Hyundai Equus 2015 Owner's Manual

Maintenance
22 7
Check the condition and connections
of all cooling system hoses and
heater hoses. Replace any swollen
or deteriorated hoses.
The coolant level should
be filled between F and L
marks on the side of the
coolant reservoir when
the engine is cool.
If the coolant level is low, add enough
distilled (deionized) water. Bring the
level to F, but do not overfill. If fre-
quent additions are required, we rec-
ommend that the system be inspect-
ed by an authorized HYUNDAI deal-
er.
Recommended engine coolant
• When adding coolant, use only
deionized water or soft water for
your vehicle and never mix hard
water in the coolant filled at the fac-
tory. An improper coolant mixture
can result in serious malfunction or
engine damage.
• The engine in your vehicle has alu-
minum engine parts and must be
protected by an ethylene-glycol-
based coolant to prevent corrosion
and freezing.
• DO NOT USE alcohol or methanol
coolant or mix them with the spec-
ified coolant.
• Do not use a solution that contains
more than 60% antifreeze or less
than 35% antifreeze, which would
reduce the effectiveness of the
solution.
OBH071004
WARNING
The electric motor
(cooling fan) is con-
trolled by engine
coolant temperature,
refrigerant pressure
and vehicle speed. It may some-
times operate even when the
engine is not running. Use
extreme caution when working
near the blades of the cooling
fan so that you are not injured
by a rotating fan blades. As the
engine coolant temperature
decreases, the electric motor
will automatically shut off. This
is a normal condition.
If your vehicle is equipped with
GDI, the electric motor (cooling
fan) may operate until you dis-
connect the negative battery
cable.

723
Maintenance
For mixture percentage, refer to the
following table.Changing the coolant
We recommend that the coolant be
replaced by an authorized HYUNDAI
dealer.
OBH072005L
WARNING
Radiator cap
Do not remove the radiator cap
when the engine and radiator
are hot. Scalding hot coolant
and steam may blow out under
pressure causing serious
injury.
CAUTION
Put a thick cloth around the
radiator cap before refilling the
coolant in order to prevent the
coolant from overflowing into
engine parts such as the gener-
ator.
WARNING- Coolant
• Do not use radiator coolant or
antifreeze in the washer fluid
reservoir.
• Radiator coolant can severely
obscure visibility when
sprayed on the windshield
and may cause loss of vehicle
control or damage to paint
and body trim.
Ambient
TemperatureMixture Percentage
(volume)
Antifreeze Water
-15°C (5°F) 35 65
-25°C (-13°F) 40 60
-35°C (-31°F) 50 50
-45°C (-49°F) 60 40

Maintenance
24 7
BRAKE FLUID
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 fluid to the
MAX level. The level will fall with
accumulated mileage. This is a nor-
mal condition associated with the
wear of the brake linings.If the fluid level is excessively low, we
recommend that the system be
checked by an authorized HYUNDAI
dealer.
Use only the specified brake fluid.
(Refer to “Recommended lubricants
or capacities” in section 8.)
Never mix different types of fluid.
✽NOTICE
Before removing the brake filler
cap, read the warning on the cap.
WARNING - Brake fluid
When changing and adding
brake fluid, handle it carefully.
Do not let it come in contact
with your eyes. If brake fluid
should come in contact with
your eyes, immediately flush
them with a large quantity of
fresh tap water. Have your eyes
examined by a doctor as soon
as possible.
WARNING - Loss of
brake fluid
In the event the brake system
requires frequent additions of
fluid, we recommend that the
system be inspected by an
authorized HYUNDAI dealer.
CAUTION
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 disposed of properly.
Don't put in the wrong kind of
fluid. A few drops of mineral-
based oil, such as engine oil, in
your brake system can damage
brake system parts.
OBH071006
WARNING
Clean filler cap before remov-
ing. Use only DOT3 or DOT4
brake fluid from a sealed con-
tainer.

725
Maintenance
POWER STEERING FLUID
Checking the power steering
fluid level
With the vehicle on level ground,
check the fluid level in the power
steering reservoir periodically. The
fluid should be between MAX and
MIN marks on the side of the gauge
at the normal temperature.Before adding power steering fluid,
thoroughly clean the area around the
reservoir cap to prevent power steer-
ing fluid contamination.
If the level is low, add fluid to the
MAX level.
In the event the power steering sys-
tem requires frequent addition of
fluid, we recommend that the system
be inspected by an authorized
HYUNDAI dealer.
Use only the specified power steer-
ing fluid. (Refer to "Recommended
lubricants or capacities" in section
8.)
CAUTION
• To avoid damage to the power
steering water pump unit, do
not operate the vehicle for
prolonged periods with a low
power steering fluid level.
• Never start the engine when
the reservoir tank is empty.
• When adding fluid, be careful
that dirt does not get into the
tank.
• Too little fluid can result in
increased steering effort
and/or noise from the power
steering system.
• The use of the non-specified
fluid could reduce the effective-
ness of the power steering sys-
tem and cause damage to it.
OBH078022

Maintenance
26 7
Checking the power steering
hose
Check the connections for oil leaks,
damage and twists in the power
steering hose before driving.
Checking the washer fluid
level
The reservoir is translucent so that
you can check the level with a quick
visual inspection.
Check the fluid level in the washer
fluid reservoir and add fluid if neces-
sary. Plain water may be used if
washer fluid is not available.
However, use washer solvent with
antifreeze characteristics in cold cli-
mates to prevent freezing.
WARNING- Coolant
• Do not use radiator coolant or
antifreeze in the washer fluid
reservoir.
• Radiator coolant can severely
obscure visibility when
sprayed on the windshield
and may cause loss of vehicle
control or damage to paint
and body trim.
• Windshield Washer fluid
agents contain some amounts
of alcohol and can be flamma-
ble under certain circum-
stances. Do not allow sparks
or flame to contact the washer
fluid or the washer fluid reser-
voir. Damage to the vehicle or
occupants could occur.
• Windshield washer fluid is
poisonous to humans and
animals. Do not drink and
avoid contacting windshield
washer fluid. Serious injury or
death could occur.
OBH078008
WASHER FLUID

727
Maintenance
AIR CLEANER
Filter replacement
It must be replaced when necessary,
and should not be washed.
You can clean the filter when inspect-
ing the air cleaner element.
Clean the filter by using compressed
air.
Main air cleaner
1.Push the top of the fastener to
remove the cover.2.Loosen the air cleaner cover
attaching clips and open the cover.
3.Wipe the inside of the air cleaner.
4.Replace the air cleaner filter.
5.Lock the cover with the cover
attaching clips.
OBH071010
OBH078010N
3.8L
5.0LOVI079117L
OBH071011

Maintenance
28 7
Chamber air cleaner (if equipped)
1.Loosen the air cleaner cover
attaching clips and open the cover.2.Replace the air cleaner filter after
pulling up the locking tab (1).
3.Lock the cover with the cover
attaching clips.Replace the filter according to the
Maintenance Schedule.
If the vehicle is operated in extreme-
ly dusty or sandy areas, replace the
element more often than the usual
recommended intervals. (Refer to
“Maintenance under severe usage
conditions” in this section.)
OBH071051
OVI072052
CAUTION
• Do not drive with the air clean-
er 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.
• We recommend that you use
parts for replacement from an
authorized HYUNDAI dealer.
• When you clean the filter, use
the compressed air and blow
the air from the clean side to
the dirty side.

729
Maintenance
CLIMATE CONTROL AIR FILTER (IF EQUIPPED)
Filter inspection
The climate control air filter should
be replaced according to the
Maintenance Schedule. If the vehicle
is operated in severely air-polluted
cities or on dusty rough roads for a
long period, it should be inspected
more frequently and replaced earlier.
When you replace the climate control
air filter, replace it performing the fol-
lowing procedure, and be careful to
avoid damaging other components.
Filter replacement
1.With the glove box open, remove
the stoppers on both sides to allow
the glove box to hang freely on the
hinges.2.Remove the cylinder at the left of
the glove box.
OVI079015
OVI079016

Maintenance
30 7
3.Remove the climate control air fil-
ter case pulling out both sides of
the cover.4.Replace the climate control air fil-
ter.
5.Reassemble in the reverse order of
disassembly.
✽NOTICE
Install a new climate control air fil-
ter in the correct direction with the
arrow symbol (
↓) facing downwards.
Otherwise, the climate control effects
may decrease, possibly with a noise.
OBH078016OVI075200K

731
Maintenance
WIPER BLADES
Blade inspection
✽NOTICE
Commercial hot waxes applied by
automatic car washes have been
known to make the windshield diffi-
cult to clean.
Contamination of either the wind-
shield or the wiper blades with for-
eign matter can reduce the effective-
ness of the windshield wipers.
Common sources of contamination
are insects, tree sap, and hot wax
treatments used by some commer-
cial car washes. If the blades are not
wiping properly, clean both the win-
dow and the blades with a good
cleaner or mild detergent, and rinse
thoroughly with clean water.Blade replacement
When the wipers no longer clean
adequately, the blades may be worn
or cracked, and require replacement.
CAUTION
To prevent damage to the wiper
blades, do not use gasoline,
kerosene, paint thinner, or other
solvents on or near them.
1JBA5122
CAUTION
To prevent damage to the wiper
arms or other components, do
not attempt to move the wipers
manually.
CAUTION
The use of a non-specified
wiper blade could result in
wiper malfunction and failure.