Mercedes may use some proprietary codes but the newer units shoud take this into account.

I'd try ebay and ask this specific questionm first. Here a unit that uses a palm pilot.... http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=2480243524&category=43989

__________________
Rick

'85 380 SL (sold)
'85 Carrera Flatnose
'71 280 SL Signal Red/Cognac