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I bought an used jeep commander 2008, and the electronic speed control doesn't work at all.
Are there easy steps to detect why it isn't working, or fix it, if any ?
Thanks ...Emilio
 

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Hi,

Don't know if you have fixed this yet, but first thing to do would be to ensure that you are operating it control correctly.

You can download a manual from the dealer webpage.

http://www.jeep.com/en/owners/manuals/

Once you have determined that it has failed, the most likely culprits are usually a disconnected speed control wire on the drivers side of the engine, blown fuse, broken switch, or broken wire. These are just guesses of course, but if you provide more details ( I would start a thread in the maintenance section of the forums) I am sure someone will assist you.

Good Luck.
 

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I debugged the same problem on my '06 Commander with 4.7L V8. The cruise wasn't working, and I learned there are really no fuses for it. I scanned the codes, and had a P0582 (Speed control vacuum solenoid condition) and P0586 (Speed Control Vent Control Circuit). After researching where the speed control servo is mounted, I examined the lines to/from it, and discovered the electrical connector to the servo was not connected, and was hanging nearby. Also, a grounding strap unrelated to it is draped tautly over the side-to-side support nearby. I think the engine was worked on, and someone rushed through the reconnects. Happy to have working cruise control now!
 

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Yep. Vacuum hose going to the throttle body. Enjoyed a 7 hr drive with no cruise right after an emissions smoke test. Not fun.
 

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I debugged the same problem on my '06 Commander with 4.7L V8. The cruise wasn't working, and I learned there are really no fuses for it. I scanned the codes, and had a P0582 (Speed control vacuum solenoid condition) and P0586 (Speed Control Vent Control Circuit). After researching where the speed control servo is mounted, I examined the lines to/from it, and discovered the electrical connector to the servo was not connected, and was hanging nearby. Also, a grounding strap unrelated to it is draped tautly over the side-to-side support nearby. I think the engine was worked on, and someone rushed through the reconnects. Happy to have working cruise control now!
Good information @gbuskirk; Thanks for sharing.
 
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