Engine control module from a 2007 Mercedes-Benz GL320 CDI. This was carefully removed from a vehicle that ran well with no check engine light on. The case has some corrosion from normal use, but this will not affect its normal function. The connectors have no corrosion or damage. The images are of the actual item you will receive. This ECM has been unlocked. This will still need to be programmed to your vehicle during installation. But since this ECM is unlocked, the programming process is no different than installing a new ECM. This makes finding a repair facility to program this part much easier as it eliminates the hardest part of the pre-owned ECM installation process. Fits 2007-2008 Mercedes-Benz GL320 CDI with part number 642 150 02 77 ONLY.