I searched the forum, but didn't find my exact issue. Pushing the cruise control "On" button on the steering wheel is confirmed on the dash that cruise control is turned on, but pressing the + Set button or Resume button seems to have no effect. There is no message displayed on the dash and the cruise control does not work. Pressing the "Off" button does work and is confirmed on the dash that cruise control is turned off. Could this be a switch issue where I just need to replace the steering wheel switch assembly? Or is it some other component failure? There are no CEL codes. It's been non-functional since I bought the car used.

Thanks

 

Could be a dirty + switch. Clean or use it a lot and dirt should shift.

It would be a bit harsh to get a MIL for such a thing, even if the car can see the control is faulty! (I doubt it can anyway.)

Refer to electrical guide to understand what occurs. You could use a meter (DVOM) to test it.

I expect tests are in the workshop manual.

Both the above are free to download.

 

Might be the clock spring. Does everything else on the steering wheel work?
Horn?
Radio controls?

If it's just the cruise up and down then change the steering wheel switches. But the clock spring is a known problem.
.
.
.

 

^+1. That's a great catch. It was the clock spring on my early 2002. Radio volume function was intermittent then non existent. Cruise went next. Was able to get used for $60 off eBay, and had independent Jag mechanic install. 10k miles and so far, so good.

 

I replaced the cruise control switch assembly....no change. Everything else with the steering wheel works as it should so it seems like a specific cruise control problem. Could that still indicate an issue with the clock spring? Any other ideas? Thanks for the help

 

Post #2

 

Were they new switches? Does the rest of the cruise work OK?


Yes it still could be a clock spring because as they wear you will slowly lose more and more functions but you might work on the switches a bit more before swapping it out.
.
.
.

 

The ON and OFF buttons on the original switch assembly worked (the display on the dash would indicate cruise was on and off when the buttons were pressed), but the rest of the buttons seemed to have no effect. I bought a used switch assembly off ebay and installed it, but the functionality remained exactly the same. It's unlikely that both switch assemblies were defective in the exact same way so it must be something else. Maybe the clockspring like you suggest. I did find a used pump/solenoid assembly on ebay for only 25 bucks so I'm going to try that next, then maybe the clockspring. Thanks

 

Saw one on EBay for 49.99. Another symptom is a B1932 code, or another blinking airbag light (later solid) may also be due to a bad clockspring.