How do you turn off smart key battery low on a 2009 xf supercharge?what could be the problem when my light comes on saying low coolant level but coolant level is full and also a light comes on that says restricted perfomance and when i push down on the gas it has no power and is slow to get up to speed as you push on the gas?
It is in limp mode
have the fault codes read to find the fault
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 error codes with a reader. Its important to get this fixed because it's causing damage to your caltalytic converters. They are expensive.
SOURCE: check engine light is on,display says restricted performance
Anything can cause the check engine light to go on from a loose gas cap, to a transmission issue. When the onboard computer detects an issue, it will restrict performance so as to not damage the engine any further. An Oil change won't affect this light. The only way to determine the cause of the light is to have the computer scanned with an OBD-II tool (Autozone does this for free) to determine the codes and cause for the light. You can also clear the light with the OBD-II tool, but if the problem is still there, the light will just come back on
SOURCE: jaguar s-type restricted performance
I had the same problem. Restricted performance and running rough at 3000 RPM. I have an OBDII code reader and found that the problem was in the air mass flow sensor, which is just after the air filter. I pulled this out and found it was dirty and had butterfly wings in it. The last shop where I had the oil changed replaced the filter for me but put in the wrong size. Close but no cigar. Bought some *** Flow Sensor cleaner at auto store and fixed the problem. Get an OBDII reader with the ability to erase the codes. Comes in real handy.
SOURCE: any ideas how to reset the service light on a 2009
have your mechanic remove the combination meter ,there is a reset switch.
SOURCE: Why does my Engine coolant low engine light come
Your thermostat may need replacement - they need changing every 2 years. Here is a link http://www.jagservice.net/jaguar_v8_secondary_tensioners.htm
Desmond
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