service indicator HYUNDAI NEXO 2023 Owners Manual

3-10
Immobilizer System
The immobilizer system protects
your vehicle from theft. If an improp-
erly coded key (or other device) is
used, the power system is disabled.
When the POWER button is placed
in the ON position, the immobilizersystem 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 POWER button to the OFF
position, then place the POWER but-ton to the ON position again.
In some circumstances, the vehicle
may not recognize your smart key if
another smart key device is nearby
or a metal object such as a key chain
is causing interference with the
smart key.
If this occurs, your vehicle may not
start. Remove any metal objects or
additional keys near the smart key
before attempting to start the vehicleagain.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.
The transponder in your key is an
important part of the immobilizer
system. It is designed to give
years of trouble-free service, how-
ever you should avoid exposure to
moisture, static electricity and
rough handling. Immobilizer sys-
tem malfunction could occur. Information
This device complies with Industry
Canada RSS-210 standard.
Operation is subject to the following
three conditions:
1. This device may not cause harmful interference.
2. This device must accept any inter- ference received, including interfer-
ence that may cause undesired
operation.
3. Changes or modifications not expressly approved by the party
responsible for compliance could
void the user's authority to operate
the device.
i
NOTICE
Convenient features of your vehicle
In order to prevent theft of your
vehicle, do not leave spare keys
anywhere in your vehicle. Your
immobilizer password is a cus-
tomer unique password andshould be kept confidential.
WARNING

3-65
Convenient features of your vehicle
Warning and Indicator lights
Information
Make sure that all warning lights are
OFF after starting the vehicle. If any
light is still ON, this indicates a situa-
tion that needs attention.
Ready Indicator
This indicator illuminates :
When the vehicle is ready to be driven.
- ON : Normal driving is possible.
- OFF : Nor mal driving is not possible,
or a problem has occurred.
- Blinking : Emergency driving. When the ready indicator goes OFF
or blinks, there is a problem with the
system. In this case, have your vehi-
cle inspected by an authorized
HYUNDAI dealer.
Service Warning Light
This warning light illuminates :
When the POWER button is in the ON position.
- It illuminates for approximately 3seconds and then goes off.
When there is a problem with relat- ed parts of the fuel cell electric
vehicle control system, such as
sensors, etc.
When the warning light illuminates
while driving, or does not go OFF
after starting the vehicle, have your
vehicle inspected by an authorized
HYUNDAI dealer.
Power Down Warning Light
This warning light illuminates :
When the vehicle power should be limited due to a malfunction with
fuel cell stack.
If the warning light continuously
remains on when the vehicle is in
"READY" state, or comes on dur-
ing driving, this indicates that there
may be a malfunction with the fuel
cell stack. If this occurs, we recom-
mend that you have the vehicle
inspected by an authorized
HYUNDAI dealer.
If the warning light turns on again
when restarting the vehicle after
parking your vehicle on an incline.
NOTICE
i
3

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

6-15
What to do in an emergency
6
The TPMS Malfunction Indicator
may illuminate after blinking for
one minute if the vehicle is near
electric power supply cables or
radio transmitters such as police
stations, government and public
offices, broadcasting stations,
military installations, airports,
transmitting towers, etc.
Additionally, the TPMS Malfunction
Indicator may illuminate if snow
chains are used or electronic
devices such as computers, charg-
ers, remote starters, navigation,
etc. This may interfere with normal
operation of the TPMS.
Changing a Tire with TPMS
If you have a flat tire, the Low Tire Pressure and LCD position indicator
will come on. Have the flat tire
repaired by an authorized HYUNDAI
dealer as soon as possible.
Once the original tire equipped with
a tire pressure monitoring sensor isreinflated to the recommended pres-
sure and reinstalled on the vehicle,
the Low Tire Pressure LCD position
indicator and TPMS Malfunction
Indicator will go off within a few min-
utes of driving.If the indicators do not disappear
after a few minutes, please visit an
authorized HYUNDAI dealer. Each wheel is equipped with a tire pressure sensor mounted inside the
tire behind the valve stem. You must
use TPMS specific wheels. It is rec-
ommended that you always have
your tires serviced by an authorized
HYUNDAI dealer.
NOTICE
Never use a puncture-repairing
agent not approved by HYUNDAIdealer to repair and/or inflate a
low pressure tire. Tire sealant
not approved by HYUNDAI deal-
er may damage the tire pressure
sensor.
CAUTION

6-18
What to do in an emergency
Introduction
With the Tire Mobility Kit you stay
mobile even after experiencing a tire
puncture. The compressor and sealing com-
pound system effectively and com-
fortably seals most punctures in a
passenger car tire caused by nailsor similar objects and reinflates the
tire.
After you ensure that the tire is prop-
erly sealed you can drive cautiouslyon the tire (distance up to 200 km
(120 miles)) at a max. speed of (80km/h (50 mph)) in order to reach a
service station or tire dealer for thetire replacement.
It is possible that some tires, espe- cially with larger punctures or dam-
age to the sidewall, cannot be sealed
completely.
Air pressure loss in the tire may
adversely affect tire performance.
For this reason, you should avoid
abrupt steering or other driving
maneuvers, especially if the vehicle
is heavily loaded or if a trailer is in
use.The Tire Mobility Kit is not designed
or intended as a permanent tire
repair method and is to be used for
one tire only.
This instruction shows you step by
step how to temporarily seal the
puncture simply and reliably.
Read the section "Notes on the safe
use of the Tire Mobility Kit".
Notes on the safe use of the
Tire Mobility Kit
Park your car at the side of the road so that you can work with the
Tire Mobility Kit away from moving
traffic.
To be sure your vehicle will not move, even when you're on fairly
level ground, always set your park-
ing brake.
Only use the Tire Mobility Kit for sealing/inflation passenger car
tires. Only punctured areas locatedwithin the tread region of the tirecan be sealed using the tire mobil-ity kit.
Do not use on motorcycles, bicy- cles or any other type of tires. When the tire and wheel are dam-
aged, do not use Tire Mobility Kit
for your safety.
Use of the Tire Mobility Kit may not be effective for tire damage larger
than approximately 4 mm (0.16in.). Please contact the nearest
HYUNDAI dealership if the tire
cannot be made roadworthy with
the Tire Mobility Kit.
Do not use the Tire Mobility Kit if a tire is severely damaged by driving
run flat or with insufficient air pres-
sure.
Do not remove any foreign objects such as nails or screws that have
penetrated the tire.
Provided the car is outdoors, leave the vehicle ON ( indicator ON).
Otherwise operating the compres-
sor may eventually drain the car
battery.
Never leave the Tire Mobility Kit unattended while it is being used.
Do not leave the compressor run- ning for more than 10 minutes at a
time or it may overheat.

7-34
Maintenance
Wheel Replacement
When replacing the metal wheels for
any reason, make sure the new
wheels are equivalent to the original
factory units in diameter, rim widthand offset.
Tire Traction
Tire traction can be reduced if you
drive on worn tires, tires that are
improperly inflated or on slippery
road surfaces. Tires should be
replaced when tread wear indicators
appear. To reduce the possibility of
losing control, slow down whenever
there is rain, snow or ice on the road.
Tire Maintenance
In addition to proper inflation, correct wheel alignment helps to decrease
tire wear. If you find a tire is worn
unevenly, have your dealer check thewheel alignment.
When you have new tires installed,
make sure they are balanced. This
will increase vehicle ride comfort and
tire life. Additionally, a tire should
always be rebalanced if it is removedfrom the wheel.
Tire Sidewall Labeling
This information identifies and
describes the fundamental charac-
teristics of the tire and also provides
the tire identification number (TIN)
for safety standard certification. TheTIN can be used to identify the tire incase of a recall.
Tires degrade over time, even
when they are not being used.
Regardless of the remaining
tread, HYUNDAI recommendsthat tires be replaced after six
(6) years of normal service.
When replacing tires (or
wheels), it is recommended to
replace the two front or two
rear tires (or wheels) as a pair.Replacing just one tire can
seriously affect your vehicle'shandling.
Heat caused by hot climates or frequent high loading con-ditions can accelerate the
aging process. Failure to fol-
low this warning may cause
sudden tire failure, which
could lead to a loss of vehicle
control resulting in an acci-dent.

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

H15
Warning and indicator lights
OFE048100C1. Power gauge
2. Speedometer
3. Fuel cell stack temperature gauge
4. Fuel gauge
5. Odometer/LCD display/Trip computer
6. Warning and indicator lights
Air bag warningCharging system warningElectronic Stability Control (ESC) OFF indicator Forward Collision-
Avoidance Assist (FCA)
system warning
Seat belt warningLow fuel level warning Immobilizer Indicator
Parking brake &
brake fluid warningLow tire pressure warningTurn Signal IndicatorEPBElectronic Parking Brake
(EPB) warning
Regenerative brake
warningService warning High Beam IndicatorAUTO
HOLDAUTO HOLD Indicator
Anti-lock brake system
(ABS) warningPower down warning Light ON IndicatorMaster Warning
Electronic Brake force
Distribution (EBD) warning
Hydrogen gas leak
warning (Red) Ready indicatorLED Headlamp warning
Hydrogen leak sensor
warning (Yellow)Lane Keeping Assist (LKA) system indicator
Electric Power Steering
(EPS) warningElectronic Stability Control (ESC) indicator
Yellow
❈ For more details, refer to the ‘Instrument cluster’ in Chapter 3.

H37
CategoryQuestionsAnswers
Cluster /
Warning Lamp (9 items)
27. What should I do if the service warning
light turns on?If the service warning light turns on during "READY" status or in driv-
ing mode, it may indicate a malfunction in operation with any fuel cell
system. Please contact an authorized HYUNDAI dealer for service.
28. What should I do if the master warninglight turns on?If the service warning light turns on when there is a malfuction in
operation in any of the vehicle systems. Please look at the LCD dis-
play for details and contact an authorized HYUNDAI dealer for serviceif needed.
29. How much farther (roughly) can I drivemy FCEV when the fuel warning light
turns on? (Remaining mileage)You can continue driving for an additional 70~90 km (40~55 miles).
It may depend on driving mode.
30. When restarting the vehicle, the " "indicator turns on on the cluster. What does this mean?It means that the fuel cell system is working in good order and your
car is ready to drive.
31. Why does the vehicle’s hydrogen tankhave a life expectancy?
The hydrogen tank is frequently refueled with the high pressure
hydrogen gas and the number of times refueling the vehicle is limit-
ed to 5,000 times (or 15 years). The hydrogen storage system
counts the number of times the vehicle is refueled and turns on the
warning light when the vehicle is refueled for over 4,995 times.
Every time the vehicle is turned on the warning message “Replace
hydrogen tank. Maximum number of refill cycles exceeded
” is displayed on the cluster. The vehicle can be driven about 1-3
million kilometers until the vehicle is refueled 5,000 times, meaning
that the hydrogen tank is used semi-permanently under common
driving condition.

I-10
Tire Specification and Pressure Label ..............................8-8
Tires and Wheels .....................................................7-29, 8-4
All Season Tires .........................................................7-42
Check Tire Inflation Pressure .....................................7-31
Low Aspect Ratio Tires ..............................................7-43
Radial-Ply Tires ..........................................................7-42
Recommended Cold Tire Inflation Pressures.............7-30
Snow Tires ..................................................................7-42
Summer Tires .............................................................7-42
Tire Care .....................................................................7-29
Tire Maintenance ........................................................7-34
Tire Replacement........................................................7-33
Tire Rotation...............................................................7-32
Tire Sidewall Labeling ...............................................7-34
Tire Terminology and Definitions ..............................7-38
Tire Traction ...............................................................7-34
Wheel Alignment and Tire Balance ...........................7-33
Wheel Replacement....................................................7-34
Towing ............................................................................6-24
Emergency Towing.....................................................6-26
Removable Towing Hook...........................................6-25
Towing Service ...........................................................6-24
Traction Motor Number ....................................................8-8
Trailer Towing...............................................................5-130
Trip Computer .................................................................3-85 USB Charger .................................................................3-169
Vehicle Certification Label ...............................................8-7
Vehicle Identification Number (VIN) ...............................8-7
Vehicle Load Limit .......................................................5-125
Tire Loading Information Label...............................5-125
Vehicle Stability Management (VSM)............................5-34
Volume and Weight ...........................................................8-5
Warning and Indicator Lights .........................................3-65
Washer Fluid ...................................................................7-20 Checking the Washer Fluid Level ..............................7-20
Welcome System.............................................................3-99
Windows .........................................................................3-33 Power Windows..........................................................3-34
Windshield Defrosting and Defogging .........................3-158 Auto Defogging System (Additional Feature with Automatic Temperature Control System) .....3-160
Rear Window Defroster............................................3-161
Winter Driving ..............................................................5-122
Snow or Icy Conditions............................................5-122
Winter Precautions ...................................................5-123
Index
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