4thtennenbaum

Short story: I think my trunk nav died. Can I DIY plop a new/used one in there?


Long story: a few months ago, my nav map froze on a road trip. It's a 2004 E320. I drove for many miles and the GPS updated position, but the map froze then disappeared.

I stopped and restarted the car, and all my COMAND features were gone (music, disc changer opening) and I got a black screen (not the non blacklit type, the dead type.)

I pulled some fuses and put them back in. I don't know a dead from a live fuse, but did what I'd read about. I looked at the disc in the trunk and it had a film of milky dirt on it. I'd put a small handtowel that was wet and dirty in the trunk that morning nowhere near the device.

[that sounds weird, but on my prior car, an 1998 e320, i'd put wet gym clothes in the trunk multiple times and hours later the cd changer would stop playing. and the discs would have some wetness on them. it'd usually dry out in a day or a few hours, so this same phenomenon must have happened.]

so i cleaned the disc and hoped for the best, but no change. so any advice onto next steps? i was going to go after market, but the wiring harness doesn't exist for this model due to the fiber loop. i could get it rewired for about $600 (jesus christ.) so im thinking to diagnose it at a mercedes specialist (non dealer.)

any other suggestions beyond that or prior to that? if they diagnose the nav trunk component, can that be replaced by itself? is that something i could do myself and just pop in a new one and hope for the best?

Honcho

Get yourself a MOST Bypass Loop: https://mbworld.org/forums/e-class-w...2004-e320.html