The BMW AK90 key programmer is designed to program new keys and erase old keys for BMW vehicles. It can also be used to program remotes. The AK90 is very easy to use, and it is a great tool for DIYers.

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To use the BMW AK90 key programmer, you will first need to remove the EWS (electronic immobilizer) from the vehicle. The EWS is a small black box that is located near the steering wheel. Once the EWS has been removed, you can plug the AK90 into the OBDII port and begin programming your keys.

First, you will need to insert the new key into the ignition and turn it to position 1. Then, press and hold the “OK” button on the AK90 for about 5 seconds. The green LED light should turn on to let you know that the AK90 is now learning your new key.

Next, press and release the “OK” button two times, and then press and hold it for 5 seconds again. After holding it down for 5 seconds this time, you will see the red LED light come on to indicate that your car is now in programming mode. Then, take the new key out of the ignition and wait 10 seconds before inserting it again. Now press any button on your new key six times within 15 seconds. After doing this, remove your new key from the ignition once more and wait 30 seconds before putting in a different one that you are trying to program.

Now press the “OK” button on the AK90 for 5 seconds, and the green LED light will turn on to let you know that programming is complete. If you have any problems during the programming process, consult your owner’s manual or contact a BMW dealer.

The BMW AK90 key programmer is a handy tool to have in your toolbox, and it can save you a lot of money by allowing you to program your own keys. It is easy to use and comes with clear instructions, so be sure to give it a try the next time you need to program a new key for your BMW. Thanks for reading!