315/433MHz Adjustable ID44 Chip EWS System Remote Car Key Fob 3 Button for BMW 325 330 318 525 530 540 E38 E39 E46 M5 X3 X5 (1)

Five Star all the way! Can be programmed with the AK 90 or AK 90+, majority on here cannot. Function perfectly, 100% compatibility and fit. My new favorite seller

For those who are struggling to make your newly cut key work, bear in mind that the new key must be programmed by a dealer or a locksmith who has the software to code your key. If your newly cut key can turn on the lights, the cutting part was done correctly. However, without programming, it won't start the engine. You may follow some online instructions to "program" your key, but only to a point where your remote buttons work, and the key won't start your engine. This is because your new key must be programmed and authenticated, and the authentication identifier must be saved in your car. The battery in your remote only powers the remote functions, but the identifier on your new key is coded on the piece of firmware in your remote which does not lose the identifier information even when the power source is off.

I will take some of the blame here. I didnt do any research about cutting and coding the key. BMW wont touch these keys. I found a local locksmith to cut them $100 a key. I found a separate guy to code 1 of the keys, $200. Key lasted from May 2025 till April 2026. It wasnt dropped or abused, it just stopped starting the car. Do your do diligence. I couldnt find anyone who would program the second key, not sure it would be a good idea anyway. I found a local locksmith, provided the key, cut it and programmed it for under $200

Key works for the ignition. But me and the mad scientist weren't able to program the key.

Good quality at a good price. Easy to program.

Works fine as far as pairing the remote with the car, but the transponder is another story. Locksmith can’t program it. BMW can’t program it. It can do everything except start the car.

The keyless functions on the remote work using ignition sequences. I haven’t had the key cut yet, so I can’t confirm if it can be programmed. Other than that, everything works great and I’m very satisfied with it.

I now have a new key that is fully functional. Followed some random internet instructions to program the fob. Used a the working key to cycle between first position and off 5 times very quickly and removed the key. (didn't work when trying a single "on/off" turn of the key). I then held the unlock button while pressing the center button 3 times on the new key and letting go of all the buttons. Be sure the doors are closed, you are in the driver's seat, and the doors are unlocked. The remote on the new key worked fine once this process was completed. The original key remote was not functioning, likely due to a dead battery, so the "good" key doesn't need to lock and unlock for this step to work. It would not start the car though. So I started the car with my working key, turned it off and very quickly, like immediately, inserted the new key tried to start the car, and it actually worked. Not sure if it will work for everyone, but this managed to sync the transponder in my 2000 528iT with no fuss. Just turned the car off and with no delay out the new key in and now it works like a factory original. I had an original key fob that was missing the internal parts. I cut that key open and took the electronics out of this one and installed them in my OEM key and glued it back together. So I didn't actually use the blank and fob itself. Just made an empty OEM cut blank operational.

المنتج بجوده عالية انصح به بشدة توصيل سريع

En cuanto se programa la llave el chip trabaja sin problema ‘

Easy to operate but you need to use blades to open it just like the official one. Anyway cheaper than the official one and kinda great deal

Excelente Producto

didnt have any issue tried program it right away and works