Although sometimes the CC actuator draws too many amperes from the CC amplifier and fries the amplifier, making the owner think it was the amplifier all along. Owner replaces/resolders/rebuilds amp, same thing happens a few miles down the road, owner gets pissed, curses MB.

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'02 BMW 325i
'85 300D 450k
'93 190E 2.6 170k(killed by tree)
'08 Ducati Hypermotard 1100S 6k
'06 Ducati S2R800 14k(sold)