COMAND meltdown
Thread Starter
Member
Joined: May 2007
Posts: 85
Likes: 46
From: Georgia
2022 EQS 450+ Pinnacle
COMAND meltdown
Hello,
Am new to board and just bought a 2005 E500 with stock radio. Everything worked fine until this morning, when the unit would hold the "Mercedes Benz" sign and not proceed further. I turned the car on and off, the power on and off, but the screen stays with "Mercedes Benz." Occasionally it will go to a white screen that reads "NAV not available." None of the other COMAND buttons work either (RAD/SAT/etc).
Any ideas? Is there a way to do a hard reset? Do I have to take it in for diagnostics? This is annoying as I've only had the vehicle for 5 days!
Any assistance is much appreciated!
Thanks in advance,
PMMD
Am new to board and just bought a 2005 E500 with stock radio. Everything worked fine until this morning, when the unit would hold the "Mercedes Benz" sign and not proceed further. I turned the car on and off, the power on and off, but the screen stays with "Mercedes Benz." Occasionally it will go to a white screen that reads "NAV not available." None of the other COMAND buttons work either (RAD/SAT/etc).
Any ideas? Is there a way to do a hard reset? Do I have to take it in for diagnostics? This is annoying as I've only had the vehicle for 5 days!
Any assistance is much appreciated!
Thanks in advance,
PMMD
Member
Joined: Nov 2006
Posts: 90
Likes: 0
From: San Diego, CA
'04 E55; '03 E500 Sport
My '04 E55 had exactly this same problem, after doing a quick search here I determined that it was a bad accessory battery.
I was able to replace both of the batteries from a generic auto parts shop for about $168...Bosch for the main battery ($89 Bosch Group 46 w/ 850 cca, I think) and an Interstate accessory battery (it's a very common AGM type 14BS motorcycle/ATV battery, $69 ). Stealer wanted over $380 for parts plus labor to install, total quote was almost $600! Only takes a 10mm and 13mm socket or wrench and well under an hour. I was able to use some small Radio Shack jumper leads to splice in the new batteries while replacing them, so did not need to re-synch windows, sunroof, etc.
However....
After replacing the batteries, all the "convenience systems" came back, except for the nav system. I'm still getting a "nav not available" message on the COMMAND display when I select the nav system, and the DVD unit is non-responsive (DVD won't eject, etc.). I even tried to reset it by pulling the nav fuse, but no luck.
Before I go to the local stealer, is there any other procedure I can try? Thanks....
__________________
I was able to replace both of the batteries from a generic auto parts shop for about $168...Bosch for the main battery ($89 Bosch Group 46 w/ 850 cca, I think) and an Interstate accessory battery (it's a very common AGM type 14BS motorcycle/ATV battery, $69 ). Stealer wanted over $380 for parts plus labor to install, total quote was almost $600! Only takes a 10mm and 13mm socket or wrench and well under an hour. I was able to use some small Radio Shack jumper leads to splice in the new batteries while replacing them, so did not need to re-synch windows, sunroof, etc.
However....
After replacing the batteries, all the "convenience systems" came back, except for the nav system. I'm still getting a "nav not available" message on the COMMAND display when I select the nav system, and the DVD unit is non-responsive (DVD won't eject, etc.). I even tried to reset it by pulling the nav fuse, but no luck.
Before I go to the local stealer, is there any other procedure I can try? Thanks....
__________________
Last edited by dbarrym; Nov 3, 2008 at 11:45 PM.
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