How do you use a E 500 murcedes un lock sensor?

To use the unlock sensor on a Mercedes E-Class E 500, approach the vehicle with the key fob in your pocket or bag. Place your hand on the door handle, and the sensor will detect the key fob and unlock the door automatically. If the vehicle doesn’t unlock, ensure the key fob is functioning and is within range. For manual unlocking, you can also use the key fob buttons or the key blade if needed.