jump start HYUNDAI NEXO 2023 Owners Manual

5-13
Driving your vehicle
5
Shift-lock system
For your safety, your vehicle has a
shift-lock system which prevents
shifting the gear from P (Park) or N
(Neutral) into R (Reverse) or D
(Drive) unless the brake pedal isdepressed.
To shift from P (Park) or N (Neutral)
into R (Reverse) or D (Drive) :
1. Depress and hold the brake pedal.
2. Start the vehicle or place thePOWER button in the ON position.
3. Press the R (Reverse) or D (Drive) button.
When the battery (12 V) is dis-
charged
You cannot shift the gear when the
battery is discharged.
Jump start your vehicle (refer to
“Jump Starting” in chapter 6) or con-
tact an authorized HYUNDAI dealer.
Parking
Always come to a complete stop and
continue to depress the brake pedal.
Shift to the P (Park) position, apply
the parking brake, and place the
POWER button in the OFF position.
Take the Key with you when exiting
the vehicle.
LCD Display Messages
Shifting conditions not met
The message appears on the LCD
display when driving speed is too
fast to shift the gear.
Decrease the vehicle speed or slow
down before shifting the gear.
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5-30
ABS cannot prevent a loss of stabili-
ty. Always steer moderately when
braking hard. Severe or sharp steer-
ing wheel movement can still cause
your vehicle to veer into oncoming
traffic or off the road.
On loose or uneven road surfaces,
operation of the anti-lock brake sys-
tem may result in a longer stopping
distance than for vehicles equipped
with a conventional brake system.
The ABS warning light ( ) will stay
on for several seconds after the
POWER button is in the ON position.
During that time, the ABS will gothrough self-diagnosis and the light
will go off if everything is normal. If
the light stays on, you may have a
problem with your ABS. Contact an
authorized HYUNDAI dealer as soon
as possible.
When you drive on a road having
poor traction, such as an icy road,
and apply your brakes continu-
ously, the ABS will be active con-
tinuously and the ABS warning
light ( ) may illuminate. Pull
your car over to a safe place and
turn the vehicle off.
Restart the vehicle. If the ABS
warning light is off, then your ABSsystem is normal.
Otherwise, you may have a prob-
lem with your ABS system.
Contact an authorized HYUNDAI
dealer as soon as possible.
Information
When you jump start your vehicle
because of a drained battery, the ABS
warning light ( ) may turn on at the
same time. This happens because of
the low battery voltage. It does not
mean your ABS is malfunctioning.
Have the battery recharged before
driving the vehicle.
i
NOTICE
Driving your vehicle
If the ABS warning light ( ) is
on and stays on, you may have
a problem with the ABS. Your
power brakes will work normal-
ly. To reduce the risk of serious
injury or death, contact your
HYUNDAI dealer as soon as
possible.
WARNING

What to do in an emergency
6
Hazard Warning Flasher .......................................6-2
In Case of an Emergency While Driving.............6-2If an accident occurs........................................................6-2
If a fire occurs ...................................................................6-3
Emergency venting of hydrogen gas...........................6-3
If a submersion in water occurs....................................6-3
If the vehicle stalls at a crossroad or crossing .........6-3
If you have a flat tire while driving..............................6-4
If the vehicle stalls while driving...................................6-4
If the Vehicle Will Not Start .................................6-4
If the 12 Volt Battery is Discharged ...................6-5 Before Jump Starting .......................................................6-5
Jump Starting......................................................................6-6
If the Vehicle Overheats .......................................6-9
Tire Pressure Monitoring System (TPMS).......6-11 Check Tire Pressure .......................................................6-11
Tire Pressure Monitoring System ...............................6-12
Low Tire Pressure Telltale ............................................6-13
Low Tire Pressure LCD Display with Position
Indicator.............................................................................6-13 TPMS Malfunction Indicator ........................................6-14
Changing a Tire with TPMS..........................................6-15 If You Have a Flat Tire
(With Tire Mobility Kit) .......................................6-17
Towing ...................................................................6-24
Towing Service .................................................................6-24
Removable Towing Hook ...............................................6-25
Emergency Towing..........................................................6-26

6-5
What to do in an emergency
6
Before Jump Starting
This vehicle does not have a regular
12V battery that needs periodic
replacement. It is lithium ion polymer
type integrated into the high voltage
battery. The vehicle has a 12V bat-
tery protection system that cuts 12V
battery from vehicle draw to prevent
full discharge.
Using the 12V Battery ResetSwitch
1. Press the 12V Battery Reset switch to reconnect the 12V bat-
tery.
2. Start the vehicle within 15 sec- onds of pressing the 12V Battery
Reset switch.
3. After starting vehicle ( indica- tor on), move the vehicle outside
and keep the vehicle ready ( )
mode more than 30 minutes safe-
ly to charge the 12V battery. If you do not start the vehicle imme-
diately after pressing the 12V Battery
Reset switch, the power of 12V bat-
tery is automatically disconnected
after few seconds to save the 12V
battery from additional discharge. If
the 12V battery is disconnected prior
to starting the vehicle, press the 12V
Battery Reset switch again and then
immediately start the vehicle as
explained.
Repeated use of the 12V Battery
Reset switch without a sufficient
vehicle ON cycle (30 Min+) may
cause over discharge of the 12V bat-
tery, which will prevent the vehicle
from starting. If the 12V battery is
over discharged to a point that the
reset does not work, try to jump-start
the vehicle.
Information
After starting the vehicle ( indica-
tor on), the 12V battery is being
charged whether the accelerator pedal
is depressed or not.
i
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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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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
1122VV BB AA TTTTEERR YY
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.

7-28
Maintenance
Battery Recharging
By RESET button
To charge the discharged 12V bat-
tery, attempt charging by pressing
12V BATT RESET button. For more
details, refer to “If the 12 volt battery
is discharged” in chapter 6.
By jump starting
After a jump start from a good bat-
tery, drive the vehicle for 20-30 min-
utes 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 6 For more
details on jump starting procedures.
Reset Features
Some items need to be reset after
the battery has been discharged or
the battery has been disconnected.
See chapter 3 or 4 for:
Power Windows
Trip Computer
Climate Control System
Clock
Audio System
Sunroof
Driver Position Memory System
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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