How do you remove the ECU on the Mercedes CLS550 Bi-Turbo to get it flashed? Well this is a extremely easy one! The ecu is located right on the top of the engine underneath the engine cover. This probably takes about 10 mins to get to. Once removed, pack it up, ship it in, and let VRTuned give you an awesome performance upgrade. Check out these pictures on the DIY ECU Removal for the Mercedes AMG. Want yours tuned? Order your Mercedes ECU Flash Here Leave a Reply Cancel ReplyYou must be logged in to post a comment.