cooling Hyundai Coupe 2008 Service Manual

6OWNER MAINTENANCE
8
o The engine oil consumption isstrongly effected by the viscosity and quality of oil, engine rpm and driving condition etc. More engine oil may be consumed under severe driving conditions such as high speeds, frequent acceleration and deceleration,compared to normal driving.
G350A01A-EAT
ENGINE OIL CONSUMPTION Function of engine oil
Engine oil has the primary function of
lubricating and cooling the inside of the engine. Engine oil consumption
It is normal that an engine should
consume some engine oil in the course of normal driving. The cause of oil consumption in a normal engine are asfollows;
o Engine oil is used to lubricate pis- tons, piston rings and cylinders. A thin film of oil is left on the cylinder wall when a piston moves downwards in the cylinder. High negative pressure generated dur-ing engine operation sucks some of the oil into the combustion cham- ber.This oil with some oil of the cylin-der wall is burned by the high tem-perature combustion gases during the combustion process.
!WARNING:
Be very careful not to touch the radiator hose when adding the en- gine oil as it may be hot enough to burn you.

6
OWNER MAINTENANCE
9
!
ENGINE COOLANT CHECKING AND REPLACING
SG050A1-E
WARNING:
Do not remove the radiator cap
when the engine is hot, since the system is pressurised and coolant may be ejected from the radiator resulting in scalding. NOTE: It is imperative that vehicles fitted with an air conditioning systemhave a coolant concentration of the recommended strength at all times. The use of the air condition-ing system when the cooling sys- tem is filled with water only will result in the heater matrix freezingand subsequently bursting.
SG050B1-E
Coolant recommendations
Only ethylene glycol based coolantwith a corrosion inhibitor suited to aluminium alloy engine components should be used in the cooling system.No further additives or inhibitors should be used. The coolant specific gravity should be checked as pre-scribed in the maintenance schedule to ensure adequate frost and corro- sion protection. In addition, the en-gine coolant must be replaced at the specified interval since the corrosion inhibitor properties deteriorate withtime.It is important to note that whilst anincrease in the concentration of anti freeze gives an increase in the level of frost protection, a solution which isin excess of 65% anti freeze will result in reduced frost protection and engine overheating. Therefore therecommended concentration of 50% should not be exceeded for general use. The use of methanol based anti freeze compounds may result in engine over- heating and will invalidate the vehiclewarranty.

6
OWNER MAINTENANCE
11CHANGING THE AIR CLEANER FILTER
G070A01E-AAT To change the filter, unsnap the clips around the cover. When this is done, the cover can be lifted off, the oldfilter removed and the new filter put in its place. Genuine Hyundai Replace- ment Parts are recommended.
HGK5010
! CAUTION:
o Operating your vehicle without a proper air cleaner filter in place can result in excessive engine wear.
o When removing the air cleaner filter, be careful that dust or dirtdoes not enter the air intake. These may result in damage tothe air cleaner filter.
G050D04E
!WARNING:
The cooling fan is controlled by engine coolant temperature and may sometimes operate even when theengine is not running. Use extreme caution when working near the blades of the cooling fan so thatyou are not injured by a rotating fan blade. As the engine coolant tem- perature decreases, the fan will au-tomatically shut off. This is a nor- mal condition.
5. Prepare a suitable quantity of new
engine coolant (refer to section 9) and pour this into the radiator.
6. Start the engine with the radiator
cap still removed and continue toadd coolant as the level decreases as air is expelled from the system. When the level remains constant,replace the radiator cap and re- plenish the coolant reservoir.
7. When the engine is hot, check to ensure that no coolant leaks arepresent.

6OWNER MAINTENANCE
16
HGK5012
SG120D1-E
Brake Fluid Level
!
SG120A1-E BRAKE SYSTEM CHECK- ING
CAUTION:
Correct operation of the braking
system is essential to the safe operation of the vehicle and there- fore, any maintenance operationsother than those listed below should be entrusted to a Hyundai authorised repairer.
!WARNING:
The electric engine cooling fan au-
tomatically switches on and off ac- cording to engine temperature. Be careful to keep away from the fan during this check as it may switchon at any time.
NOTE: Only lint free cloth should be used for wiping the dipstick. The pres- ence of lint within the transaxle may cause problems with the nor- mal function of the transaxle. The fluid level in the brake fluid reser-
voir should be checked periodically. The level should be between the "MIN" and "MAX" marks on the side of the reservoir. If the level is at or belowthe "MIN" mark, fluid should be added having carefully cleaned the area sur- rounding the reservoir cap to ensurethat dirt is not allowed to enter the system. It should be noted will de- crease slightly as the friction linings ofthe pads and shoes become worn and that this is a normal condition.

6
OWNER MAINTENANCE
23POWER STEERING FLUID LEVELELECTRIC COOLING FANS
!
YG210A1-E
WARNING:
The cooling fan is controlled by
engine coolant temperature and may sometimes operate even whenthe engine is not running. Do not touch the radiator fan until it is completely stopped.
As the coolant temperature de-
creases the fan will automaticallyshut off. This is a normal condi- tion. Checking Engine Cooling Fan
The engine cooling fan should auto-
matically come on if the engine cool- ant temperature is high. Checking Condenser Cooling Fan
The condenser cooling fan (in front of
the condenser) should come on auto- matically whenever the air conditioneris in operation. YG220A1-E Power Steering Hoses It is suggested that you check the power steering hose connections for fluid leakage at those intervals speci- fied in the vehicle maintenance sched-ule in Section 5. The power steering hoses should be replaced if there are severe surface cracking, pulling, scuff-ing or worn spots. Deterioration of the hoses could cause premature failure.
HGK5011
G230A01GK-EAT The power steering fluid level should
be checked regularly.
To check the power steering fluid level,
be sure the ignition is "OFF", then check to make certain that the power steering fluid level is between the"MAX" and "MIN" level markings on the fluid reservoir. NOTE:
o The power steering pump may be
noisy when the engine is first started in the extreme cold (-20°C/ -4°F). This noise is not abnormal and will stop as the engine warmsup. If the power steering pump continues to be noisy after the engine has warmed up, have itinspected by your Hyundai authorised repairer.
o Do not check whilst the engine is running. Do not start when powersteering fluid reservoir is empty.

10INDEX
2
A Airbag ......................................................................... 1-32
Air Cleaner Filter ......................................................... 6-11
Air Conditioning
Care ......................................................................... 6-18
Operation ....................................................... 1-90, 6-18
Switch ...................................................................... 1-89
Antenna ...................................................................... 1-99
Ashtray ....................................................................... 1-61
Audio Remote Control Switch ..................................... 1-81
B Battery ........................................................................ 6-21
Bonnet Release .......................................................... 1-71
Brake Anti-lock system ...................................................... 2-14
Checking the brakes ................................................ 6-16
Effective braking ...................................................... 2-16
Fluid ......................................................................... 6-16
C
Care of Cassette Tapes ........................................... 1-104
Care of D iscs ........................................................... 1-103
Catalytic Converter ...................................................... 7-3
Child Restraint System ............................................... 1-23
Cigar Lighter ............................................................... 1-61
Climate Control Air Filter .................................. 1-99, 6-18
Clock .......................................................................... 1-60
Clutch Checking fluid .......................................................... 6-17Combination Light
Auto light ................................................................. 1-54
High-beam switch .................................................... 1-53
Headlight flasher ...................................................... 1-54
Lighting switch ......................................................... 1-53
Lane change si gnal .................................................. 1-52
Turn signal operation ............................................... 1-52
Cooling Fans ............................................................... 6-23
Corrosion Protection Cleaning the interior .................................................. 4-5
Protecting your Hyundai from corrosion ................... 4-2
Valeting ..................................................................... 4-3
Cruise Control ............................................................. 1-77
DDaily Operating Checks ............................................... 6-5
Defrosting/Defogging ................................................... 1-88
Door Central door lock ...................................................... 1-7
Door locks ................................................................ 1-6
Locking and unlocking front doors with a key .......... 1-6
Drink Holder ................................................................ 1-62
Driving
Economical driving .................................................. 2-17
Smooth corneri ng ..................................................... 2-18
Winter motoring ....................................................... 2-19
EElectronic Stability Program (ESP) ............................2-15
Emission Control Systems .......................................... 7-2