent damage to your vehi-
cle:
• Only use a 12-volt power supply (battery or jumper system) to
jump start your vehicle.
Do not attempt to jump start your vehicle by push-starting.
NOTICE
ii
The use of an improper charg-
er with a voltage and current
range higher than specified
may cause overheating and
damage to the 12V battery.
The use of an incorrect charg-
er will lead to a power shut-off
to save the 12V battery. Stop
using the incorrect charger
once the power of the vehicle
is shut off.
CAUTION
Pb
Do not jump start another vehi-
cle with your hybrid vehicle.
Jump starting another vehicle
will damage the hybrid vehicle’s
12 volt battery (lithium polymertype).
CAUTION

7-27
7
Maintenance
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The vehicle is not equipped with a
common 12V battery which requires
periodic replacement. The battery is
a lithium polymer type integrated into
the high voltage battery. Full dis-
charge of the battery is prevented
through 12V battery protection sys-tem which can isolate the 12V bat-
tery.
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.
WARNING
Hydrogen is always present in battery cells,
is highly combustible,
and may explode if ignit-ed.
Keep batteries out of
reach of children. Batteries contain sulfu-
ric 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 imme-
diate medical attention. If acid
gets on your skin, thoroughly
wash the area. If you feel pain or
a burning sensation, get med-
ical 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 compo-
nents with the vehicle ON
( indicator ON) or when
the POWER button is in theON position.

H9
Service plug
OFEQ018011The FCEV system contains
many electronic components.
High voltage components like
cables and other parts may emit
electromagnetic waves. Even if
the electromagnetic cover
blocks electromagnetic emis-
sions, electromagnetic waves
may have an effect on electron-
ic appliances. If you park the
vehicle for a long time, the high
voltage battery or 12V battery
will discharge. You need to drive
the vehicle several times per
month. We recommend driving
at least 10 minutes or 3 km (2
miles) when you drive the vehi-
cle.
If the high voltage battery is dis-
charged and if it is impossible
to jump start the vehicle contact
your HYUNDAI dealer.
CAUTION
When you start the FCEV sys-
tem in the "P" or "N" gear
position, the "Ready ( )"indicator is illuminated in the
cluster. The driver can drive
the vehicle.
When you leave the vehicle,
you should turn off the sys-tem or shift into the "P" posi-
tion. If you depress the accel-
erator pedal by mistake and
the vehicle is not in the "P"
position, the vehicle will move
abruptly. This may result in
serious injury or death.
WARNING
Never touch the service plug under the rear seat.
The service plug is attached to
the high voltage battery system.
Touching the service plug will
result in death or serious injury.
Service personnel should fol-
low procedures in service man-ual.
WARNING

H33
CategoryQuestionsAnswers
Vehicle
Management (12 items)
11. Can I wash my FCEV with pressurized water? What if water flows into the fuel
cell power module compartment?
Every component housed in the fuel cell power module compart-
ment is designed to be waterproof like those found in standard vehi-
cles. Therefore, a short circuit of the FCEV cannot happen while
washing the car. However, your FCEV works by utilizing high-voltage
electric power, so it is recommended that you avoid high-pressure car
washes. If the insulation resistance of the FCEV deteriorates due to
car wash, a High voltage warning light may turn on the cluster.

12. When washing the fuel cell power mod-ule compartment, is there any potential
risk of electric shock resulting from a
high-voltage short circuit?The FCEV is designed to be a waterproof structure, but please
avoid washing the inside of the compartment if possible. Because
there are many high voltage parts in the power module compart-ment.
13. Can I wash the bottom of the vehicle? Ifyes, what should I be aware of?The FCEV is designed to be a waterproof structure, but please
avoid washing the botttom of the vehicle if possible. Because there
are high voltage cables in the under cover.
14. Can driving with a tire chain affect thedrive motor?Driving with a tire chain causes no direct damage to the drive motor.
15. How should I jump start the vehicle?
Try charging it by pressing the “12V BATT RESET” button first. Refer
to the "If the 12 volt battery is discharged" in this guide book. It it
doesn't work, refer to the "Jump starting" in the Owner's manualchapter 6.