I've had my 2004 xj8 for about 2 years, have about 19 miles on it, and for the past year I've just had it in the garage sitting there. I tried to start it and it doesn't start, doesn't turn over/crank over. I've checked battery, replaced it and tried jump starting it, but still no success.
Does anyone know if there's any known problems with them sitting for a LONG period of time? Everything seems to light up on the dash/navigation unit/radio works, the air ride suspenssion doesn't fill up, can't remember if it used to fill up with air as soon as I turned the ignition or after I started the car. Does anyone have any pointers/suggestions I can look at before I take it in? Someone suggested that the computer loses 'its memory' if the car sits without power for more then 6 months, and need to be reprogrammed. Has anyone else encountered this? Any advise is appreciated - Thanks in advance.

 

No - the engine does not do anything when I turn the key.

I did try to give it power right at the starter to make sure its not a starter problem and it turns.

 

Where would the ignition cutoff switch be? Is there a way to check/reset it?

I really don't know what could have caused it,but I would like to check the 'simple/obvious' things if I knew what they were.

The only thing is that it was without power for at least 9 months - what could have reset/changed in that time...beats me.

 

I double checked the lil red switch by the drivers side down on the floor and it looks like it would be fine.

Does anyone know of the starter relay diagram?