Ford Focus 2004 Owner's Manual

It is recommended to change the oil every 3,000 to 5,000 miles, depending on your driving conditions and the type of oil used. Check your owner's manual for specific guidance.
Use Mercon V automatic transmission fluid for the 2004 Ford Focus. Always check your owner’s manual for confirmation.
Common causes for stalling include a dirty throttle body, a faulty idle air control valve, or vacuum leaks. Cleaning or replacing these components can often resolve the issue.
To reset the check engine light, you can disconnect the battery for about 15 minutes or use an OBD-II scanner to clear the codes. Ensure the issue has been resolved to prevent the light from coming back on.
The recommended tire pressure for a 2004 Ford Focus is typically 32 PSI for both front and rear tires. Check the sticker on the driver’s side door jamb for specific information.
To improve fuel efficiency, ensure regular maintenance such as replacing air filters, maintaining proper tire pressure, and using the recommended grade of motor oil. Avoid excessive idling and aggressive driving.
A squealing noise during startup is often caused by a worn or loose serpentine belt. Inspect the belt for wear and tension, and replace it if necessary.
Symptoms of a failing alternator include dimming headlights, electrical issues, a dead battery, or a battery warning light on the dashboard. Testing the alternator output can confirm the issue.
To change a flat tire, first ensure the car is on a flat surface and engage the parking brake. Loosen the lug nuts, jack up the car, remove the lug nuts and the wheel, then replace with the spare tire. Tighten the lug nuts in a crisscross pattern.
Overheating can be caused by a low coolant level, a faulty thermostat, a leaking radiator, or a failing water pump. Check these components to diagnose the issue.