2005 E320 Dead Radio - PeachParts Mercedes-Benz Forum

Randy · #1 02-13-2017, 01:07 PM

Hi, got in my Car this morning, started down the road and...no radio. Typically when I turn it on, the bezel surrounding the power button illuminates red; now, nothing except the Mercedes-Benz and star will appear on the display for about 20 seconds, then go off. No red bezel.

Dmitry at Pelican Parts · #2 02-13-2017, 04:41 PM

Hi Randy - I've attached a link below to one of our site's DIY tech articles on replacing the radio. Hopefully this will help you troubleshoot and resolve the issue you're having. If you need additional info, please feel free to post a Comment just below the article and someone will get back to you with more details. Best of luck!

Mercedes-Benz W211 Radio Navigation Display Replacement (2003-2009) E320, E500, E55 | Pelican Parts DIY Maintenance Article

-Dmitry

Randy · #3 02-13-2017, 06:28 PM

Thanks a bunch!

Randy · #4 02-14-2017, 08:28 AM

The tech article cited was exceptional; however my display seems to be working, but not the radio itself. My car has the base radio and CD player, not the navigation system.
Isn't the actual radio unit remotely mounted, and not included in the display?
is there a fuse?
By the way: during the same trip when I found the radio not working, the Check Engine illuminated. Nothing seems amiss performance-wise and there are "NO MESSAGES" on the service display.
I noticed the Car in the garage this morning: I can hear a very faint sound like a tiny electric motor running. It seems to be in the rear of the Car, possibly either in the driver's side of the trunk, or perhaps underneath. It does not seem to be the brake pump.

Randy · #5 02-14-2017, 11:22 PM

This afternoon when I got home from work, the battery in the '05 was completely dead, so whatever was running this morning had exhausted it.
I put the charger on. I removed Fuse 6 from the trunk-mounted fuse block and the running sound, which was coming from behind the fuse block, stopped. I also removed Fuse 26 in the block at the driver's side of the dash. I charged the battery for several hours, then reinstalled both fuses, and Ta Da! The radio works perfectly. The car started right up, and everything seems back to normal. I let it idle a couple minutes then shut it down and the running sound stayed about 20 to 30 seconds, then stopped. I left both fuses in, and left the charger on overnight to get a good charge. This seems to have been a sort of reboot which hopefully got everything going normally. I will be out of town a couple of days, and look it over when I return.

By the way, this Car is pretty-much the standard car: no navigation system, no super seats, etc. and there was no vacuum pump underneath the back seat. Whatever was running all night and all day was like a hard drive maybe but I am not certain what it is except it seems to have something to do with the radio.

ILUVMILS · #6 02-15-2017, 12:07 PM

The Audio Gateway is mounted behind the left side trunk liner. That may explain the radio issue as well as the flat battery..........

Randy · #7 02-15-2017, 01:55 PM

I love my E-class; best Car I've ever owned. I hope it's back to normal for a while now. Thanks!