2023 HYUNDAI NEXO air suspension

7-8
Maintenance
Normal Maintenance Schedule
Months1224364860728496108120132144156168180
Miles×1,00061218243036424854606672788490
Km×1,000102030405060708090100110120130140150
Hydrogen system
(Check the hydrogen leakage)Inspect every 10,000 km (6,000 miles) or 24 months
Air cleaner filterReplace every at 20,000 km (12,000) miles
Device cooling coolantAt first, replace at 200,000 km (120,000 miles) or 10 years :
Thereafter, replace every 48,000 km (30,000 miles) or 24 months
Stack cooling coolantReplace every at 60,000 km (36,000 miles) or 36 months
Ion filterReplace every at 60,000 km (36,000 miles) or 36 months
Reduction gearNo check, No service required
Air conditioner refrigerant/ compressorIIIIIIIIIIIIIII
Cooling system hoses and connec- tions IIIIIIIIIIIIIII
Brake lines, hoses and connections (including booster)IIIIIIIIIIIIIII
Clutch (if equipped) and brake
pedal free playIIIIIIIIIIIIIII
Brake discs and padsIIIIIIIIIIIIIII
Driveshaft and bootsIIIIIII
Front suspension ball jointsIIIIIIIIIIIIIII
Maintenance Intervals
Maintenance Item
I : Inspect and if necessary, adjust, correct, clean or replace.
R : Replace

7-11
7
MaintenanceSevere driving conditions
A - Repeatedly driving short distances of less than 8 km(5 miles ) in normal temperature or less than 16 km (10 miles)
in freezing temperature
B - Extensive low speed driving for long distances
C - Driving on rough, dusty, muddy, unpaved, graveled or salt- spread roads
D - Driving in areas using salt or other corrosive materials or in very cold weather E - Driving in sandy areas
F - Driving in heavy traffic area over 32°C (90°F)
G- Driving on uphill, downhill, or mountain road
H - Towing a Trailer, or using a camper, or roof rack
I - Driving as a patrol car, taxi, other commercial use or vehicle
towing
J - Driving over 170 km/h (106 mph)
K - Frequently driving in stop-and-go conditions
Maintenance itemMaintenance operationMaintenance intervalsDriving condition
Driveshaft and bootsIInspect more frequently
depending on the conditionC, D, E, F, G, H, I, J
Front suspension ball jointsIInspect more frequently
depending on the conditionC, D, E, F, G
Parking brakeIInspect more frequently
depending on the conditionC, D, G, H
Steering gear rack, linkage and bootsIInspect more frequently
depending on the conditionC, D, E, F, G
Climate control air filterRReplace more frequently
depending on the conditionC, E

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 reservoir,
hoses and connections for leakage
and damage. Replace any damaged
parts.
Coolant
The coolant should be changed at
the intervals specified in the mainte-
nance schedule.
Reduction Gear Fluid
Inspect the reduction gear fluid according to the maintenance sched-
ule.
Brake Hoses and Lines
Visually check for proper installation,
chafing, cracks, deterioration and
any leakage. Replace any deteriorat-
ed or damaged parts immediately.
Brake Fluid
Check brake fluid level in the brake
fluid reservoir. The level should be
between the MIN and the MAX
marks on the side of the reservoir.
Use only hydraulic brake fluid con-
forming to DOT 3 or DOT 4 specifi-cation.
Brake Discs, Pads, Calipers
and Rotors
Check the pads for excessive wear,
discs for run out and wear, and
calipers for fluid leakage.
Suspension Mounting Bolts
Check the suspension connections
for looseness or damage. Retighten
to the specified torque.
Steering Gear Box, Linkage &
Boots/Lower Arm Ball Joint
With the vehicle stopped and the
vehicle off, check for excessive free-
play in the steering wheel. Check the
linkage for bends or damage. Check
the dust boots and ball joints for
deterioration, cracks, or damage.
Replace any damaged parts.
Drive Shafts and Boots
Check the drive shafts, boots and
clamps for cracks, deterioration, or
damage. Replace any damaged
parts and, if necessary, repack the
grease.
Air Conditioning Refrigerant
Check the air conditioning lines and
connections for leakage and dam-
age.