Having recentley got a x350 this is my first post on this forum and it is about a problem I have with the remote central locking / alarm.
I cannot get the remote locking to work and have tried the resetting sequence to no avail.
Lancasters have told me that it ether the door security module or the body processor module.
Has anyone had the same problem and where are the said items located and is there any way to find out which one has failed.
Apart from the locking problem there are just a couple of minor things to do to make the car perfect, and what a car it is :
Here is a pdf 350 electrical guide for the car. Most, if not all the gen you need is in there.
https://www.google.co.uk/url?sa=t&rct=j ... VoqY5e3jXh
Have you tried new batteries in the key fobs?
A diagnostic tool such as the iCarsoft 930i for around £90 puts diagnostics within your grasp. An excellent addition to anyones tool kit. Mine lives permanently in the car for immediate use. It is very reassuring to be able to do ones own diagnostic work and can save a hugh amount of cash in the long term.
These cars are indeed a serious piece of kit. No plans to change mine. The "Silent Sledgehammer" of all time!
If any one has had this problem and has not been able to sort it out yet this might help, I had the restricted performance come up on my car with the engine management light as well. I took the car a 2004 X350 XJR down to my local garage and they thought it could be the MAF sensor and also said it was running lean.
I also checked out online and came up with the same conclusion.
One sensor and garage bill later and problem solved !! until I got to my front gates and it all came back !! [email protected]**#ks, I put up with it for a while as I had to go to Leicester, I managed to get up and back with no problems apart from no being able to put foot down, annoying!!
Anyway, when I got back I decided to do some more research and found the following, at the back of the left bank there is a rubber elbow which is on the vacuum system, this can come off, I checked mine and it had indeed come off, 10 seconds later and no cash outlay problem solved, a fast run down the A21, faster run up the A21 and all good.
I first took the car to my local garage who are not Jag specialists, perhaps a specialist would have known about the problem, heh ho live and learn.
Sorry I meant to post a reply, thanks for the info, I have not got round to sorting the remote locking out yet but that is next up on my list, had a few issues with our new property which has been a complete nightmare.
The whole subject was covered in one of my previous magazine articles entitled "The nineteen day glitch". If you go to the X350 Engine Section of this site you will find my post which also deals with the problem.
What occurs with time and mileage is this. The supercharger by-pass duct flap is worked by an actuator which is a capsule with a diaphragm in the centre. On one side of the diaphragm, vacuum is applied. The vac is taken from the supercharger elbow stub pipe BELOW the throttle body. At idle, full vac is applied to the actuator which opens the flap and prevents the supercharger pressurizing the engine.
A similar stub pipe comes off the pressure manifold above the supercharger and pressurized air comes from that pipe. That links to the other side of the actuator diaphragm and the air pressure generated when the engine is above idle speed, closes the by-pass flap and allows full charger pressure to be applied to the engine.
The stub pipes on the pressure manifold and the supercharger inlet elbow are brass outlet tubes of 3mm/1/8" diameter. Onto those stubs goes rubber 1/8" ID flexi pipes which link to stub pipes on the actuator. As said, one pipe goes to one side of the diaphragm and the other goes to the other side of the diaphragm. Dependent on engine speed, either pressure or vacuum will predominate. So as the engine runs from anything between idle and full throttle, a differential of vac or pressure will be present.
The problem with the rubber 1/8" flexi pipes is that they rot and split with time and mileage. Mine had disintegrated come 80k miles and around fifteen years on the road. The pipes are no big deal cost wise. about £8 from Jaguar in one long length. Better in my opinion is the 1/8 ID pipe sold by Halfords. This is thicker walled and feels of more substantial construction.
Changing those pipes is not so easy. Removing the air inlet trunking to reveal the throttle body is the first stage. Then the fun starts as space around the throttle on a X350R is tight to say the least. You have to get to the pipes on the actuator. That is not so easy. Doing one pipe at a time, you have to trace it back under the throttle and pull it out. You then have to replace the old pipe with new. The operation is repeated for the other pipe. I`d say it would be quicker and easier to remove the throttle body and gain better working space for this job. If the throttle is removed, take the opportunity to clean off the mass of crank case breather gunk that will have accumulated. Get a new throttle body gasket BEFORE you start throttle removal. This is one of the crush type gaskets which needs replacing each time the throttle is removed.
That`s about it for those pipes. Accept they rot and fall off the stub pipes. Replacement is a common job.
I must look on the Viper Performance site and see if they market 1/8" silicon pipe. If that were available, that would make future pipe changing un-necessary.
I thought I had the locking problem sorted but alas no, I changed the drivers door module from the very helpful people at Autoreserveparts,
I received one door module and fitted it and was able to program the keys (2) Great, it worked, no it didn't !!! .
The car locks locked and then would not unlock, I pushed the key into the barrel and then removed it and the car unlocked with the fob, the boot unlocked and I thought great, I then locked the car after closing the boot and again the car would not unlock, unlock with the car and the alarm went off, sat in the drivers seat, key in key out and doors unlocked with fob, locked doors with fob tried to unlock with fob, no good!!
Now the keys will not work at all and will no program to the car, so all the way back to the beginning with a car I cannot program the keys to !!! HELP.
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