322 Answers. The failsafe mode can appear following numerous faults being detected - some faults can be momentary and register but not cause a problem. These are normally reset by just turning ignition off/on. get the fault code memory read at a garage and this may give you a clue as to a possible problem developing. SOURCE: Jaguar s-type restricted performance displayed. Its most likely the coils and spark plugs, sometimes caused by oil leaking from the valve cover gasket. The coils deteriorate over time from engine heat and need to be replaced at 90-100k. Local garages don't have the Jaguar diagnostics terminal and are unable to do more than find basic SOURCE: My 20003 Jag wont go over 10 mph. I have a OBD II. This is a manafacturer fault code not a generic, so you would need specialist eqpt to read. However looking this up it says its an air intake temperature sensor circuit intermittent high voltage. 2011 jag xj 5.0 intermitten restricted performance turn car off then restart and sometimes runs good i also get - Answered by a verified Jaguar Mechanic We use cookies to give you the best possible experience on our website. Anonymous. 1450 Answers. SOURCE: 2004 silverado ac heater problem. try unhooking battery for a few minutes this will cause actuators to do a full sweep and reset. if it is still stuck then will need to replace the actuator for blend door on that side. Posted on Dec 31, 2008. 1 Answer. A friend of mine had the same problem, and he found out that the problem was caused by trying to cut fuel costs by using regular unleaded gasoline instead of the required Super or Premium grade that is supposed to be used in the Jag. Once he filled it up again using Premium Unleaded the problem disappeared. Anonymous. 1 Answer. SOURCE: Jaguar xj 2004 (x350 design) -. I have been with same problem on a BMW 325i. It is because you need to add oil. Less oil= extrem temperature! try to add oil, better to change oil and filter. regards. Posted on Dec 29, 2009. Jaguar S-Type: I have an 03 s-type with a non supercharged I have an 03 s-type with a non supercharged 4.2 check engine light is on with the famous lean codes car goes into restricted performance in the city driving sometimes goes off but rarely does but driv … ykWsSo.

jaguar s type restricted performance reset