2H S5

The upgrade is basically just to keep the oem look with the steering wheel interface and without changing the speakers also.

MB nav isn't the greatest. I'd rather go with an aftermarket, maybe even the eclipse unit for touchscreen capability.

whoover

Pre-2004, MB used a proprietary fiber network (D2B). That's why all those components need to be changed to upgrade to the 2004 system that uses the industry standard MOST network. Aftermarket D2B components are not generally available, so such an upgrade will not integrate with any remaining audio-based components. So yes, you can use a third-party head unit, but existing integration between NAV, radio, CD changer, phone and Teleaid will break. Depending on how you do it, the breakage can be more or less annoying and obvious.

The MOST upgrade in 2004 was a big deal. It enables a lot of flexibility that is lacking in the D2B system. If this is important to you, consider trading the car in for a 2004 at some point.

SCLASS1

So has anyone got the 2003 wide screen fitted and fully working from a 2.5 conversion ?

benzmodz

Sunman (Sunil) and MBENZNL (Steve) have both finished the upgrade.

LAWYER2

was it really simple as plug, play, and replace wood trim??