2005 ml 350 VIN 4JGAB57E25A548558
yes it has some markings, but even with lighting, i couldnt make it out. it had the 2 screws which i removed and was trying to force it thru the hold sideways cuz i didnt want to break it. im heading out right after i eat. once i get that panel out, i can fit on the floor laying half in and get the connector off.You undo two screws lower panel and from above look at the lock. If I remember it actually has arrow on it.