BMW 645Ci Convertible 6 Series 2004 Owner's Manual

To reset the service light, turn the ignition to position 1, hold the trip odometer button until the service light appears, release it, then press and hold the button again until 'Reset' appears and confirm by pressing the button once more.
The recommended tire pressure for the BMW 645Ci Convertible 2004 is typically 32 PSI for the front tires and 35 PSI for the rear tires. Always refer to the sticker on the driver's side door jamb for the most accurate information.
If the convertible top is not closing properly, check for any obstructions or debris in the mechanism, ensure the trunk partition is in place, and verify that all fuses related to the convertible top are intact. If the problem persists, a diagnostic check by a professional may be necessary.
Use synthetic 5W-30 motor oil that meets BMW Longlife-01 specifications for the best performance in the BMW 645Ci Convertible 2004.
Activate Bluetooth on your phone, navigate to the iDrive menu in your BMW, select 'Communication', then 'Bluetooth', and follow the prompts to pair your device with the car's system.
If the engine overheats, pull over safely, turn off the engine, and wait for it to cool down. Check coolant levels and look for leaks. If necessary, call for roadside assistance or have the vehicle towed to the nearest service center.
It is recommended to change the transmission fluid every 60,000 to 100,000 miles, but refer to your owner's manual for specific intervals based on your driving conditions.
The check engine light can appear due to various reasons such as a loose gas cap, faulty oxygen sensor, or issues with the catalytic converter. Use an OBD-II scanner to diagnose the specific cause.
To replace the battery in the key fob, remove the key blade, use a small screwdriver to open the key fob casing, replace the old battery with a new CR2032 battery, and reassemble the fob.
To check the engine oil level, ensure the car is on a level surface, turn off the engine, wait for it to cool, pull out the dipstick, wipe it clean, reinsert it fully, and then pull it out again to check the level.