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Discussion Starter #1 (Edited)
Our 2000 E320 wagon with the Command navigation system has recently developed an intermittent problem: car blows the #10 (7.5 amp) fuse in engine bay. This results in the car losing all steering wheel controls (radio +/-; trip computer; and horn become inoperable), console airbag light comes on, and the radio shuts down with message such as "insert key and turn on ignition or radio will turn off in 3 minutes."

Replacing the blown #10 fuse restores all the functions until it blows again (could be hours, could be days). Horn ring or instrument cluster were suspected. After 3-days in shop for diagnostics mechanic can not locate problem (he did not charge me). I am now wondering if it's possibly a radio/nav issue? (FYI - car had phone removed a while ago, and CD changer has long been inop.)

Anyone else seen this fault that resuts in #10 fuse blowing? Solutions? Suggestions?
 
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