BMW 320i Sedan 3 Series 2004 Owner's Manual
![BMW 320i Sedan 3 Series 2004 manual cover](/images/2cc9719526ce975d9d41e5fa/thumbs/thumb175x175.webp)
To reset the service light, insert the key into the ignition, turn it to position 1, then press and hold the trip reset button until the service light begins to flash. Release the button, then press and hold it again until the display shows a reset message.
The recommended engine oil for the 2004 BMW 320i is BMW High Performance Synthetic Oil 5W-30 or any other oil that meets BMW Longlife-01 specifications.
Start by checking the AC fuse and relay, ensure the refrigerant levels are adequate, inspect the AC compressor for any damage, and verify that the AC button and climate control settings are correct.
The recommended tire pressure for the 2004 BMW 320i is typically 32 psi for the front tires and 38 psi for the rear tires, but it's best to refer to the sticker on the driver’s door jamb for precise information.
To replace the brake pads, safely lift the car and remove the wheels, release the caliper by removing the mounting bolts, take out the old pads, compress the caliper piston, and install the new pads before reattaching the caliper and wheels.
It's recommended to change the transmission fluid every 50,000 to 60,000 miles, although BMW often claims a 'lifetime' fluid which can be interpreted differently; regular checks and changes can improve longevity.
Common causes include a dirty or faulty idle control valve, vacuum leaks, clogged fuel injectors, or issues with spark plugs and ignition coils.
To program a new key fob, enter the car and close all doors, insert the key and turn to position 1, remove the key, and then hold the unlock button while pressing the lock button three times. Release the unlock button and the locks should cycle to indicate successful programming.
If the Check Engine Light comes on, check for loose gas cap, any noticeable engine performance issues, and use an OBD-II scanner to read the diagnostic trouble codes (DTCs) for further troubleshooting.
To improve fuel efficiency, regularly maintain your vehicle by changing the air filter, ensuring proper tire pressure, using high-quality fuel, and driving smoothly without abrupt acceleration or braking.