air condition GENESIS G90 2018 Service Manual

7-8
Maintenance
At least twice a year:(i.e., every Spring and Fall)
Check radiator, heater and air con-
ditioning hoses for leaks or dam-
age.
Check windshield washer spray and wiper operation. Clean wiper
blades with clean cloth dampened
with washer fluid.
Check headlamp alignment.
Check muffler, exhaust pipes, shields and clamps.
Check the seat belts for wear and function.
At least once a year:
Clean body and door drain holes.
Lubricate door hinges and hoodhinges.
Lubricate door and hood locks and latches.
Lubricate door rubber weather strips.
Lubricate door checker.
Check the air conditioning system.
Inspect and lubricate automatic transmission linkage and controls.
Clean the battery and terminals.
Check the brake fluid level. Follow Normal Maintenance Schedule
if the vehicle is usually operated where
none of the following conditions apply.
If any of the following conditions apply,
you must follow the Maintenance
Under Severe Usage Conditions.
Repeated driving short distance of
less than 5 miles (8 km) in normal
temperature or less than 10miles
(16 km) in freezing temperature
Extensive engine idling or low speed driving for long distances
Driving on rough, dusty, muddy, unpaved, graveled or salt-spread
roads
Driving in areas using salt or other corrosive materials or in very cold
weather
Driving in heavy dust condition
Driving in heavy traffic area
Driving on uphill, downhill, or mountain road repeatedly
Towing a trailer or using a camper, or roof rack
Driving as a patrol car, taxi, other commercial use of vehicle towing
Frequently driving in stop-and-go condition
For additional information or assis-
tance see an authorized retailer ofGenesis Branded products.
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7-10
Maintenance
Normal Maintenance Schedule (Tau 5.0 GDI) (CONT.)I : Inspect and if necessary, adjust, correct, clean or replace.
R : Replace or change.
Number of months or driving distance, whichever comes first
180112.5180I
At first, replace at 120,000 miles (192,000 km) or 10 years
after that, replace every 30,000 miles (48,000 km) or 24 months
IIIIIIIIIII
168105168IIIIIIIIIIII
15697.5156IIIIIIIIIIII
14490144IIIIIIIIIIII
13282.5132IIIIIIIIIIII
12075120IIIIIIIIIIII
10867.5108IIIIIIIIIIII
966096IIIIIIIIIIII
8452.584IIIIIIIIIIII
724572IIIIIIIIIIII
6037.560IIIIIIIIIIII
483048IIIIIIIIIIII
3622.536IIIIIIIIIIII
241524IIIIIIIIIIII
127.512IIIIIIIIIIII
MonthsMiles×1,000Km×1,000
Vacuum hoseEngine coolantBattery conditionBrake lines, hoses and connectionsFront brake disc/pads, calipersRear brake disc/padsSteering gear rack, linkage and boots /
lower arm ball joint, upper arm ball jointDriveshaft and bootsSuspension mounting boltsAir conditioner refrigerantAir conditioner compressorPropeller shaftExhaust pipe and muffler
MAINTENANCE INTERVALS
MAINTENANCE
ITEM

7-12
Maintenance
The following items must be serviced more frequently on cars normally used
under severe driving conditions. Refer to the chart below for the appropriate
maintenance intervals.
R : Replace
I : Inspect and, after inspection, clean, adjust, repair or replace if neces\
sary
Maintenance Under Severe Usage Conditions (Tau 5.0 GDI)
Maintenance itemMaintenance operationMaintenance IntervalsDriving
condition
Engine oil and filterREvery 3,750 miles
(6,000 km) or 6 monthsA, B, C, D, E,
F, G, H, I, J, K
Air cleaner filterIMore frequentlyC, E
Spark plugs RMore frequentlyA, B, H, I, K
Automatic transmission
fluidREvery 60,000 miles (96,000 km) A, C, D, E, F,G, H, I
Front brake disc/
pads, calipersIMore frequentlyC, D, G, H
Rear brake disc/padsIMore frequentlyC, D, G, H
Parking brakeIMore frequentlyC, D, G, H
Steering gear box,
linkage & boots/
Lower arm ball joint,
upper arm ball joint
IMore frequentlyC, D, E, F, G, H, I
Drive shafts and bootsIEvery 3,750 miles
(6,000 km) or 6 monthsC, D, E, F, G, H, I, J
Front(AWD)/
rear differential oilREvery 75,000 miles(120,000 km)C, G, H, I, J
Climate control air filter
(for evaporator and
blower unit)
RMore frequentlyC, E
Propeller shaftIEvery 7,500 miles
(12,000 km) or 6 monthsC, E

7-15
07
Normal Maintenance Schedule (Lambda 3.3 Turbo-GDI) (CONT.)I : Inspect and if necessary, adjust, correct, clean or replace.
R : Replace or change.
Number of months or driving distance, whichever comes first
18090150I
At first, replace at 120,000 miles (200,000 km) or 10 years
after that, replace every 30,000 miles (50,000 km) or 24 months
IIIIIIIIIII
16884140IIIIIIIIIIII
15678130IIIIIIIIIIII
14472120IIIIIIIIIIII
13266110IIIIIIIIIIII
12060100IIIIIIIIIIII
1085490IIIIIIIIIIII
964880IIIIIIIIIIII
844270IIIIIIIIIIII
723660IIIIIIIIIIII
603050IIIIIIIIIIII
482440IIIIIIIIIIII
361830IIIIIIIIIIII
241220IIIIIIIIIIII
12610IIIIIIIIIIII
MonthsMiles×1,000Km×1,000
Vacuum hoseEngine coolantBattery conditionBrake lines, hoses and connectionsFront brake disc/pads, calipersRear brake disc/padsSteering gear rack, linkage and boots /
lower arm ball joint, upper arm ball jointDriveshaft and bootsSuspension mounting boltsAir conditioner refrigerantAir conditioner compressorPropeller shaftExhaust pipe and muffler
MAINTENANCE INTERVALS
MAINTENANCE
ITEM

7-17
07
The following items must be serviced more frequently on cars normally used
under severe driving conditions. Refer to the chart below for the appropriate
maintenance intervals.
R : Replace
I : Inspect and, after inspection, clean, adjust, repair or replace if neces\
sary
Maintenance Under Severe Usage Conditions (Lambda 3.3 Turbo-GDI)
Maintenance itemMaintenance
operationMaintenance IntervalsDriving
condition
Engine oil and filterREvery 3,000 miles
(5,000 km) or 6 monthsA, B, C, D, E,
F, G, H, I, J, K
Air cleaner filterIMore frequentlyC, E
Spark plugs RMore frequentlyA, B, H, I, K
Automatic transmission
fluidREvery 60,000 miles (100,000 km) A, C, D, E, F, G, H, I
Front brake disc/
pads, calipersIMore frequentlyC, D, G, H
Rear brake disc/padsIMore frequentlyC, D, G, H
Parking brakeIMore frequentlyC, D, G, H
Steering gear box,
linkage & boots/
Lower arm ball joint,
upper arm ball joint
IMore frequentlyC, D, E, F, G, H, I
Drive shafts and bootsIEvery 3,000 miles
(5,000 km) or 6 monthsC, D, E, F, G, H, I, J
Front (AWD)/
rear differential oilREvery 72,000 miles(120,000 km)C, G, H, I, J
Climate control air filter
(for evaporator and
blower unit)
RMore frequentlyC, E
Propeller shaftIEvery 3,000 miles
(5,000 km) or 6 monthsC, E

7-19
07
Engine Oil and Filter
The engine oil and filter should be
changed at the intervals specified in
the maintenance schedule. If the car
is being driven in severe conditions,
more frequent oil and filter changes
are required.
Drive Belts
Inspect all drive belts for evidence of
cuts, cracks, excessive wear or oil
saturation and replace if necessary.
Drive belts should be checked peri-
odically for proper tension and
adjusted as necessary.
Fuel Filter
A clogged-up fuel filter may limit the
vehicle driving speed, damage the
emission system, and cause the
hard starting. When a considerable
amount of foreign substances are
accumulated in the fuel tank, the fuel
filter should be replaced.
Upon installing a new fuel filter, oper-
ate the engine for several minutes,
and check the connections for any
leakages. Fuel filters should be
installed by an authorized retailer of
Genesis Branded products.
Fuel Lines, Fuel Hoses and
Connections
Check the fuel lines, fuel hoses and
connections for leakage and dam-
age. Have an authorized retailer of
Genesis Branded products replace
any damaged or leaking parts imme-
diately.
Vapor Hose and Fuel Filler
Cap
The vapor hose and fuel filler cap
should be inspected at those inter-
vals specified in the maintenance
schedule. Make sure a new vapor
hose or fuel filler cap is correctly
replaced.
Air Cleaner Filter
A Genesis/Hyundai air cleaner filter
is recommended when the filter is
replaced.
Spark Plugs
Make sure to install new spark plugs
of the correct heat range.
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7-21
07
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 specifica-
tion.
Brake Transmission Fluid
Check the pads for excessive wear,
discs for run out and wear, and
calipers for fluid leakage.
Exhaust Pipe and Muffler
Visually inspect the exhaust pipes,
muffler and hangers for cracks, dete-
rioration, or damage. Start the
engine and listen carefully for any
exhaust gas leakage. Tighten con-
nections or replace parts as neces-
sary.
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
engine 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.

7-27
07
Checking the Brake Fluid
Level
Check the fluid level in the reservoir
periodically. The fluid level should be
between MAX and MIN marks on the
side of the reservoir.
Before removing the reservoir cap
and adding brake fluid, clean the
area around the reservoir cap thor-
oughly to prevent brake fluid contam-
ination.
If the level is low, add the specified
brake fluid to the MAX level. The level
will fall with accumulated mileage.
This is a normal condition associated
with the wear of the brake linings. If
the fluid level is excessively low, have
the brake system checked by an
authorized retailer of Genesis
Branded products. Do not allow brake fluid to con-
tact the vehicle's body paint, as
paint damage will result.
Brake fluid, which has been exposed to open air for an
extended time should NEVER be
used as its quality cannot be
guaranteed. It should be dis-
posed of properly.
Do not use the wrong kind of brake fluid. A few drops of min-
eral based oil, such as engine
oil, in your brake system can
damage brake system parts.
Information
Use only the specified brake fluid
(refer to "Recommended Lubricants
and Capacities" in chapter 8).
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If the brake system requires fre-
quent additions of fluid this could
indicate a leak in the brake sys-
tem. Have the vehicle inspected
by an authorized retailer of
Genesis Branded products.
WARNING
Do not allow brake fluid to come
in contact with your eyes. If
brake fluid comes in contact
with your eyes, flush your eyes
with clean water for at least 15
minutes and get immediate
medical attention.
WARNING

7-29
07
Filter Replacement
The air cleaner filter can be cleaned
for inspection using compressed air.
Do not attempt to wash or to rinse it,
as water will damage the filter.
If soiled, the air cleaner filter must be
replaced.
Visit an authorized retailer of
Genesis Branded products to
replace the air cleaner filter.
Replace the filter according to the
Maintenance Schedule
Information
If the vehicle is operated in extremely
dusty or sandy areas, replace the ele-
ment more often than the usual rec-
ommended intervals (refer to
"Maintenance Under Severe Usage
Conditions" in this chapter). Do not drive with the air cleaner
filter removed. This will result in
excessive engine wear.
When removing the air cleaner filter, be careful that dust or dirt
does not enter the air intake, or
damage may result.
Use Genesis/Hyundai Part, use of non-Genesis/Hyundai Part
could damage the air flow sen-
sor.
NOTICE
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7-39
07
Check Tire Inflation Pressure
Check your tires, including the spare
tire, once a month or more.
How to check
Use a good quality tire pressure
gauge to check tire pressure. You
can not tell if your tires are properly
inflated simply by looking at them.
Radial tires may look properly inflat-
ed when they are under-inflated.
Remove the valve cap from the tire
valve stem. Press the tire gauge firm-
ly onto the valve to get a pressure
measurement. If the cold tire inflation
pressure matches the recommended
pressure on the tire and loading
information label, no further adjust-
ment is necessary. If the pressure is
low, add air until you reach the rec-
ommended pressure. Make sure to
put the valve caps back on the valve
stems. Without the valve cap, dirt or
moisture could get into the valve
core and cause air leakage. If a valve
cap is missing, install a new one as
soon as possible.
If you overfill the tire, release air by
pushing on the metal stem in the
center of the tire valve. Recheck the
tire pressure with the tire gauge. Be
sure to put the valve caps back on
the valve stems. Without the valve
cap, dirt or moisture could get into
the valve core and cause air leakage.
If a valve cap is missing, install a new
one as soon as possible.
Tire Rotation
To equalize tread wear, Genesis
Branded Vehicle recommends that
the tires be rotated every 7,500 miles
(12,000 km) or sooner if irregular
wear develops.
During rotation, check the tires for
correct balance.
When rotating tires, check for uneven
wear and damage. Abnormal wear is
usually caused by incorrect tire pres-
sure, improper wheel alignment, out-
of-balance wheels, severe braking or
severe cornering. Look for bumps or
bulges in the tread or side of tire.
Replace the tire if you find either of
these conditions. Replace the tire if
fabric or cord is visible. After rotation,
be sure to bring the front and rear tire
pressures to specification and check
lug nut tightness (proper torque is
79~94 lbf·ft [11~13 kgf·m]).