MB EIS key test for W204 W207 W212

video how to use, click here

Instructions:

  1. connected devices, power 12-volt test card is inserted after the key lights up, then down to hear the buzzer 2; the key to pull out a loud sound, lock and key explanation is normal.

  2. if the key is inserted, the lamp lights, no sound, remove the key sound, indicating that the lock is good, the key is not normal.

  3. the key new adaptation, just insert the lock, the key lights, remove the key, and then insert the key lamp lights up immediately, then be able to hear the sound of the buzzer 2; remove the key ring a sound, indicating adaptation the key to successful. Some want to swap 5 times to recognize the new key, press their own experiences to identify good or bad.