Question about 1994 Mercedes-Benz S-Class

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My 1994 Mercedes Benz SL500 radio display turns on, but no sound?

My 1994 Mercedes Benz SL500 radio display turns on but the amplifier does not, the power antenna does not extend either. The battery and fuses are good, what else can I check?

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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

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Have you checked the fuse at the back of the amp unit ?.Or radio.

Posted on Sep 07, 2009

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Did you check your remote (rem) because thats controls pwr to those items

Posted on Sep 07, 2009

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Another option is to check in the trunk for the secondary Fuse holder. I cant remember which one but the fuse might be blown there.

Posted on Oct 18, 2009

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