this morning i went into my garage to pull my '99 xjr out and as soon as i turned the key "Stability Fail" "Enging Failsafe Mode" and "Tractioncontrol Fail" and " low oil pressure" all came on at the same time and it was very very shakey. i turned it off immediately. turned it back on, everything was fine, ran fine everything was good? i dont get what the problem is here? any ideas