2004 Hyundai Matrix engine

DO-IT-YOURSELF MAINTENANCE 6-15
WARNING: The cooling fan is controlled by engine cool-
ant temperature and may sometimes oper- ate even when the engine is not running.Use extreme caution when working near theblades of the cooling fan, so that you are notinjured by a rotating fan blade. As the en-gine coolant temperature decreases, the fanwill automatically shut off. This is a normalcondition.
WARNING (Diesel only): Never work on injection system with engine
running or within 30 seconds after shutting off engine. High pressure pump, rail, injec-tors and high pressure pipes are subject tohigh pressure even after the engine stopped.The fuel jet produced by fuel leaks maycause serious injury, if it touch the body.People using pacemakers should not movethan 30cm closer to the ECU or wiring har-ness within the engine room while engine isrunning, since the high currents in the Com-mon Rail system produce considerable mag-netic fields.
The fluid level in the brake fluid reservoir shouldbe checked periodically. The level should bebetween the "MIN" and "MAX" marks on theside of the reservoir. If the level is at or belowthe "MIN" mark, carefully add fluid to bring it upto "MAX". Do not overfill.
G120D01A-AAT
To Check the Fluid Level
G120C02A-AAT
Recommended Brake Fluid Use only hydraulic brake fluid conforming to
DOT 3 or DOT 4 specifications in your braking system. Follow the instructions printed on thecontainer. G120A01A-AAT
CHECKING THE BRAKES
CAUTION: Because brakes are essential to the safe
operation of the car, it is suggested that they be checked and inspected by yourHyundai dealer. The brakes should bechecked and inspected for wear at thoseintervals specified in the vehicle mainte-nance schedule in Section 5.
G120B01A-AAT
Checking the Brake Fluid Level WARNING: Use caution when handling brake fluid. It
can damage your vision if it gets into your eyes. It will also damage your vehicle’s paintif spilled on it and not removed immediately.
HFC5005
G120D02FC
Gasoline engine
Diesel engine

DO-IT-YOURSELF MAINTENANCE
6-16 G130B02A-AAT
To Replace the Fluid
Recommended brake fluid conforming to DOT 3 or DOT 4 specification should be used. Thereservoir cap must be fully tightened to avoidcontamination from foreign matter or moisture. NOTE: Do not allow any other liquids to contami-nate the brake fluid. Seal damage will result. WARNING: Use caution when handling brake fluid. It can damage your vision if you get it in youreyes. It will also damage your vehicle’s paintif spilled on it and not removed immediately. G140A01A-AAT
AIR CONDITIONING CARE Keeping the Condenser Clean
The air conditioning condenser (and engine radiator) should be checked periodically foraccumulation of dirt, dead insects, leaves, etc.These can interfere with maximum cooling effi-ciency. When removing such accumulations,brush or hose them away carefully to avoidbending the cooling fans.
The clutch fluid level in the master cylinder
should be checked when performing other un- der hood services. The system should bechecked for leakage at the same time. Check tomake certain that the clutch fluid level is always
G120D02FC
Diesel engine
G130A01S-AAT
CHECKING THE CLUTCH FLUID To Check the Clutch Fluid
HFC5005
Gasoline engine
between the "MAX" and "MIN" level markings on the fluid reservoir. Fill as required. Fluid lossindicates a leak in the clutch system whichshould be inspected and repaired immediately.Consult your Hyundai dealer.
G120E02A-AAT
Adding Brake Fluid WARNING:
Handle brake fluid carefully. It can damage
your vision if it gets into your eyes. Use only DOT 3 or DOT 4 specification fluid from asealed container. Do not allow the fluid canor reservoir to remain open any longer thanrequired. This will prevent entry of dirt andmoisture which can damage the brake sys-tem and cause improper operation.
To add brake fluid, first wipe away any dirt then
unscrew the fluid reservoir cap. Slowly pour therecommended fluid into the reservoir. Do notoverfill. Carefully replace the cap on the reser-voir and tighten.

DO-IT-YOURSELF MAINTENANCE 6-17
G140B01A-AAT
Checking the Air Conditioning Operation
1. Start the engine and let it run at a fast idle for
several minutes with the air conditioning set at the maximum cold setting.
2. If the air coming out of the in-dash vents is not cold, have the air conditioning systeminspected by your Hyundai dealer.
CAUTION: Running the air conditioning system for extended periods of time with a low refriger-ant level may damage the compressor. G140C01A-AAT
Lubrication To lubricate the compressor and the seals in the system, the air conditioning should be runfor at least 10 minutes each week. This isparticularly important during cool weather whenthe air conditioning system is not otherwise inuse.
G150A01A-GAT
CHECKING STEERING WHEEL FREEPLAY
To check the steering wheel freeplay, stop the
car with the wheels pointed straight ahead and gently move the steering wheel back and forth.Use very light finger pressure and be sensitiveto changes in resistance that mark the limits ofthe freeplay. If the freeplay is greater thanspecified, have it inspected by your Hyundaidealer and adjusted or repaired if necessary.
G150A01FC
G140D01S-GAT
Checking the Compressor Drive Belt
When the air conditioning is being used regular- ly, the compressor drive belt tension should bechecked at least once a month. To check the drive belt tension, press down on the belt halfway between the engine crankshaftand compressor pulleys. Pressing with yourfinger, you should not be able to deflect this beltanymore than 8.0 mm. If you have the instru-ments to check it with a force of 98N (22 lb.),the deflection should be approx. 8.0 mm (0.315in.). If the belt is too loose, have it adjusted byyour Hyundai dealer.
G140D01A
A/C
CRANK PULLEY
TENSION PULLEY
30 mm (1.18 in.)
8mm(0.315 in.)

DO-IT-YOURSELF MAINTENANCE
6-18 G180A01A-GAT
CHECKING BRAKE PEDAL CLEARANCE
You need a helper to check the brake pedal
clearance. With the engine running, have your helper press down on the brake pedal severaltimes and then hold it down with a force of about490N (50 kg, 110 lbs). The brake pedal clear-ance is the distance from the top surface of thebrake pedal to the asphalt sheeting under thefloor mat. If the brake pedal clearance is notwithin the limits specified in the illustration, haveit inspected by your Hyundai dealer and adjust-ed or repaired if necessary.
SSA6180A
45.1 mm (1.78 in.)
G170A01A-GAT
CHECKING BRAKE PEDAL FREE-PLAY
With the engine off, press down on the brake
pedal several times to reduce the vacuum in the brake booster.
Then, using your hand, press down slowly on
the brake pedal until you feel a change inresistance. This is the brake pedal freeplay.The freeplay should be within the limits speci-fied in the illustration. If it is not, have it inspect-ed by your Hyundai dealer and adjusted orrepaired if necessary.
SSA6170A
3 ~ 8 mm (0.12 ~ 0.31 in.)
G160A01A-GAT
CHECKING CLUTCH PEDAL FREE-PLAY
With the engine off, press lightly on the clutch
pedal until you feel a change in resistance. This is the clutch pedal freeplay. The freeplay shouldbe within the limits specified in the illustration. Ifit is not, have it inspected by your Hyundaidealer and adjusted or repaired if necessary.
G160A01E
6 ~ 13 mm (0.24 ~ 0.51 in.)

DO-IT-YOURSELF MAINTENANCE 6-19
G190A01A-GAT
CHECKING DRIVE BELTS (Gasoline Engine)
Drive belts should be checked periodically for
proper tension and adjusted if necessary. At the same time, belts should be examined for cracks,wear, fraying or other evidence of deteriorationand replaced if necessary.
Belt routing should also be checked to be sure
there is no interference between the belts andother parts of the engine. After a belt is re-placed, the new belt should be adjusted againafter two or three weeks to eliminate slackresulting from initial stretching after use.
SSA6190A
Water Pump Pulley
Alternator Pulley
Crankshaft Pulley 5.1~6 mm (0.2~0.24 in.)
G200A01A-AAT
CHECKING AND REPLACING FUSES Replacing a Fusible Link
A fusible link will melt if the electrical circuits
from the battery are ever overloaded, thus pre- venting damage to the entire wiring harness.(This could be caused by a short in the systemdrawing too much current.) If this ever happens,have a Hyundai dealer determine the cause,repair the system and replace the fusible link.The fusible links are located in a fuse box foreasy inspection.
CAUTION: When replacing a fusible link, never use
anything but a new fusible link with the same or lower amperage rating. Never use apiece of wire or a higher-rated fusible link.This could result in serious damage andcreate a fire hazard.
AS60310A
Bad Good
G190B01TB-GAT
CHECKING DRIVE BELTS (Diesel Engine)
At the scheduled maintenance inspection, belts should be examined for cracks, wear, fraying orother evidence of deterioration and replaced ifnecessary. Belt routing should also be checked to be sure there is no interference between the belts andother parts of the engine.G190B01O
Power steeringpump
A/C comp.
Alternator
Alternator

DO-IT-YOURSELF MAINTENANCE 6-21
G210A01A-AAT
CHECKING THE BATTERY
WARNING: Batteries can be dangerous! When working
with batteries, carefully observe the follow- ing precautions to avoid serious injuries.
The fluid in the battery contains a strong solu-
tion of sulfuric acid, which is poisonous andhighly corrosive. Be careful not to spill it onyourself or the car. If you do spill battery fluid onyourself, immediately do the following:
o If battery fluid is on your skin, flush the affected areas with water for at least 15 minutes and then seek medical assistance.
o If battery fluid is in your eyes, rinse out your eyes with water and get medical assistanceas soon as possible. While you are beingdriven to get medical assistance, continueto rinse your eyes by using a sponge or softcloth saturated with water.
D010B01FC
G220A01A-AAT
CHECKING ELECTRIC COOLING FANS WARNING: The cooling fan is controlled by engine cool- ant temperature and may sometimes oper-ate even when the engine is not running.Use extreme caution when working near theblades of the coolant fan, so that you are notinjured by a rotating fan blade. As the en-gine coolant temperature decreases the fanwill automatically shut off. This is a normalcondition. G220B01A-AAT
Checking Engine Cooling Fan The engine coolant fan should come on auto- matically if the engine coolant temperature ishigh. G220C01A-AAT
Checking Condenser Cooling Fan The condenser coolant fan should come on automatically whenever the air conditioning isin operation.
G210B01A-AAT
Checking the Battery Keep the battery clean. Any evidence of corro-
sion around the battery posts or terminals shouldbe removed using a solution of household bak-ing soda and warm water. After the batteryterminals are dry, cover them with a light coat-ing of grease.
o If you swallow battery fluid, drink a large
quantity of water or milk followed by milk ofmagnesia, eat a raw egg or drink vegetableoil. Get medical assistance as soon aspossible.
While batteries are being charged (either by abattery charger or by the vehicle’s alternator),they produce explosive gases. Always observethese warnings to prevent injuries from occur-ring:
o Charge batteries only in a well ventilated area.
o Do not permit flames, sparks or smoking in the area.
o Keep children away from the area.

DO-IT-YOURSELF MAINTENANCE
6-22
G240A01A-AAT
POWER STEERING HOSES
It is suggested that you check the power steer-
ing hose connections for fluid leakage at regular intervals. The power steering hoses should bereplaced if there is severe surface cracking,scuffing or worn spots. Deterioration of thehose could cause premature failure. NOTE: Grinding noise from the power steering
pump may be heard immediately after the engine is started in extremely cold condi-tions (below - 20°C). If the noise stops dur-ing warm up, there is no abnormal functionin the system. It is due to a power steeringfluid characteristic in extremely cold condi-tions.
Recommended Fluid Use PSF-3 type fluid NOTE: Do not start the engine when the power
steering oil reservoir is empty. G300A01B-GAT
REMOVAL OF WATER FROM THE FUEL FILTER (DIESEL ENGINE)
If the fuel filter warning light illuminates during driving, it indicates that water has accumulatedin the fuel filter. If this occurs, remove the wateras described below.
G300A01FC
G300B01FC
G230A03A-GAT
POWER STEERING FLUID LEVEL
HFC5004
Gasoline engine
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 cer- tain that the power steering fluid level is be-tween the "MAX" and "MIN" level markings onthe fluid reservoir.
G230A02FC
Diesel engine

DO-IT-YOURSELF MAINTENANCE 6-23
G260A03A-GAT
REPLACING HEADLIGHT BULBS Before attempting to replace a headlight bulb,
be sure the switch is turned to the "OFF" position.
The next paragraph shows how to reach the
headlight bulbs so they may be changed. Besure to replace the burned-out bulb with one ofthe same number and wattage rating.
CAUTION: Keep the lamps out of contact with petro-
leum products, such as oil, gasoline, etc.
1. Loosen the drain plug at the bottom of the
fuel filter.
2. Tighten the drain plug when water no longer comes out.
3. Check to be sure that the warning lamp illuminates when the ignition key is turned to "ON", and that it goes off when the engine isstarted. If in doubt, consult your nearest authorized HYUNDAI dealer.
WARNING: Be sure to carefully wipe away any water
drained out in this manner, because the fuelmixed in the water might be ignited andresult in a fire. 5. Push the bulb spring for removing the head-
light bulb.
6. Remove the protective cap from the replace- ment bulb and install the new bulb by match-ing the plastic base with the headlight hole.Install the dust cover after retightening thebulb spring and reconnect the power cord.
7. Use the protective cap and carton to dis- pose of the old bulb.
8. Check for proper headlight aim.
WARNING The halogen bulb contains gas under pres-
sure and if impacted could shatter, resulting in flying fragments. Always wear eye pro-tection when servicing the bulb. Protect thebulb against abrasions or scratches andagainst liquids when lighted. Turn on thebulb only when installed in a headlight. Re-place the headlight if damaged or cracked.Keep the bulb out of the reach of childrenand dispose of the used bulb with care.
G270A02FC
G270A02A-GAT
HEADLIGHT BULB Replacement instructions:
G270A01FC
1. Allow the bulb to cool. Wear eye protection.
2. Always grasp the bulb by its plastic base, avoid touching the glass.
3. Disconnect the power cord from the bulb base in the back of the headlight.
4. Remove the dust cover.