The climate control panel on my 1994 XJ6 has a power supply issue for a few weeks now.
The symptoms are that the fan switch does nothing and the various buttons on the climate control panel are also inactive.
The only thing that does happen is that when the fan switch is turned from High to Defrost, a click can be heard under the passenger’s side of the dash.
The fault seems to VERY rarely suddenly go away and the system will work normally for a short period of time but this happens very infrequently.
This evening I noticed that other interior subsystems were also inactive.
Specifically the radio and the power seats.
As I was riding around I think I might have hit a very minor pothole or road irregularity and suddenly the radio display lit up and the power seats worked.
So I tried the fan switch and that was working too.
I continued driving down the road and shortly there after all of these functions just as suddenly went dead again all at the same time.
Can anyone think of a reason why all three subsystems, climate control, radio and power seats would all loose power at the same time?
Theories or speculation always welcomed.