2021 HYUNDAI NEXO Fuel system

H45
CategoryQuestionsAnswers
Explosion or
Fire (5 items)
48. What should I do if the FCEV catches
fire?
1. stop driving the car. Move the shift to P (Park), then step on the
brake to turn OFF the vehicle. The fuel cell stack is shut down,
which cuts off the supply of hydrogen fuel.
2. If possible, open the windows to ventilate the air.
3. If the fire is small enough to get under your own control, use the fire
extinguisher to put it out.
If the fire is much larger, get out of your car and contact the local
fire station to report your FECV is on fire. DO NOT get close to your
car before the fire is completely extinguished.
49. In case of vehicle fire, should I use the
fire extinguisher? Can I use water to
extinguish the fire?
In the event your FCEV catches fire with the power system OFF, the
power source of the high-voltage system is cut off, so you are unlikely
to get shocked while you put out the fire using water. (Even when the
vehicle is submerged in water, there is no risk of getting shocked.)
However, if your car catches fire with the ignition ON, you MUST use
the fire extinguisher. Any attempt to extinguish the fire with water may
cause electric shock.
50. What kind of fire extinguisher should I
use?It is recommended that you use a dedicated fire extinguisher (CO2)
for an electrical fire of the high-voltage system.
51. Can the hydrogen tank explode if it
overheats in very hot weather?The hydrogen tank passed a high temperature test and is deemed
safe, so it is unlikely to explode.
52. In case of vehicle fire, is it possible that
the hydrogen tank will explode?
In case of vehicle fire, a heat-sensitive safety valve is activated to
exhaust the hydrogen gas downward from the tank by force.
Therefore, the hydrogen tank is unlikely to explode. However, addi-
tional flames can flare up from the forced exhaustion of the gas, so
please evacuate to a safe place far away from the vehicle.

I-4
Driver Assist System.....................................................3-105
Parking Distance Warning (Reverse/Forward)
System ...................................................................3-105
Rear View Monitor ...................................................3-109
Surround View Monitoring ......................................3-110
Driver Attention Warning (DAW) System......................5-94
System Setting and Activation ...................................5-94
Resetting the System ..................................................5-95
System Standby ..........................................................5-96
System Malfunction ...................................................5-96
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 Care ...................................................................7-62
Exterior Features .............................................................3-42
Hood ...........................................................................3-42
Non-Powered Liftgate ................................................3-43
Power Liftgate ............................................................3-45
Smart Liftgate.............................................................3-51
Fuel Filler Door ..........................................................3-55
Emergency Fuel Filler Door Release .........................3-57Exterior Features ...........................................................3-176
Roof Side Rails ........................................................3-176
Exterior Lights ................................................................3-89
Exterior Overview.............................................................1-2
Features of FCEV............................................................H10
How to Start the Vehicle .............................................H10
How to Stop the Vehicle .............................................H11
Virtual Engine Sound System .....................................H11
Fuel filler door ............................................................H12
Warning and indicator lights.......................................H15
LCD Display Messages ..............................................H16
FCEV mode ................................................................H21
When the high voltage battery is weak ......................H25
If the 12 volt battery is discharged .............................H25
Emergency while driving............................................H26
Floor Mat Anchor(s) .....................................................3-172
Forward Collision-avoidance Assist (FCA) System.......5-39
System Setting and Activation ...................................5-39
FCA Warning Message and System Control..............5-41
FCA Sensor (Front Radar/Front View Camera).........5-44
System Malfunction ...................................................5-46
Limitations of the System ..........................................5-47
Index
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F

I-5
Front Seats ........................................................................2-6
Front Windshield Washers ............................................3-102
Front Windshield Wipers ..............................................3-101
Fuel Cell Power Module Compartment ............................1-6
Fuel cell power module compartment ..............................7-3
Fuel Filler Door ..............................................................3-55
Fuel cell stack....................................................................H4
Fuses ...............................................................................7-45
Instrument Panel Fuse Replacement ..........................7-46
Fuel cell power module compartment
Panel Fuse Replacement .........................................7-47
Fuse/Relay Panel Description ....................................7-49
Glove Box .....................................................................3-163
Good Braking Practices ..................................................5-36
Hazard Warning Flasher ...................................................6-2
Head Restraints ...............................................................2-13
Heated Steering Wheel ...................................................3-22
High pressure hydrogen storage tanks ..............................H5
Hill-Start Assist Control (HAC) .....................................5-36
Hood................................................................................3-42
Horn ................................................................................3-21If 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 ..........................................................3-9
Important Safety Precautions............................................2-2
Always Wear Your Seat Belt ........................................2-2
Restrain All Children....................................................2-2
Air Bag Hazards ...........................................................2-2
Driver Distraction.........................................................2-2
Control Your Speed ......................................................2-3
Keep Your Vehicle in Safe Condition ..........................2-3
In Case of an Emergency While Driving .........................6-2
If 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
Inside Rearview Mirror...................................................3-23
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