I have a 2004 Jaguar XJ8. My climate control keeps turning on and off at random.

Thank you so much for the reply I'm really stumped by what's happening. I replaced the climate control unit with two other units I obtain. And the problem continue. I'm not sure but I think the power is turning on and off I've checked off relays all fuses. It seems like it might be a bad power connection to the module itself. I'm thinking about Reef Lighting in a new plug for it my last resort is taking it to the dealer which I dread if I have to go when it's on it works perfect it just turns off and Cycles on and off. Thank you so much for your input

An intermittent open wire will absolutely cause this issue also. Trace you wiring to your connector at the unit and also obtain a wiring diagram to aid in testing.

Thank you so much for the comment. I'm still trying to determine what may be wrong I think I'll have to give up and take it in to get looked at but thank you so much