2023 HYUNDAI NEXO ECO mode

7-42
Maintenance
All Season Tires
HYUNDAI specifies all season tires
on some models to provide good
performance for use all year round,
including snowy and icy road condi-
tions. All season tires are identified
by ALL SEASON and/or M+S (Mud
and Snow) on the tire sidewall. Snow
tires have better snow traction than
all season tires and may be more
appropriate in some areas.
Summer Tires
HYUNDAI specifies summer tires on
some models to provide superior
performance on dry roads. Summer
tire performance is substantially
reduced in snow and ice. Summer
tires do not have the tire traction rat-
ing M+S (Mud and Snow) on the tire
side wall. If you plan to operate your
vehicle in snowy or icy conditions,
HYUNDAI recommends the use of
snow tires or all season tires on all
four wheels.
Snow Tires
If you equip your car with snow tires,
they should be the same size and
have the same load capacity as the
original tires. Snow tires should be
installed on all four wheels; other-
wise, poor handling may result. Snow
tires should carry 28 kPa (4 psi)more air pressure than the pressure
recommended for the standard tires
on the tire label on the driver’s side of
the center pillar, or up to the maxi-
mum pressure shown on the tire
sidewall, whichever is less. Do not
drive faster than 120 km/h (75 mph)
when your vehicle is equipped with
snow tires.
Radial-Ply Tires
Radial-ply tires provide improved
tread life, road hazard resistance and
smoother high speed ride. The radi-
al-ply tires used on this vehicle are of
belted construction, and are selected
to complement the ride and handling
characteristics of your vehicle.
Radial-ply tires have the same load
carrying capacity, as bias-ply or bias
belted tires of the same size, and usethe same recommended inflation
pressure. Mixing of radial-ply tireswith bias-ply or bias belted tires is
not recommended. Any combina-
tions of radial-ply and bias-ply or biasbelted tires when used on the same
vehicle will seriously deteriorate
vehicle handling. The best rule to fol-
low is: Identical pairs of radial-ply
tires should always be used as a set
for the front tires and a set for the
rear tires.

H6
Disconnecting negative (-) battery cable
1. Fold up the luggage board of the tailgate.
2. Disconnect the negative (-) con- nector.
Hydrogen gas detection
sensors
They detect a hydrogen leak and
informs a warning of hydrogen leak
to a driver. As informing a warning,the sensors automatically shut off
hydrogen. Sensors are installed
around the hydrogen storage tanks
and FCEV system module.
These sensors prevent a hydrogen
leak in an emergency. Even if the
hydrogen leak occurs, the Fuel cell
electric operating does not active.
The system operating is changed to
EV (Electric vehicle) mode and you
may drive the vehicle about 3 km (2
miles). However, we recommend that
you stop the vehicle to the safety
place and contact an authorized
HYUNDAI dealer.
OFEQ018009
TT HH EE CC OO MM PPOO NNEENN TTSS OO FF FF CC EE VV (( CC OO NNTT..))
Never touch orange or high
voltage labeled components
including wires, cables, andconnections.
If the insulators or covers are
damaged or removed, severe
injury or death from electrocu-
tion may occur.
WARNING
In the fuel cell system, the bat-
tery uses high voltage to oper-ate the motor and other compo-nents.
This high voltage battery sys-
tem can be very dangerous.
Never touch the system. If you
touch the battery system, seri-
ous injury or death may occur.
WARNING

H21
FCEV mode
Entering FCEV Mode
If you select the "FCEV" menu in the AVN home screen
or the "FCEV" in the menu, you can enter the FCEV
mode.
For details on FCEV Mode, refer to the navigation manu-
al that is provided separately.
FCEV Mode Menu Screen
1. Reachable Range: It shows the reachable range on themap.
2. Fuel cell monitoring: It shows the battery information and the power transmission flow between the compo-
nents.
3. ECO Driving: It shows the fuel efficiency information and environmental contribution.
4. Management : It shows the status of hydrogen tank (warning alert) and 'FCEV Route' setting.
OFEQ018017NOFEQ018019N
OFEQ018018N

H25
When the high voltage battery is weak
When the high voltage battery is
weak due to driving on a hill for a
long time or accelerating and decel-
erating the vehicle repeatedly, the
acceleration performance may be
lower than usual. In this case, be
cautious not to overtake other vehi-
cles.
If the 12 volt battery is dis-
charged
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.
If the 12V battery is discharged, you
should try charging it by pressing the
"12V BATT RESET" button.
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.
OFEQ018012

I-3
Blind-Spot View Monitor System ..................................5-77
Blind-Spot View Monitor system warning ................5-78
Operating Conditions .................................................5-77
Brake Fluid .....................................................................7-19 Checking the Brake Fluid Level ................................7-19
Braking System ...............................................................5-18 Anti-lock Brake System (ABS)..................................5-29
Auto Hold ...................................................................5-25
Disc Brake Wear Indicator .........................................5-19
Electronic Parking Brake (EPB) ................................5-19
Electronic Stability Control (ESC).............................5-31
Good Braking Practices..............................................5-36
Hill-Start Assist Control (HAC) .................................5-36
Power Brakes..............................................................5-18
Vehicle Stability Management (VSM) .......................5-34
Bulb Wattage .....................................................................8-3
Cargo Security Screen ..................................................3-174
Center Console Storage ................................................3-163
Child Restraint System (CRS) ........................................2-36 Children Always in the Rear ......................................2-36
Installing a Child Restraint System (CRS) ................2-39
Selecting a Child Restraint System (CRS).................2-37
Climate Control Additional Features ............................3-162
Automatic Ventilation...............................................3-162
Sunroof Inside Air Recirculation .............................3-162 Climate Control Air Filter...............................................7-22
Filter Inspection..........................................................7-22
Clock .............................................................................3-171
Coat Hook .....................................................................3-172
Cup Holder....................................................................3-164
Curtain air bags ...............................................................2-51
Customer Q&A Guide .....................................................H30
Declaration of conformity .............................................5-115
Device Cooling Coolant .................................................7-13
Changing Coolant.......................................................7-15
Checking the Coolant Level .......................................7-13
Dimensions .......................................................................8-2
Door Locks......................................................................3-11 Automatic Door Lock and Unlock Features ..............3-17
Child-Protector Rear Door Locks ..............................3-18
Door Locking from Outside the Vehicle ....................3-14
Door Unlocking from Outside the Vehicle.................3-11
Operating Door Locks from Inside the Vehicle .........3-14
Drive Mode Integrated Control System .........................5-37
Drive Mode Change Alert ..........................................5-38
ECO Mode Climate Control ......................................5-38
Driver Assist System.....................................................3-105 Parking Distance Warning (Reverse/Forward) System ...................................................................3-105
Rear View Monitor ...................................................3-109
Surround View Monitoring ......................................3-110
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