NAV / AUDIO DOWN
MY PROBLEM IS ON MY 2005 E500. THE NAV / AUDIO SYSTEM WORKED FINE A FEW DAYS AGO WHEN IT WAS PARKED IN MY GARAGE. TODAY ITS DEAD: AS IN NO SCREEN DISPLAY, NO SOUND, IF YOU PUSH THE EJECT BUTTONS FOR EITHER THE SINGLE DISC OR THE CHANGER NOTHING HAPPENS, IF YOU SCROLL TO THE GPS AND AUDIO DISPLAYS IN THE SPEEDO ALL IT SHOWS IS "---".
MY FIRST THOUGHT WAS A BLOWN FUSE. UNFORTUNATELY THE PREVIOUS OWNER LOST THE MANUAL SO I DON'T KNOW WHICH FUSE CORRESPONDS TO THE RADIO SYSTEM SO I TOOK A CONTINUITY TESTER TO ALL THE ATC FUSES IN 1) THE BOX IN THE DRIVER'S SIDE TRUNK WALL AND IN 2) THE FUSE BOX UNDER THE HOOD (IN THE BACK ON DRIVER'S SIDE)... ALL FUSES TESTED POSITIVE FOR CONTINUITY...
THE DEALERSHIP WANTS $120 TO PERFORM A "DIAGNOSTIC" BEFORE THEY BEGIN TO FIX THE PROBLEM....
ANYONE HAVE ANY SUGGESTIONS? TROUBLE SHOOTING TIPS? ALSO A FUSE BOX DIAGRAM WOULD BE AWESOME! THANKS!

MY PROBLEM IS ON MY 2005 E500. THE NAV / AUDIO SYSTEM WORKED FINE A FEW DAYS AGO WHEN IT WAS PARKED IN MY GARAGE. TODAY ITS DEAD: AS IN NO SCREEN DISPLAY, NO SOUND, IF YOU PUSH THE EJECT BUTTONS FOR EITHER THE SINGLE DISC OR THE CHANGER NOTHING HAPPENS, IF YOU SCROLL TO THE GPS AND AUDIO DISPLAYS IN THE SPEEDO ALL IT SHOWS IS "---".
MY FIRST THOUGHT WAS A BLOWN FUSE. UNFORTUNATELY THE PREVIOUS OWNER LOST THE MANUAL SO I DON'T KNOW WHICH FUSE CORRESPONDS TO THE RADIO SYSTEM SO I TOOK A CONTINUITY TESTER TO ALL THE ATC FUSES IN 1) THE BOX IN THE DRIVER'S SIDE TRUNK WALL AND IN 2) THE FUSE BOX UNDER THE HOOD (IN THE BACK ON DRIVER'S SIDE)... ALL FUSES TESTED POSITIVE FOR CONTINUITY...
THE DEALERSHIP WANTS $120 TO PERFORM A "DIAGNOSTIC" BEFORE THEY BEGIN TO FIX THE PROBLEM....
ANYONE HAVE ANY SUGGESTIONS? TROUBLE SHOOTING TIPS? ALSO A FUSE BOX DIAGRAM WOULD BE AWESOME! THANKS!
Looks like you only looked at two fuse boxes, you should have a look at the interior compartment fuse box at the drivers side. You can reach it when you have to door open and remove the flap.
It could be the fuse at the head unit itself (at the rear) or a connector unplugged. Looks like the head unit would not have power and then the instrument cluster cannot read the data via the CAN bus. If the head unit powers up momentarily, then the issue should be elsewhere, like one of the MOST ring devices or the MOST ring connector.
THANKS AGAIN FOR THE HELP!


