check engine light Hyundai Matrix 2004 Owner's Manual

FEATURES OF YOUR HYUNDAI 1- 33
B260B01S-GAT
SRS (Airbag) Service Reminder Indicator (SRI)(If Installed)
The SRS service reminder indicator (SRI) comes on and flashes for about 6 seconds after theignition key is turned to the "ON" position or afterthe engine is started, after which it will go out. This light also comes on when the SRS is not working properly. If the SRI does not come on,or continuously remains on after flashing forabout 6 seconds when you turned the ignitionkey to the "ON" position or started the engine,or if it comes on while driving, have the SRSinspected by an authorized Hyundai Dealer. B260C01A-AAT
O/D OFF Indicator
(If Installed)
When the overdrive switch is turned on, the overdrive off indicator will go out. This amberindicator will be illuminated when the overdriveswitch is turned off.
B260P02Y-GAT
ABS Service Reminder
Indicator (SRI) (If Installed)
When the key is turned to the "ON" position, the Anti-Lock Brake System will come on and thengo off in a few seconds. If the ABS SRI remainson, comes on while driving, or does not comeon when the key is turned to the "ON" position,this indicates that there may be a problem withthe ABS.If this occurs, have your vehicle checked byyour Hyundai dealer as soon as possible. Thenormal braking system will still be operational,but without the assistance of the anti-lock brakesystem.
B260F01A-AAT High Beam Indicator Light
The high beam indicator light comes on when- ever the headlights are switched to the highbeam or flash position.
B260D01A-AAT Turn Signal Indicator Lights
The blinking green arrows on the instrument panel show the direction indicated by the turnsignals. If the arrow comes on but does notblink, blinks more rapidly than normal, or doesnot illuminate at all, a malfunction in the turnsignal system is indicated. Your dealer shouldbe consulted for repairs. B260G01A-AAT
Low Oil Pressure Warning Light
CAUTION: If the oil pressure warning light stays on while the engine is running, serious enginedamage may result. The oil pressure warn- ing light comes on whenever there is insuf- ficient oil pressure. In normal operation, itshould come on when the ignition switch isturned on, then go out when the engine isstarted. If the oil pressure warning lightstays on while the engine is running, theremay be a serious malfunction.If this happens, stop the car as soon as it issafe to do so, turn off the engine and checkthe oil level. If the oil level is low, fill theengine oil to the proper level and start theengine again. If the light stays on with theengine running, turn the engine off immedi-ately. In any instance where the oil lightstays on when the engine is running, theengine should be checked by an authorizedHyundai dealer before the car is driven again.
CAUTION: If both ABS SRI and Parking Brake/Brakefluid level warning lights remain "ON" orcome on while driving, there may be a prob-lem with E.B.D (Electronic Brake Force Dis-tribution).If this occurs, avoid sudden stops and haveyour vehicle checked by your Hyundai dealeras soon as possible.

FEATURES OF YOUR HYUNDAI
1- 34 B260J01S-GAT
Charging System Warning Light
The charging system warning light should come on when the ignition is turned on, then go outwhen the engine is running. If the light stays onwhile the engine is running, there is a malfunc-tion in the electrical charging system. If the lightcomes on while you are driving, stop, turn offthe engine and check under the hood. First,make certain the generator drive belt is inplace. If it is, check the tension of the belt.And then, have the system checked by yourHyundai dealer.
CAUTION: If the drive belt (generator belt) is loosen,broken, or mission while the vehicle is driv-ing, there may be a serious malfunction,
engine could overheat because this beltalso drives the water pump. B260L01A-GAT Door Ajar Warning Light
The door ajar warning light warns you that a door is not completely closed.B260H03A-AAT Parking Brake/Low Brake Fluid Level Warning Light
WARNING: If you suspect brake trouble, have your brakes checked by a Hyundai dealer assoon as possible. Driving your car with aproblem in either the brake electrical sys-tem or brake hydraulic system is danger-ous, and could result in a serious injury ordeath. Warning Light Operation The parking brake/brake fluid level warning light should come on when the parking brake isapplied and the ignition switch is turned to "ON"or "START". After the engine is started, the lightshould go out when the parking brake is re-leased.If the parking brake is not applied, the warninglight should come on when the ignition switch isturned to "ON" or "START", then go out whenthe engine starts. If the light comes on at anyother time, you should slow the vehicle andbring it to a complete stop in a safe location offthe roadway.The brake warning light indicates that the brakefluid level in the brake master cylinder is lowand hydraulic brake fluid conforming to DOT 3or DOT 4 specifications should be added. Afteradding fluid, if no other trouble is found, the carshould be immediately and carefully driven to a Hyundai dealer for inspection. If further troubleis experienced, the vehicle should not be drivenat all but taken to a dealer by a professionaltowing service or some other safe method.Your Hyundai is equipped with dual-diagonalbraking systems. This means you still havebraking on two wheels even if one of the dualsystems should fail. With only one of the dualsystems working, more than normal pedal traveland greater pedal pressure are required to stopthe car. Also, the car will not stop in as short adistance with only half of the brake systemworking. If the brakes fail while you are driving,shift to a lower gear for additional engine brak-ing and stop the car as soon as it is safe to doso.
B260K01B-GAT
Tail Gate Open Warning Light
This light remains on unless the tail gate is completely closed.
B260M01A-AAT Low Fuel Level Warning Light
The low fuel level warning light comes on whenthe fuel tank is approaching empty. When itcomes on, you should add fuel as soon aspossible. Driving with the fuel level warninglight on or with the fuel level below "E" cancause the engine to misfire and damage thecatalytic converter.

FEATURES OF YOUR HYUNDAI 1- 35
B260N02FC-GAT
Malfunction Indicator Light (If Installed)
This light illuminates when there is a malfunc- tion of an exhaust gas related component, andthe system is not functioning properly so thatthe exhaust gas regulation values are not sat-isfied. This light will illuminate when the ignitionkey is tuned to the "ON" position, and will go outafter the engine start. If it illuminates whiledriving, or does not illuminate when the ignitionkey is turned to the "ON" position, take your carto your nearest authorized Hyundai dealer andhave the system checked.
B260C02E-GAT Traction Control Indicator Light (If Installed)
The traction control indicator changes opera- tion according to the ignition switch positionand whether or not the system is in operation.It will also illuminate when the ignition key isturned to the "ON" position, and then go off in afew seconds. If the TCS indicator stays on,take your car to your authorized Hyundai dealerand have the system checked. See section 2for more information about the TCS system.
B270A01A-AAT BRAKE PAD WEAR WARNING SOUND The front disc brake pads have wear indicators that should make a high-pitched squealing orscraping noise when new pads are needed.The sound may come and go or be heard all the
time when the vehicle is moving. It may also beheard when the brake pedal is pushed downfirmly. Excessive rotor damage will result if theworn pads are not replaced. See your Hyundaidealer immediately.
B260S01B-GAT
Diesel Pre-heat Indicator Light (Diesel Engine)
The indicator light illuminates amber when the ignition switch is placed at the "ON" position.The engine can be started after the pre-heatindicator light goes off. The illuminating timevaries with the water temperature, air tem-perature and battery condition. NOTE: If the engine were not started 10 seconds after the preheating is completed, turn theignition key once more to the "LOCK"position, and then to the "ON" position, inorder to preheat again.
B265A01FC-GAT Fuel Filter Warning Light (Diesel Engine)
This light illuminates when the engine has started and go off after a few seconds. If itlights up while the engine is running, it indi-cates that water has accumulated inside thefuel filter. If this happens, remove the waterfrom the fuel filter. (Refer to "6-22 page")
B270B02O-GAT PARKING START WARNING SOUND (If Installed) If the vehicle is driven at 10km/h(6mph) for more than 2~3 seconds, the warning chime willsound continuously when the parking brakeengaged.
B900A01A-GAT LIGHIS ON WARNING SOUND (If Installed) The warning chime sounds when the tail lights are on and the driver side door is open. Thisprevents the battery from discharging by warn-ing you when the car is left with the tail lights on.The chime sounds until the tail lights are turnedoff.

FEATURES OF YOUR HYUNDAI
1- 36 Your Hyundai's speedometer is calibrated in kilometers per hour or miles per hour. B330A01A-AAT TACHOMETER
HFC2043
HFC2101
B290A02A-AAT ENGINE COOLANT TEMPERATURE GAUGE
B300A01A-GAT SPEEDOMETER
HFC2044
WARNING: Never remove the radiator cap when theengine is hot. The engine coolant is underpressure and could erupt and cause severeburns. Wait until the engine is cool beforeremoving the radiator cap. The needle on the engine coolant temperature gauge should stay in the normal range. If itmoves across the dial to "H" (Hot), pull over andstop as soon as possible and turn off theengine. Then open the hood and after theengine has cooled, check the coolant level andthe water pump drive belt. If you suspect cool-ing system trouble, have your cooling systemchecked by a Hyundai dealer as soon as pos-sible.
The needle on the gauge indicates the approxi-mate fuel level in the fuel tank.
B950A01E-GAT REAR FOG AUDIBLE WARNING SOUND (If Installed) The rear fog audible warning chime sounds when the rear fog lights are on and the door indriver side is open. B280A01A-AAT FUEL GAUGE
HFC2045Gasoline engine

FEATURES OF YOUR HYUNDAI 1- 39
3. DRIVE TIME
Drive time symbol
Drive timeHFC2054
o This mode indicates the drive time travelled since the last drive time reset.
o Pressing the reset switch for more than 1 second, when the drive time is being dis- played, clears the drive time to zero. B340B01A-AAT Lane Change Signal
B340B01FC
To indicate a lane change, move the lever up or down to a point where it begins flashing.The lever will automatically return to the centerposition when released.
B340A01A-AAT COMBINATION TURN SIGNAL, HEADLIGHT AND HIGH-BEAMSWITCH Turn Signal Operation Pulling down on the lever causes the turn signals on the left side of the car to blink.Pushing upwards on the lever causes the turnsignals on the right side of the car to blink. Asthe turn is completed, the lever will automati-cally return to the center position and turn offthe turn signals at the same time. If either turnsignal indicator light blinks more rapidly thanusual, goes on but does not blink, or does notgo on at all, there is a malfunction in the system.Check for a burned-out fuse or bulb or see yourHyundai dealer.
B340C01FC
B340C02FC-GAT Headlight Switch
To operate the headlights, turn the barrel on the end of the multi-function switch. The first posi-tion turns on the parking lights, sidelights, taillights and instrument panel lights. The secondposition turns on the headlights. NOTE: The ignition must be in the "ON" position toturn on the headlights. Parking light auto cut (If installed)
If you do not turn the parking lights "OFF" after driving, the parking lights will automati-cally shut "OFF" when the driver's door isopened. To turn them "ON" again you must simply turn the ignition key to the "ON" position.
B340F01A-GAT Daytime Running Lights (If Installed) Your Hyundai is equipped with daytime running lights. The daytime running lights are used toimprove visibility for oncoming traffic. Your
vehicle daytime running lights are designed toremain on continuously when the engine isoperating even though the headlight switch is inthe "OFF" position. However, the daytime run-
ning lights will be off while the parking brake isapplied.

DRIVING YOUR HYUNDAI
2- 2
C040A01A-AAT KEY POSITIONSWARNING: The engine should not be turned off or the key removed from the ignition key cylinder while the vehicle is in motion. The steering wheel is locked by removing the key.
C040A01E
LOCK
ACC
ON
START
o "START" The engine is started in this position. It will crank until you release the key. NOTE: Do not hold the key in the "START" position for more than 15 seconds.
o "ON" When the key is in the "ON position, the ignition is on and all accessories may be turned on. If the engine is not running, the key should not be left in the "ON" position. This will discharge the battery and may also damage the ignition sys- tem.
o "ACC" With the key in the "ACC" position, the some electrical accessories (radio, etc.) may be oper- ated.
C020A01O-GAT BEFORE STARTING THE ENGINE Before you start the engine, you should always:
1. Look around the vehicle to be sure there are
no flat tires, puddles of oil, water or other indications of possible trouble.
2. After entering the car, check to be sure the parking brake is engaged.
3. Check that all windows, and lights are clean.
4. Check that the interior and exterior mirrors are clean and in position.
5. Check your seat, seatback and headrest to
be sure they are in their proper positions.
6. Lock all the doors.
7. Fasten your seat belt and be sure that all other occupants have fastened theirs.
8. Turn off all lights and accessories that are not needed.
9. When you turn the ignition switch to “ON”, check that all appropriate warning lights areoperating and that you have sufficient fuel.
10. Check the operation of warning lights and all
bulbs when key is in the “ON” position.
WARNING: (DIESEL ENGINE) To ensure that sufficient vacuum exists with- in the brake system during cold weather start- up conditions, it is necessary to run the engine at idle for several seconds after start- ing the engine.
C030A01A-GAT COMBINATION IGNITION SWITCH To Start the Engine Before starting the engine:
o If your Hyundai is equipped with a manual transaxle, place the shift lever in neutral and depress the clutch pedal fully.
o If your Hyundai has an automatic transaxle,
place the shift lever in "P" (park).
o To start the engine, insert the ignition key and
turn it to the "START" position. Release it as soon as the engine starts. Do not hold the key in the "START" position for more than 15 seconds.
NOTE: For safety, the engine will not start if the shift lever is not in "P" or "N" Position (automatic transaxle).

DRIVING YOUR HYUNDAI
2- 8 o Do not hold the vehicle on the upgrade with
the accelerator pedal. This can cause the transmission to overheat. Always use the brake pedal or parking brake.
C120A02A-AAT ANTI-LOCK BRAKE SYSTEM (If Installed) The Anti-Lock Brake System (ABS) is designed to prevent wheel lock-up during sudden braking or on hazardous road surfaces. The ABS control module monitors the wheel speed and controls the pressure applied to each brake. Thus, in emergency situations or on slick roads, ABS will increase vehicle control during braking. NOTE: During ABS operation, a slight pulsation may be felt in the brake pedal when the brakes are applied. Also, a noise may be heard in the engine compartment while braking. These conditions are normal and indicate that the anti-lock brake system is functioning proper- ly. WARNING: ABS will not prevent accidents due to im- proper or dangerous driving maneuvers. Even though vehicle control is improved during emergency braking, always maintain a safe distance between you and objects ahead. Vehicle speeds should always be reduced during extreme road conditions. The braking distance for cars equipped with
also increases the wear of the brake compo-nents.
o If a tire goes flat while you are driving, apply
the brakes gently and keep the car pointed straight ahead while you slow down. When
you are moving slowly enough for it to be safe to do so, pull off the road and stop in a safe place.
o If your car is equipped with an automatic
transaxle, don't let your car creep forward. To avoid creeping forward, keep your foot on the brake pedal when the car is stopped.
o Use caution when parking on a hill. Engage
the parking brake and place the gear selector lever in "P" (automatic transaxle) or in first or
reverse gear (manual transaxle). If your car is
facing downhill, turn the front wheels into the curb to help keep the car from rolling. If your car is facing uphill, turn the front wheels away from the curb to help keep the car from rolling. If there is no curb or if it is required by other conditions to keep the car from rolling, block the wheels.
o Under some conditions your parking brake can freeze in the engaged position. This is most likely to happen when there is an accu- mulation of snow or ice around or near the rear brakes or if the brakes are wet. If there is a risk that the parking brake may freeze, apply it only temporarily while you put the gear selector lever in "P" (automatic) or in first or reverse gear (manual transaxle) and block the rear wheels so the car cannot roll. Then release the parking brake.
C130A01A-AAT GOOD BRAKING PRACTICES WARNING: Nothing should be carried on top of the shelf panel behind the rear seat. If there were an accident or a sudden stop, such objects could move forward and cause damage to the ve- hicle or injure the occupants.
o After being parked, check to be sure the
parking brake is not engaged and that the parking brake indicator light is out before driving away.
o Driving through water may get the brakes
wet. They can also get wet when the car is washed. Wet brakes can be dangerous! Your
car will not stop as quickly if the brakes are wet. Wet brakes may cause the car to pull to one side. To dry the brakes, apply the brakes lightly until the braking action returns to nor-
mal, taking care to keep the car under control at all times. If the braking action does not return to normal, stop as soon as it is safe to do so and call your Hyundai dealer for assis- tance.
o Don't coast down hills with the car out of gear.
This is extremely hazardous. Keep the car in gear at all times, use the brakes to slow down, then shift to a lower gear so that engine braking will help you maintain a safe speed.
o Don't "ride" the brake pedal. Resting your foot on the brake pedal while driving can be dan- gerous because it can result in the brakes overheating and losing their effectiveness. It

DRIVING YOUR HYUNDAI 2- 9
an anti-lock braking system may be longer than for those without it in the following road conditions.
o Driving on rough, gravel or snow-covered
roads.
o Driving with tire chains installed.
o Driving on roads where the road surface is pitted or has different surface height.
During these conditions, the vehicle shouldbe driven at reduced speeds. The safety fea- tures of an ABS equipped vehicle should not be tested by high speed driving or cornering. This could endanger the safety of yourself or others. C300A01O-GAT BRAKE TRACTION CONTROL SYSTEM (BTCS) (If Installed) On slippery road surfaces, the traction control system (TCS) limits the drive wheels from spin- ning excessively, thus helping the car to acceler- ate. It also provides sufficient driving force and steering performance as the car turns at acceler- ated speeds. SLIP Control Limits the drive wheels from spinning exces- sively during starting or while making accelerat- ed turns on slippery roads to avoid losing the driving force of the front wheels. C300B01O-GAT TCS ON ModeIn the TCS ON mode, the indicator in the instru- ment cluster will not be illuminated. NOTE:
1) Turn off the engine. Then restart the en-
gine, and the TCS mode will automaticallyturn "ON".
2) When the traction control is operating
properly, you can feel a slight pulsation in the vehicle. This is only the effect of brake control and indicates nothing unusual. C300D02O-GAT Indicator and Warning The indicator should illuminate when the ignition key is turned to "ON" or "START", but should go out after three seconds. If the indicator does not illuminate, have it checked by an authorized Hyundai dealer. Should there be any unusual conditions in the device, TCS illuminates as a warning. If TCS illuminates, pull your car to a safe place and stop the engine. Then, start the engine again to check if the TCS indicator goes out. If the indicator remains lit even after the engine has been started, have your car checked by an authorized Hyundai dealer. NOTE: When TCS illuminates, traction control is automatically deactivated for safety.
Driving hints TCS does not actively apply brakes. Be sure to decelerate the car sufficiently before entering curves. CAUTION: When the TCS indicator blinks, SLIP control has been activated. It also means that the road is slippery or your car is accelerating excessively. In this situation, release foot pressure from the accelerator pedal and main- tain moderate speed. WARNING: Traction control is only a driving aid; all normal precautions for driving in inclement weather and on slippery driving surfaces should be observed.
3) When the engine starts, a click is heard
from the engine compartment; however, this is only the sound of traction control being checked.
4) When moving out of the mud or fresh
snow, pressing the accelerator pedal may not cause the engine speed to increase.

DRIVING YOUR HYUNDAI
2- 10 C150A01A-AAT
SMOOTH CORNERING
Avoid braking or gear changing in corners, espe- cially when roads are wet. Ideally, corners should always be taken under gentle acceleration. If you follow these suggestions, tire wear will be held to a minimum.
curbs or driving too fast over irregular surfac- es. Poor alignment causes faster tire wear and may also result in other problems as well as greater fuel consumption.
o Keep your car in good condition. For better
fuel economy and reduced maintenance costs, maintain your car in accordance with the maintenance schedule in Section 5. If you drive your car in severe conditions, more frequent maintenance is required (see Sec- tion 5 for details).
o Keep your car clean. For maximum service, your Hyundai should be kept clean and free of corrosive materials. It is especially important that mud, dirt, ice, etc. not be allowed to accumulate on the underside of the car. This extra weight can result in increased fuel con- sumption and also contribute to corrosion.
o Travel lightly. Don't carry unnecessary weight
in your car. Weight reduces fuel economy.
o Don't let the engine idle longer than neces-
sary. If you are waiting (and not in traffic), turn off your engine and restart only when you're ready to go.
o Remember, your Hyundai does not require
extended warm-up. As soon as the engine is running smoothly, you can drive away. In very cold weather, however, give your engine a slightly longer warm-up period.
o Don't "lug" or "over-rev" the engine. Lugging is driving too slowly in too high a gear result- ing in the engine bucking. If this happens, shift to a lower gear. Over-revving is racing the engine beyond its safe limit. This can be C160A01A-AAT WINTER DRIVING The more severe weather conditions of winter result in greater wear and other problems. To minimize the problems of winter driving, you should follow these suggestions: C160B01A-GAT Snowy or Icy ConditionsTo drive your vehicle in deep snow, it may be necessary to use snow tires or to install tire chains on your tires. If snow tires are needed, it is necessary to select tires equivalent in size and type to the original equipment tires. Failure to do so may adversely affect the safety and handling of your car. Speeding, rapid acceleration, sud- den brake applications, and sharp turns are potentially very hazardous practices. During
C140A01A-GAT DRIVING FOR ECONOMY You can save fuel and get more kilometers from your car if you follow these suggestions:
o Drive smoothly. Accelerate at a moderate
rate. Don't make "jack-rabbit" starts or full- throttle shifts and maintain a steady cruising speed. Don't race between stoplights. Try to adjust your speed to that of the other traffic so you don't have to change speeds unneces- sarily. Avoid heavy traffic whenever possible. Always maintain a safe distance from other vehicles so you can avoid unnecessary brak- ing. This also reduces brake wear.
o Drive at a moderate speed. The faster you drive, the more fuel your car uses. Driving at a moderate speed, especially on the high- way, is one of the most effective ways to reduce fuel consumption.
o Don't "ride" the brake or clutch pedal. This
can increase fuel consumption and also in- crease wear on these components. In addi- tion, driving with your foot resting on the brake pedal may cause the brakes to overheat, which reduces their effectiveness and may lead to more serious consequences.
o Take care of your tires. Keep them inflated to the recommended pressure. Incorrect infla- tion, either too much or too little, results in unnecessary tire wear. Check the tire pres- sures at least once a month.
o Be sure that the wheels are aligned correctly.
Improper alignment can result from hitting avoided by shifting at the recommendedspeeds.
o Use your air conditioning sparingly. The air
conditioning system is operated by engine power so your fuel economy is reduced when you use it.

DRIVING YOUR HYUNDAI
2- 12 The hitch should be bolted securely to the car and installed by a qualified technician. DO NOT USE A HITCH DESIGNED FOR TEMPORARY INSTALLATION AND NEVER USE ONE THAT ATTACHES ONLY TO THE BUMPER. C190C03S-GAT Trailer Brakes If your trailer is equipped with a braking system, make sure it conforms to federal and/or local regulations and that it is properly installed and operating correctly. NOTE: If you tow a trailer or vehicle, your car will require more frequent maintenance due to the additional load. See "Maintenance Under Severe Usage Conditions" on page 5-5. CAUTION:
o Never connect a trailer brake system di-
rectly to the vehicle brake system.
o When towing a trailer on steep grades (in excess of 12%) pay close attention to theengine coolant temperature gauge to en- sure the engine does not overheat. If the needle of the coolant temperature gauge moves across the dial towards "H" (HOT), pull over and stop as soon as it is safe to do so, and allow the engine to idle until it cools down. You may proceed once the engine has cooled sufficiently.
C180A01A-AAT USE OF LIGHTS Check your lights regularly for correct operation and always keep them clean. When driving dur- ing the day in conditions of poor visibility, it is helpful to drive with headlights on low beam. This enables you to be seen as well as to see. C190A02A-GAT TRAILER OR VEHICLE TOWINGIf you are considering towing with your car, you should first check with your Province Depart- ment of Motor Vehicles to determine their legal requirements. Since laws vary from province to province, the requirements for towing trailers, cars, other types of vehicles, or apparatus may differ. Ask your Hyundai dealer for further details before towing. CAUTION Do not do any towing with your car during its first 2,000 km (1,200 miles) in order to allow the engine to properly break in. Failure to heed this caution may result in serious en- gine or transaxle damage. C190B01S-AAT Trailer Hitches Select the proper hitch and ball combination, making sure that it’s location is compatible with that of the trailer or vehicle being towed. Use a quality non-equalizing hitch which distrib- utes the tongue load uniformly throughout the chassis.
C160K01A-AAT Carry Emergency Equipment Depending on the severity of the weather where you drive your car, you should carry appropriate emergency equipment. Some of the items you may want to carry include tire chains, tow straps or chains, flashlight, emergency flares, sand, a shovel, jumper cables, a window scraper, gloves, ground cloth, coveralls, a blanket, etc. C170A01A-AAT HIGHER SPEED MOTORING Pre-Trip Inspections 1. Tires: Adjust the tire inflation pressures to specifica- tion. Low tire inflation pressures will result in overheating and possible failure of the tires. Avoid using worn or damaged tires which may result in reduced traction or tire failure. NOTE: Never exceed the maximum tire inflation pres- sure shown on the tires. 2. Fuel, engine coolant and engine oil: High speed travel consumes 1.5 times more fuel than urban motoring. Do not forget to check both engine coolant and engine oil. 3. Drive belt: A loose or damaged drive belt may result in overheating of the engine.