1. This product does not work with the OEM factory backup camera, please buy our aftermarket back camera instead.

2. This product does not work with the OEM 6 CD changer, but our product supports DVD disc playback and SD/USB music/video, you do not need the old 6 CD changer any more. 

3. This product does not have Sirius/XM radio feature, you will loose the Sirius/XM.

NOTE If you have any of the above 2 head units (NTG1 Comand APS or NTG1 Audio 50 APS) then the head unit is separate from audio gateway/sound amplifier on your car. The speaker system will be powered by a fiber optic (MOST) amplifier(audio gateway) located under passenger foot rest. Head units which are run by MOST will have a pair of orange plastic fiber-optic cables on the rear and no speaker outputs. The majority of cables such as speaker wires, power wires and the radio antenna are found under passenger foot rest at the original amplifier. This means that to integrate this aftermarket unit with the car you must run an extension kit to the speaker/power wires under the passenger's seat. Installations requiring the extension are more time consuming than for cars that do not require it, however it is still relatively straight forward. The extension kit is optional, please add it from the drop-box. Check more info about the Extension Cord Note that only four car speakers work after install this kit because the original amplifier/audio gateway is passed and it uses our radio's internal 4*45W amplifier.

NOTE If you have the NTG1 Audio 20 APS/NTG2.5 Comand APS/NTG2.5 Audio 20/50 APS/MCS-II as shown in above photo WITHOUT external Harmon/Kardon Logic 7 Surround Sound System in your Mercedes-Benz then the Head Unit and audio gateway are in one component. This aftermarket head unit will be a direct plug-and-play replacement using the standard wiring adapter lead provided.

If you have the NTG1 Audio 20 APS/NTG2.5 Comand APS/NTG2.5 Audio 20/50 APS/MCS-II as shown in above photo WITH external Harmon/Kardon Logic 7 Surround Sound System in your Mercedes-Benz then the head Unit is separate from the sound amplifier. Then this aftermarket head unit will be a direct plug-and-play replacement using the standard wiring adapter lead provided. But you also need the Fiber Optic(MOST) adapter for Mercedes-Benz. The adapter is optional, please add it from the drop-box. It makes this new radio work with the original Harmon/Kardon Logic 7 Surround Sound System and ALL car speakers work as before. Check more info about the  Fiber Optic Adapter This product is NOT compatible with Mercedes-Benz SLK-Class(R171) Japan model. Because the connectors behind the radio(Japan model) are totally different from head unit from other countries.