tommyc55

how do i update my c55 2005 sat nav?
i'm going round in circles on internet!

Accidental L8 apex

If you insist on not just using your phone, you'll need to get an updated CD/ROM that's compatible. The newest I've seen was a 2013 update and even then, the Navi unit is a joke when operating at 100%. Takes forever to input your destination and the graphics are maybe 16-bit, probably 8.

MrVu

I agree. However, if you're taking a trip to a national park or in the middle of a no service area, the navi is great to have as a backup to use.

Accidental L8 apex

Very true. Have been without cell coverage enough to know the satellites do come in handy.

I can usually find a newer cd-rom on eBay. Just make sure it's for the Command unit of a w203 and you should be good to go.

Fantomas

My navi never worked, tried cleaning CD/DVD, tried other CDs with no luck. Upgraded to a 8" touch screen unit.
https://mbworld.org/forums/c32-amg-c...-8-stereo.html

Viper98912

There's a DVD behind the screen (press the eject button to make the screen move). You can buy an upgrade disc online. Be aware though that it won't upgrade the graphics or anything, it mostly updates the roads and points of interest (POI's).