Hyundai NEXO 2023 Owner's Manual page 45

CUSTOMER Q&A GUIDE (CONT.)
Category
16. Does the FCEV use a different coolant
type from that of standard vehicles?
(Difference between Stack cooling
coolant and Device cooling coolant.)
17. What should I be aware of when park-
ing the vehicle? Can I park the FCEV in
an enclosed underground parking lot?
Vehicle
(Risk of hydrogen gas leak.)
Management
(12 items)
18. If the FCEV will be parked for a long
period, what should I do?
H34
Questions
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 cooling
coolant 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).
Hydrogen gas supply is cutoff after Power-OFF to prevent the hydro-
gen gas from leaking.
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, turn
2. To recharge the high-voltage battery, it is recommended that you
3. If the vehicle does not startup, press the "12V BATT RESET" but-
Answers
off the power using the POWER button and disconnect the (-) ter-
minal of the auxiliary battery (12 V) from the vehicle.
drive your FCEV two or three times a month, for no less than 10
minutes or 2 miles (3 km) during each session.
ton or jump start the vehicle. Otherwise contact an authorized
HYUNDAI dealer.