Replacement Key - 2003 325i

[BasilRathbone]

My key fails to start my 2003 325i. The FOB still works at normal distances. I assume an internal chip failure since my wife's key still starts the car.

What are the key replacement option(s) that won't take the numbers off my credit card?

[easymoney]

PM RocketSurgeon (AKA Dillon) better if you can email him for faster reponse. He's a key guru and fraction of the price from the stealers. I have used him couple of times.

[MarcoZandrini]

The key has 2 separate electronic systems. One is for the remote lock/unlock system. That system is powered by the battery in the key. The other system is the anti-theft system. The key is given a random code by the car’s anti-theft system. That code is used for the next time that key starts the car. The code has to match what the anti-theft system thinks the key is supposed to have. If the code in the key and the code in the anti-theft system matchbthe car can start. Otherwise the car can’t be started.

The key and the anti-theft system can become unsynchronized. Go to E46Fanatics and search for the key syncing procedure. If that doesn’t work then you’ll need to get a key from a dealer. You’ll need to show an ID and the registration to the parts person. Some dealers charge less for a key than other dealers. Shop around.

[dworthy]

+1

If you cannot get the key to sync, see is this guy can help you out too: www.bmwgm5.com