2023 HYUNDAI NEXO cooling

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Page 406 of 558

HYUNDAI NEXO 2023  Owners Manual 6-9
What to do in an emergency
1. Pull off the road and stop as soonas it is safe to do so.
2. Shift to P (Park) and set the park- ing brake. If the air conditioning is 
on, turn it off.
3. If coolant

Page 407 of 558

HYUNDAI NEXO 2023  Owners Manual 6-10
6. If you cannot find the cause of the
overheating, wait until the radiator 
temperature has returned to nor-
mal. Then, if coolant has beenlost, carefully add coolant to the
reservoir to bring t

Page 425 of 558

HYUNDAI NEXO 2023  Owners Manual 7
Maintenance
7
Maintenance
Fuel Cell Power Module Compartment ...............7-3 
Maintenance Services ...........................................7-4Owners Responsibility ...........................

Page 427 of 558

HYUNDAI NEXO 2023  Owners Manual 7-3
7
Maintenance
FFUU EELL  CC EE LLLL  PP OO WW EERR   MM OODDUU LLEE   CC OO MM PPAA RRTTMM EENN TT
1. Brake fluid reservoir 
2. Air cleaner 
3. Fuse box 
4. Windshield washer fluid reservoir 
5. D

Page 430 of 558

HYUNDAI NEXO 2023  Owners Manual 7-6
Maintenance
Owner Maintenance Schedule
When you stop for fuel:
• Check for both fuel cell stack andDevice cooling coolant level in 
coolant reservoir.
 Check the windshield washer fluid level.

Page 432 of 558

HYUNDAI NEXO 2023  Owners Manual 7-8
Maintenance
Normal Maintenance Schedule
Months1224364860728496108120132144156168180
Miles×1,00061218243036424854606672788490
Km×1,000102030405060708090100110120130140150
Hydrogen system  
(Check

Page 434 of 558

HYUNDAI NEXO 2023  Owners Manual 7-10
Maintenance
Maintenance Under Severe Usage Conditions
The following items must be serviced more frequently on cars normally used under severe driving conditions. Refer 
to the chart below for the

Page 436 of 558

HYUNDAI NEXO 2023  Owners Manual 7-12
MaintenanceE
E XX PPLLAA NN AATTIIOO NN  OO FF  SS CC HH EEDD UU LLEE DD   MM AAIINN TTEENN AANN CCEE   IITT EEMM SS
Cooling System
Check cooling system components, 
such as radiator, coolant res
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