2023 HYUNDAI NEXO warning

H42
CategoryQuestionsAnswers
Fuel Cell
Stack/High VoltageBattery
(4 items)
39. What happens if hydrogen gas leaks
from the fuel cell stack?
(Red)If hydrogen gas leaks beyond what's tolerable from the fuel cell stack,
a hydrogen sensor installed in the system detects the leak and in
response, turns ON the hydrogen gas leak warning light in the cluster.
40. Can the fuel cell stack explode or burnout due to overheating?The fuel cell stack passed a high temperature test and is deemed
safe, so it is unlikely to explode.
41. Which symptoms occur if the fuel cellsystem malfunctions?
If the fuel cell system malfunctions, warning lights specific to the
actual problem appear on the LCD display. When this happens, the
vehicle speed may be limited, or the fuel cell system may shut
down. DO NOT lose your composure if this happens. Park your vehi-
cle and turn OFF the vehicle. Then, contact an authorized HYUNDAI
dealer for service.
42. Is the recharge performance of the high
voltage battery reduced depending on its length of use? Like any vehicle component, the high voltage battery will decrease
in performance as it ages over time. However, the high voltage bat-
tery of the FCEV is durable enough to work at peak performance
beyond the warranty period.
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I-2
12V Battery .....................................................................7-27
Battery Recharging .....................................................7-28
Reset Features ............................................................7-28
AC Inverter ...................................................................3-167
Accessing Your Vehicle ....................................................3-3 Immobilizer System ...................................................3-10
Smart Key.....................................................................3-3
Active Hood Lift System ................................................2-70 System Activation ......................................................2-70
System Limitation ......................................................2-71
System Malfunction ...................................................2-72
Air Bag - Advanced Supplemental Restraint System.....2-47 Additional Safety Precautions ....................................2-69
Air Bag Warning Labels.............................................2-69
Curtain air bags ..........................................................2-51
Driver's front air bag ..................................................2-49
How Does the Air Bag System Operate? ...................2-52
Occupant Classification System (OCS) .....................2-58
Passenger's front air bag.............................................2-49
Side air bags ...............................................................2-50
SRS Care ....................................................................2-68
What to Expect After an Air Bag Inflates ..................2-57
Where Are the Air Bags? ...........................................2-49
Why Didn't My Air Bag Go Off in a Collision?........2-63 Air Bag Warning Labels .................................................2-69
Air Cleaner......................................................................7-20
Filter Replacement .....................................................7-20
Air Conditioning System ..................................................8-5
Anti-lock Brake System (ABS) ......................................5-29
Appearance Care .............................................................7-62 Exterior Care ..............................................................7-62
Interior Care ...............................................................7-67
Auto Hold .......................................................................5-25
Automatic Climate Control System..............................3-147 Automatic Temperature Control Mode ....................3-148
Manual Temperature Control Mode .........................3-148
System Maintenance ................................................3-156
System Operation .....................................................3-154
Before Driving ..................................................................5-4 Before Entering the Vehicle .........................................5-4
Before Starting .............................................................5-4
Blind-Spot Collision Warning/ Blind-Spot Collision-Avoidance Assist .......................5-53
Detecting Sensor (Front View Camera and Rear Corner Radar) .................................................5-59
Limitations of the System ..........................................5-62
System Description ....................................................5-53
System Setting and Activation ...................................5-54
Warning and System Control .....................................5-57
Index
A
B

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
I
Index
C
D

I-4
Driver Attention Warning (DAW) System......................5-94
Resetting the System ..................................................5-95
System Malfunction ...................................................5-96
System Setting and Activation ...................................5-94
System Standby ..........................................................5-96
Driver's front air bag .......................................................2-49
Electric Power Steering (EPS) ........................................3-20
Electronic Parking Brake (EPB) .....................................5-19
Electronic Stability Control (ESC) .................................5-31
Emergency Fuel Filler Door Release..............................3-57
Explanation of Scheduled Maintenance Items ...............7-12
Exterior Features .................................................3-42, 3-176 Emergency Fuel Filler Door Release .........................3-57
Fuel Filler Door ..........................................................3-55
Hood ...........................................................................3-42
Non-Powered Tailgate ................................................3-43
Power Tailgate ............................................................3-45
Roof Side Rails ........................................................3-176
Smart Tailgate.............................................................3-51
Exterior Lights ................................................................3-89 AUTO headlamp position ..........................................3-89
Battery saver function ................................................3-95
Daytime running light (DRL) ....................................3-89
Headlamp position......................................................3-90
Headlight time-out function .......................................3-95
High Beam Assist (HBA) ...........................................3-91 High beam operation ..................................................3-91
Lane change signals ...................................................3-94
Parking lamp position ................................................3-90
Turn signals ................................................................3-94
Exterior Overview.............................................................1-2
Features of FCEV............................................................H10 Emergency while driving............................................H26
FCEV mode ................................................................H21
Fuel filler door ............................................................H12
How to Start the Vehicle .............................................H10
How to Stop the Vehicle .............................................H11
If the 12 volt battery is discharged .............................H25
LCD Display Messages ..............................................H16
Virtual Engine Sound System .....................................H11
Warning and indicator lights.......................................H15
When the high voltage battery is weak ......................H25
Floor Mat Anchor(s) .....................................................3-172
Forward Collision-Avoidance Assist (FCA) System ......5-39 FCA Sensor (Front Radar/Front View Camera).........5-44
FCA Warning Message and System Control..............5-41
Limitations of the System ..........................................5-47
System Malfunction ...................................................5-46
System Setting and Activation ...................................5-39
Front air ventilation seat .................................................2-19
Front seat warmers..........................................................2-17
Front Seats ........................................................................2-6
Index
E
F

I-5
Front Windshield Washers ............................................3-103
Front Windshield Wipers ..............................................3-101
Fuel Cell Power Module Compartment ....................1-6, 7-3
Fuel Filler Door ..............................................................3-55
Fuses ...............................................................................7-45
Fuel Cell Power Module Compartment Panel Fuse Replacement ...................................................7-47
Fuse/Relay Panel Description ....................................7-49
Instrument Panel Fuse Replacement ..........................7-46
Gauges and Meters .........................................................3-59
Glove Box .....................................................................3-163
Hazard Warning Flasher ...................................................6-2
Head Restraints ...............................................................2-13
Heated Steering Wheel ...................................................3-22
Hill-Start Assist Control (HAC) .....................................5-36
Hood................................................................................3-42
Horn ................................................................................3-21 If the 12 Volt Battery is Discharged .................................6-5
Before Jump Starting....................................................6-5
Jump Starting................................................................6-6
If the Vehicle Overheats....................................................6-9
If the Vehicle Will Not Start .............................................6-4
If You Have a Flat Tire (With Tire Mobility Kit)...........6-17
Immobilizer System ........................................................3-10
Important Safety Precautions............................................2-2 Air Bag Hazards ...........................................................2-2
Always Wear Your Seat Belt ........................................2-2
Control Your Speed ......................................................2-3
Driver Distraction.........................................................2-2
Keep Your Vehicle in Safe Condition ..........................2-3
Restrain All Children....................................................2-2
In Case of an Emergency While Driving .........................6-2
Emergency venting of hydrogen gas............................6-3
If a fire occurs ..............................................................6-3
If a submersion in water occurs ...................................6-3
If an accident occurs.....................................................6-2
If the vehicle stalls at a crossroad or crossing .............6-3
If the vehicle stalls while driving .................................6-4
If you have a flat tire while driving .............................6-4
I
Index
G
H
I

I-6
Infotainment system..........................................................4-2
Antenna ........................................................................4-2
Audio/Video/Navigation system (AVN) ......................4-4
Blue Link ®
center .........................................................4-4
Bluetooth ®
Wireless Technology..................................4-4
Steering wheel audio controls ......................................4-3
USB and iPod ®
port .....................................................4-2
Inside Rearview Mirror...................................................3-23
Instrument Cluster...........................................................3-58 Gauges and Meters .....................................................3-59
Instrument Cluster Control .........................................3-59
LCD Display Messages ..............................................3-76
Warning and Indicator Lights.....................................3-65
Instrument Cluster Control .............................................3-59
Instrument Panel Overview ..............................................1-5
Interior Features ............................................................3-164 AC Inverter...............................................................3-167
Cargo Security Screen ..............................................3-174
Clock ........................................................................3-171
Coat Hook ................................................................3-172
Cup Holder ...............................................................3-164
Floor Mat Anchor(s) .................................................3-172
Luggage Net Holder .................................................3-173
Power Outlet.............................................................3-166
Sunvisor ....................................................................3-165
USB Charger ............................................................3-169
Wireless Cellular Phone Charging System ..............3-169 Interior Lights .................................................................3-96
Front Door Lamp........................................................3-97
Front Map Lamp ........................................................3-96
Front Room Lamp ......................................................3-97
Glove box lamp ..........................................................3-98
Interior lamp AUTO cut .............................................3-96
Luggage compartment lamp .......................................3-97
Puddle lamp ................................................................3-98
Rear Room Lamp .......................................................3-97
Vanity mirror lamp .....................................................3-98
Welcome light.............................................................3-99
Interior Overview..............................................................1-4
Introduction of FCEV .......................................................H2
Lane Following Assist (LFA) System ............................5-87
LFA Operation ............................................................5-88
Limitations of the System ..........................................5-92
Warning Message .......................................................5-90
Lane Keeping Assist (LKA) System ..............................5-79
Limitations of the System ..........................................5-85
LKA System Function Change ..................................5-86
LKA System Operation ..............................................5-81
Warning Light and Message.......................................5-83
LCD Display ...................................................................3-81
LCD Display Control......................................................3-81
LCD Display Messages ..................................................3-76
Index
L

I-7
LCD Display Modes .......................................................3-82
Leading Vehicle Departure Alert ..................................5-116
System Setting and Activation .................................5-116
Light Bulbs .....................................................................7-57 Daytime Running Lamp Replacement .......................7-58
Front Center Lamp Replacement ...............................7-58
Headlamp Replacement..............................................7-58
High Mounted Stop Lamp..........................................7-59
Interior Light Bulb Replacement ...............................7-60
License Plate Light Bulb Replacement ......................7-60
Parking Lamp Replacement .......................................7-58
Rear Combination Light Bulb Replacement ..............7-59
Side Marker Replacement ..........................................7-58
Side Repeater Lamp Replacement .............................7-58
Turn Signal Lamp Replacement.................................7-58
Lighting ...........................................................................3-89 Exterior Lights............................................................3-89
Interior Lights.............................................................3-96
Welcome System ........................................................3-99
Luggage Net Holder .....................................................3-173 Maintenance Services .......................................................7-4
Owner Maintenance Precautions..................................7-4
Owner's Responsibility.................................................7-4
Mirrors ............................................................................3-23
Inside Rearview Mirror ..............................................3-23
Side View Mirrors ......................................................3-30
Occupant Classification System (OCS)..........................2-58
Owner Maintenance ..........................................................7-5 Owner Maintenance Schedule......................................7-6
Paddle Shifter (Regenerative Braking Control) .............5-17
Parking Distance Warning (Reverse/Forward) System .......................................................................3-105
Passenger's front air bag .................................................2-49
Power Button ....................................................................5-6 POWER Button Positions ............................................5-7
Starting the Vehicle ......................................................5-9
Turning Off the Vehicle..............................................5-10
Power Outlet .................................................................3-166
Power Tailgate ................................................................3-45
I
Index
M
O
P

I-8
Rear Cross-traffic Collision Warning (RCCW)/
Rear Cross-traffic Collision-Avoidance Assist
(RCCA)........................................................................5-67
Limitations of the System ..........................................5-73
System Description ....................................................5-67
System Setting and Activation ...................................5-68
Warning and System Control .....................................5-69
Rear seat warmers ...........................................................2-20
Rear Seats .......................................................................2-10
Rear View Monitor .......................................................3-109
Rear Window Wiper and Washer..................................3-104
Recommended Lubricants and Capacities ........................8-6
Reduction Gear ...............................................................5-11 Good Driving Practices ..............................................5-16
LCD Display Messages ..............................................5-13
Parking........................................................................5-13
Reduction Gear Operation ..........................................5-11
Remote Smart Parking Assist (RSPA) ..........................3-113
Reporting Safety Defects ..................................................8-9 Scheduled Maintenance Services .....................................7-7
Maintenance Under Severe Usage Conditions...........7-10
Normal Maintenance Schedule ....................................7-8
Seat Belts ........................................................................2-21
Additional Seat Belt Safety Precautions ....................2-32
Care of Seat Belts .......................................................2-35
Seat Belt Restraint System .........................................2-24
Seat Belt Safety Precautions ......................................2-21
Seat Belt Warning Light .............................................2-22
Seats ..................................................................................2-4
Front air ventilation seat ............................................2-19
Front seat warmers .....................................................2-17
Front Seats ....................................................................2-6
Head Restraints ..........................................................2-13
Rear seat warmers ......................................................2-20
Rear Seats ...................................................................2-10
Safety Precautions ........................................................2-5
Side air bags....................................................................2-50
Side View Mirrors...........................................................3-30
Smart Cruise Control With Stop & Go System ..............5-98
Limitations of the System ........................................5-110
Sensor to Detect Distance to the Vehicle Ahead ......5-108
Smart Cruise Control Speed .....................................5-101
Smart Cruise Control Switch .....................................5-99
Index
SR