I own a 2001 XJR8 and every time i change the volume up it would skip to a random number and sometimes go all the way down and when i volume down it goes down all the way please help...dont wanna make another dealer appt.





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2002 XJR 37k (British Racing Green)
2001 XJ8 76k (Topaz Metallic)

 

Definitely sounds like coil in the dial is bad. Are you speaking of the dial itself and/or the steering controls both doing it? What system do you have, the base or the premium?
Check this and do a site search for TSB's and check the electrical diagram...JagRepair.com - Jaguar Repair Information Resource

I still have my premium (with adjustable to standard) head unit if you want to make an offer?

 

My dial is starting to do the same thing, it will randomly jump 5 ticks opposite of the direction I'm turning. My sister's Chrysler's radio does the same thing, and it's about the same age.

Maybe someone has pulled the radio apart and cleaned the dial contacts? I'm not sure how they work, if it's a rotary encoder or something else. Any TSB's on it?

 

I have the base sound system. the steering wheel controls are good.

 

not that im aware

 

I had similar symptoms and used this cleaner spray: https://www.amazon.com/CRC-5103-Quic.../dp/B000BXOGNI, which worked for a few months before the same symptoms came back. Used it again and have been symptom free for the past month. Simply pull the radio knob off and spray the cleaner around the shaft of the dial.

 

Hah, I jinxed it. Same symptoms reappeared with a vengeance today after the humid weather we've had. I've ordered a Deoxit product, will report back on how that works.

 

Deoxit D5 has fixed the issue. This product supposedly has some sort of lubricant in it along with the cleaner which will prevent the issue from reoccurring. Only time will tell.

 

Glad to hear that the DeOxit D5 worked for you. CAIG (or HOSA) makes a full line of electrical contact cleaners/lubricants/protectors. I have used that along with their other product, HOSA F5S-H6 Faderlube to clean and lubricate all types of switchgear in classic British cars with amazing results.

I would highly recommend that any forum member working on their own car get this in both the spray and the squeeze tube and use it when R&Ring any electrical connection, especially under the hood. Guarantees a good clean connection and protection against future corrosion.

 

I came back to this today haha, alright looks like i have to purchase this product, thanks.

 

I would try cleaning -- I bet you could get a used head unit for not much. Finding someone to fix it would be the issue .. not many of those guys around.

 

thats tru, i bet getting a new used would be cheaper.

 

2-year update: All is well, symptoms (volume going up when turning knob down, etc.) have never returned. Our recent bout of heat and high humidity should have reactivated the problem if it was ever going to come back. I'm impressed with the Deoxit D5.