2023 HYUNDAI NEXO battery reset

H34
CategoryQuestionsAnswers
Vehicle
Management (12 items)
16. Does the FCEV use a different coolant type from that of standard vehicles?
(Difference between Stack cooling
coolant and Device cooling coolant.)
Stack cooling coolant is an exclusive coolant for the fuel cell, which
is characterized by its use of a non-ionic anti-corrosion agent (an
additive) and very low electric conductivity. In comparison, the
device cooling coolant is a coolant similar to that used in standard
vehicles and has a very high electric conductivity.
If the stack cooling coolant is used with the electrical cooling sys-
tem, it will corrode the electrical system parts. If the device coolingcoolant is used with the fuel cell cooling system, it will damage the
system insulation resistor due to high electric conductivity. This car-
ries the additional risk of shocking the driver (electric shock).
17. What should I be aware of when park-ing the vehicle? Can I park the FCEV in
an enclosed underground parking lot?
(Risk of hydrogen gas leak.)
Hydrogen gas supply is cutoff after Power-OFF to prevent the hydro- gen gas from leaking.
18. If the FCEV will be parked for a longperiod, what should I do?
For long-term parking situations, a high-voltage battery will gradually
lose its charge [low SOC(State Of Charge)], potentially causing igni-
tion failure.
1. In order to minimize the discharge of the high-voltage battery, turnoff the power using the POWER button and disconnect the (-) ter-
minal of the auxiliary battery (12 V) from the vehicle.
2. To recharge the high-voltage battery, it is recommended that you drive your FCEV two or three times a month, for no less than 10
minutes or 3 km (2 miles) during each session.
3. If the vehicle does not startup, press the "12V BATT RESET" but- ton or jump start the vehicle. Otherwise contact an authorized
HYUNDAI dealer.
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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-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-9
Smart Cruise Control Vehicle-to-Vehicle Distance ..5-105
To Adjust the Sensitivity of Smart Cruise Control ..5-100
To Convert to Cruise Control Mode ........................5-100
Smart Key .........................................................................3-3
Smart Tailgate .................................................................3-51
Special Driving Conditions ...........................................5-118 Driving at Night........................................................5-119
Driving in Flooded Areas .........................................5-120
Driving in the Rain ...................................................5-119
Hazardous Driving Conditions .................................5-118
Highway Driving ......................................................5-120
Reducing the Risk of a Rollover ..............................5-121
Rocking the Vehicle..................................................5-118
Smooth Cornering ....................................................5-119
SRS Care .........................................................................2-68
Stack Cooling Coolant ....................................................7-16 Changing Coolant.......................................................7-18
Checking the Coolant Level .......................................7-16
Steering Wheel ................................................................3-20
Electric Power Steering (EPS) ...................................3-20
Heated Steering Wheel ...............................................3-22
Horn ............................................................................3-21
Tilt Steering/Telescope Steering.................................3-21
Storage Compartment ...................................................3-163 Center Console Storage ............................................3-163
Glove Box ................................................................3-163 Sunroof............................................................................3-37
Resetting the Sunroof .................................................3-40
Sliding the Sunroof ....................................................3-38
Sunroof Open Warning...............................................3-41
Sunroof Opening and Closing ....................................3-38
Sunshade.....................................................................3-39
Tilting the Sunroof .....................................................3-39
Sunvisor ........................................................................3-165
Surround View Monitoring ...........................................3-110
Tailgate ............................................................................3-43
The components of fCEV .................................................H3 Battery system ..............................................................H5
FCEV powertrain ..........................................................H4
Fuel cell stack ..............................................................H4
High pressure hydrogen storage tanks..........................H5
Theft-Alarm System .......................................................3-19
Tilt Steering/Telescope Steering .....................................3-21
Tire Pressure Monitoring System (TPMS) .....................6-11 Changing a Tire with TPMS ......................................6-15
Check Tire Pressure ....................................................6-11
Low Tire Pressure LCD Display with Position Indicator ..................................................................6-13
Low Tire Pressure Telltale..........................................6-13
Tire Pressure Monitoring System...............................6-12
TPMS Malfunction Indicator .....................................6-14
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