Cruise requires a few conditions to be met, one of these is knowing what is happening in the transmission, a fault could be caused by the selector switch not providing the correct info.
Scan the beast and see if there are any transmission codes set as this may discover something.
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There are 4 wheel drives, and there are Jeeps... seems I found out too late in life.
I didn't get any codes either when mine played up briefly. I'd do all possible before heading to a dealer, why not pull the switch anyway and clean the contacts, nothing to lose.
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MY13 GC Laredo CRD - gone but not forgotten
MY23 Skoda Octavia MKIV wagon - fully loaded
Over on jeepgarage.org WK2 section there is a "cruise control not working thread" dating back to 2011...
Not much there except most issues seem to relate to the steering wheel switches - replacement cured the not working issue.
There is one poster who stated pressing the On/Res buttons at the same time turned his cruise control on. Still a likely switch issue though.
John
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2015 Laredo CRD with QL - that replaced our 2012 Laredo CRD Bright Silver with QL
Hi to all we finally got to the bottom of the problem, someone had flashed the computer with a later model program that had adaptive cruise control reflashed with right program and all is good working as it should, 6 hours labour to find it
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2013 Jeep Grand Cherokee Laredo 4x4 CRD
