Question about Cars & Trucks
08 Mercedes Benz CL550 display screen is shutting off while driving. It counts down and goes blank. Then I have to turn it back on and reboot. Any idea what the issue is here?
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Posted on Jan 02, 2017
I have had this problem intermittently since I purchased the vehicle in 2004... the dealer could not fix but showed me that there is a relay that you can pull and re-install. It's under the hood and must be done with the ignition and lights off. Pull the relay, wait 10 secs and re-install and pblm goes away. If you are standing in front of the vehicle there is a relay box on your right/vehicle left. The relay is located in the lower left-had corner of this box. Not a permanent fix, and in my experience the problem goes away when the vehicle is parked for an hour or so but if you have a long drive and want to use the radio, this 60-second fix is worth knowing...
Posted on Nov 08, 2008
I had same problem with my 1994 SL600. Also when this happens you will lose your interior door lights when you open the doors. My problem was solved by taking out the, A-white 40 amp 12V Relay and cleaning off the 6-prongs and reinstalling. It is located in the box underhood ahead of the main fuse box. Just need a phillips screwdriver. It is the fartherest relay in back left. I had to pull the one out in front of it to be able to remove the white one. You can hear it click when you push in dooropen switch. When working right you do not hear it. Hope this helps.
Posted on Sep 18, 2009
Here are some causes for this failure:
"E2"or "E3" (Without CD Changer)
1 Input Power to the RECEIVER UNIT (Trunk mounted) is missing, Check with volt meter to test for 12 volts
2 Fuse of the RECEIVER UNIT (Trunk mounted) is open, Replace it with 7.5 amp fuse.
3 The BUS CABLE (gray colored) that connects to HEAD UNIT(dash mounted) to the RECEIVER UNIT(trunk mounted) is not connected or is defective.
4 RECEIVER UNIT(trunk mounted) is defective. Go through these and try your radio. Hope this works out for you.
Posted on Feb 21, 2010
SOURCE: 2007 S550 Mercedes Benz Command
The first thing a Tech (or I) would do in this case is check the BCM (body control module) for a fault code related to these issues. A scan tool will be needed to start this procedure. Otherwise, to guess at a cause would not be a cost effective or correct approach for diagnosis. Your vehicle has many circuits and control modules that control these accessories, and scanning the system will help pin point a solution.
Posted on Feb 02, 2011
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