http://forum.e46fanatics.com/showthread.php?t=451510
I was informed by a BMW dealer there isn't a battery to replace and you have to order a new remote and then have it programmed by the dealer.
Cut open the remote with xacto knife , unsolder and replace the battery.
Take the remote to any DMW dealer. They have to match the VIN mumber to the remote code. There may be a small fee involved.
The standard features on a new BMW 745 include dual exhaust, auto-dimming door mirrors, heated door mirrors, memory seats, and remote keyless entry system.
To replace the keyless remote battery on a BMW X3, first, locate the small slot or indentation on the side of the key fob. Use a flathead screwdriver or a coin to gently pry open the key fob casing. Once open, remove the old battery, noting its orientation, and replace it with a new CR2032 battery. Finally, snap the fob casing back together and test the remote to ensure it’s functioning properly.
small flat head screw driver pops off the back cover and there is a nickel size battery that needs to be replaced
If the lock and keyless remote for your BMW X5 are broken, you can try using the physical key hidden inside the key fob to manually unlock the door. Look for a small sliding button or latch on the key fob to release the key. If that doesn't work, you may need to access the vehicle through the trunk or use a slim jim tool to unlock the door, but this can be risky and may damage the vehicle. If all else fails, contacting a locksmith or your local BMW dealership for assistance is advisable.
To reinitialize a keyless remote battery on a BMW X5, first, replace the old battery with a new one, ensuring the positive side faces the correct direction. After replacing the battery, sit in the vehicle with the new key, close all doors, and press the start/stop button without pressing the brake pedal. This should reinitialize the key. If it doesn't work, you may need to consult the owner's manual or a BMW dealer for further assistance.
The 2005 BMW X3 has 24 valves.
The 2005 BMW M3 has 24 valves.
The 2005 BMW Z4 has 24 valves.
The 2005 BMW X5 has 24 valves.