The following items either individually or together stops the cruise control from working ( you didn't mention auto or manual box)
VSS, ( auto or drive shaft sensor in manual)
brake light switch / sensor/
clutch position sensor ( manual)
fuse
cruise control switch
,fuse
wire to the ignition control module /tacho
cruise control module
ECM
SOURCE: Cruise Control, Steering Wheel Radio Buttons, Overhead Console
it sounds like you got 2 problems...the cruise and radio buttons sound like a bad clockspring......the overhead console problem sounds like a bad ambient temp sensor located behind the grill. if it is too cold out the ac will not run
SOURCE: 1999 Dodge Grand Caravan horn and Cruise control
I recently had the same issue, but my airbag warning lights also turned on. If this is the case, it might be the clockspring. There is a recall on clocksprings for Caravans 1998 - 2000 I believe. I got it replaced for free in the dealership. Enter your VIN in this site and it will tell you if you are covered in the free replacement warranty.
http://www.chrysler.com/webselfservice/chrysler/index.jsp?screenName=recall&country=us&emailUrl=goToEmailForm%28%27R%27%29
Hope this helps.
Sonny
SOURCE: 1998 dodge grand caravan cruise control not working
does the horn work and is the air bag light on because if thats the case you have a bad clockspring. and for your year van i do belive that is a lifetime recall. hope this helps.
SOURCE: fuse location for cruise control on a 2000 dodge caravan
The cruise has no dedicated fuse, you will most likely be looking to replace the clockspring rotating contact located under the steering wheel which connects the switches in the steering wheel (horn, cruise and air-bag) to the rest of the electrical system.
SOURCE: cruise control and horn does not work
Test and replace the clockspring. Everything you mentioned runs through it first before splitting off different paths to thier own components. It is behind the steering wheel. Remember to disconnect the battery first before making any repairs.
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