2.7D XJ 2007 All warning lights on the dash, imobiliser on not starting

[Blake1312]

Really getting to the end with this car now and am praying someone has had similar or can point me in the same direction.

The car is a 2.7D Jaguar XJ 2007, and the symptoms I'm getting is every single warning light possible is coming on the dash, loss of power steering speedo and rev counter. Have also had it not start due to the immobiliser flashing and several times hasn't started at all meaning a bus home! Not what I expected when buying one of these.....

Have so far cleaned all the earths up round headlight areas which cured it for a few days then back on. New battery again cured for a few days now back on and currently not starting! Checked the charge rate on the battery which is good. I had the AA out too who found a immobiliser fault code but removed it and couldn't fault it after, but came back on a few minutes after he had gone when driving. Tried using spare key again same symptoms.

I've seen alternator being a problem on several jaguars but would it cause these symptoms? Especially when the battery is showing a strong charge rate?

Thanks in advanced I really hope to get this sorted soon! :(

 

[JOE-DOT-COM]

Hi

Favorite and top of the list, battery, check battery voltage

a low battery will cause all these problems, even more on a diesel, if the battery is on its way, or battery not being charged correct, when you switch the ignition on, the glow plugs will suck a big chunk of the battery, then starting it will more than likely drop it below 12v, causing an array of faults

It may be charging, but the battery is not holding the charge, once you attempt to start the car, the voltage will drop and cause all the faults and until you fully charge the battery and disconnect it, it wont clear the faults

If it were mine, If the battery is older than 3 years, replace the battery, if its newer than 3 years, charge the battery overnight, then disconnect the battery for 30mins, to clear the faults, the reconnect and start the car

this is one of the most common problems on the jaguars, more so on diesels as they drain so much more power than a petrol on starting

cheers

Joe

[Blake1312]

Thanks for the response, I have fitted a new battery recently which cured it for 4 days and I thought all was good. But today its all come back on and will not start, all lights on immobiliser flashing away.

[JOE-DOT-COM]

Hi

If it worked for 4 days, then its looks like it a voltage fault, check the battery voltage, I bet the voltage gets lower and lower

you must have a large battery drain, charge the battery overnight and if it cures it for a few days, then its got to be a drain, if you say its charging ok, if it only used for short trips the alternator wont be able to fully charge itself on short trips

you need to check with a meter what sort of drain there is on the battery,

also check for anything obvious like boot light stuck on, interior light stuck, maybe the rears or glovebox, has it got a tracker, there usually battery backed up and when the backup battery fails will put a large drain on the battery.

only way to tell for sure is to monitor the battery drain current with a multi meter to see if there is anything with excessive drain

cheers

Joe

[Blake1312]

Thanks again for the reply, changed the new battery with another battery under warranty to make sure that it was a new duff battery. Put on still the same even had a service due light come up which is new, again car still not starting. Which makes me think with a brand new battery this would rule out the alternator and battery?

 

I did find this which I have just called jaguar in regards too as its exactly what my car is doing, so want to check to see if mine falls into this category.

http://www.jagrepair.com/images/TSB/TSB2/NEW XJ/413Inst & panel illumination/XJ413-02 Multiple Warnings On Instrument Cluster.pdf

 

[david moore]

if this is still giving you problems and you feel that what ever path you try nothing seems to work!  get a auto electrician who will go through your car testing it from the ignition right through until they find what is the cause.