My cruise stopped working awhile back too. Then I read in this forum to only use Oshram or Bosch brake light bulbs. Not the #1157 you get at your local parts store. The cruise system relies on a critical ground signal from the bulb to operate correctly. #1157 bulbs do not have this, thus the cruise system thinks the brake is applied, and therefore disengages.

I remember replacing a burned out lightbulb with one I had in the garage. Sure enough, no cruise. So I got myself several Oshram bulbs at the junk yard for $1.00. Got cruise. I hope your problem is as easy to fix.

If not checkout the DIY links by clicking on "shopforum" at the top left of this page. Arrow down until you find the link. Then look through them for cruise control. Good luck

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Selling used Mercedes parts on Ebay...always changing...
cdplayer51 take a look!
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