BMW 320i Sedan 3 Series 2003 Owner's Manual
![BMW 320i Sedan 3 Series 2003 manual cover](/images/34ebd6c3a2ba074feb5c7a3a/thumbs/thumb175x175.webp)
The recommended oil type for the BMW 320i Sedan 3 Series 2003 is 5W-30 full synthetic oil.
To reset the service indicator light, turn the ignition to position 1, press and hold the odometer reset button, and wait for the service light to appear. Release the button, then press and hold it again until the reset is confirmed.
The correct tire pressure for the BMW 320i 2003 is typically 32 psi for the front tires and 36 psi for the rear tires. Always check the owner’s manual for specific recommendations.
The air filter should be replaced every 15,000 to 30,000 miles, or as needed based on driving conditions.
Common causes for the check engine light in a BMW 320i 2003 include a loose gas cap, faulty oxygen sensors, or issues with the catalytic converter. A diagnostic scan is recommended to identify the specific issue.
To improve fuel efficiency, ensure regular maintenance such as oil changes, maintain proper tire pressure, avoid excessive idling, and drive at steady speeds.
The BMW 320i 2003 requires BMW-approved coolant with a mixture of 50% coolant and 50% distilled water.
To replace a headlight bulb, open the hood, locate the back of the headlight assembly, remove the cover, disconnect the wiring, and replace the old bulb with a new one. Ensure the bulb is securely fastened before replacing the cover.
Common signs of a failing alternator include dimming headlights, electrical issues, a dead battery, and the battery warning light being illuminated on the dashboard.
The BMW 320i 2003 does not have a dipstick for the transmission fluid. Checking the fluid level typically requires lifting the vehicle and accessing the fill plug on the transmission. It is recommended to have this checked by a professional mechanic.