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Having worked most of my life in electrical/electronic engineering, I can confirm there is nothing more frustrating than having to write on the job sheet "NFFAT" - No Fault Found At Test. Over the decades ive had many "Intermittently Intermittent" faults as i call them. Sometimes it's has been a long and extremely annoying process to find the fault and often when i do, i find it's a "Compound Intermittent Fault" - one where two or more problems contribute to not only the intermittent fault but the overall intermittency of it occurring in the first place. I wish you and your autoelectrician luck with finding it, you may have to lose this battle to win the war and come to an arrangement with him whereby he comes to you when it faults to investigate. This isn't just a "Jag thing", it happens to all makes and some are much worse than others! 'Tis the nature of the beast with electrical/electronic systems sadly.

my XF in a nice wooded are on the day i bought it. Then at home after fitting a chin splitter. She looks mean.

Hi Lez. At that age you are probably going to struggle to get decent cover as most are limited to 10 years or 100k after which cover limit and items covered drops substantially. There are some that will go to 12 years and 120k but personally at 10yrs I would be going with your AA option and laying aside a couple of hundred a month in a savings account to "self insure" Good luck John

Hi - after owning Mercedes, BMW`s and lastly a 2016 Range Rover Evoque convertible for 5 yrs decided that I wanted a change so took the plunge & bought a 2016 XFS 3.0 D with 79K miles fully loaded in Italian racing red. Hopefully made the right choice as being nearly 68 want to keep car for many years hopefully with trouble free motoring - drive about 3K miles /yr. Car looks stunning & drives great.

https://www.ebay.co.uk/itm/306346687269?_trksid=p4375194.c102726.m162918 https://www.ebay.co.uk/itm/127169141692?_trksid=p2332490.c101875.m1851 Second link looks to be same wheels but payment in Euros which seems cheaper! Even with the cost of refurb these look the way to go if you want to actually use your new toy and not simply look at it on the drive 🙂 Good luck John

Greetings to all. For the last 17 years I have owned and used a Mercedes Vito van, after retiring this year, the van with 220,00 reliable miles on the clock was part exchanged for a 2019 XF Sportsbrake. The car is great, I am still finding my way with it as it is a far cry from a Vito Van! First long trip tomorrow. Southport to Scotland and back a 500 mile round trip which I am looking forward to.

Thanks for confirming my memory John! Searching the part number on ebay UK, i found these : https://www.ebay.co.uk/itm/157386222514 Probably less than the cost of one metric tyre! Bit of a hike to Brum to pick them up but often people have networks of friends on various fora that can offer a pick up and delivery by passing to various people along the way or there's even Shipley.com. It works out that 225/65/15 tyres are very close to the original size (overall diameter 676mm original, 674mm is diameter of 225/65/15) and i daresay a set of 225/65/15 tyres plus the cost of the UK 15" wheels from ebay would be close to about 2 of the metric tyres without the need in a few years to repeat the hunting exercise.

Hi Paul Personally I would be moving to 15" or 16" as those tyres will simply become less and less safe the older they get, until at some point they will fail........ :( Found this which appears to be the 15" version of your metric wheels. Might be worth a try and see if they will ship to UK.... https://susuperdeals.shop/product/75661006133/?cid=803cf2e9053a846b4d3f76833657f3ff Good luck John

Welcome to the Forum, have a safe trip "North of the Border". N6 JMX

Well I might be premature in updating this thread but... I never did find the parking sensor control module. Looked in boot, behind LH and RH boot trims, under seats, under bonnet, under dashboard etc. All difficult to access with horrible plastic clips etc. Jaguar wiring diagrams didn't help as I found many that covered my year of car and all showed the module in different places - why the need to move it around so much? It's as if the installer changed stuff every day on the production line. However I did notice a small water stain near the junction box (fuse box) rear on the RH side of the boot. I noticed the filler cap water vent pipe was blocked so unblocked it and not had the issue since. Maybe water was somehow getting into the boot and running through the fuse box causing the issue when it rained. Time will tell.

Hi Steven, remove fuses F4 10A, F21 15A and F31 30A, all in the auxiliary junction which is located between the rear seats. Make sure the radio is switched off on the panel first.

Hi just some screen shots of error codes that are on now

Locate and check the headlight earth connection is sound. One light failing is more likely to be an earthing issue than a BCM issue. N6 JMX

Quick google brought up this: Faulty Headlight Assembly Component A bad bulb, ballast, or internal wiring/control module can cause intermittent operation. Start by replacing the bulb and checking the ballast. Wiring Harness Issue Corrosion or damage in the wiring connecting the headlight to the BCM can cause data/power loss. Inspect the full length of the harness for damage. BCM Entering Protection Mode If the BCM detects repeated short circuits, it disables the output to protect itself (U1000-00 code). The short must be repaired, and the BCM may need a specialist software fix or replacement. Failing BCM Unit A failing BCM can cause various erratic electrical issues, including lighting problems. This is often due to water damage or voltage spikes.

Hi all. I have what I consider to be quite a rare Jaguar. Because I can not find many for sale. I have a XF sportbrake AWD 240hp twin turbo 2.0l diesel. I love it. Its huge, massive load area, very comfortable, almost economical ( just over 42mpg) and well equiped for a R-Sport.

Thanks for advice.

Hi Paul, this website may have the information you need or even the tyres; https://www.longstonetyres.co.uk/classic-car-tyres/jaguar/xj40.html

Thanks

Many thanks for the suggestion but doing this is beyond my own skill level! I will let a Jaguar mechanic have a go. Dennis G

Hi Colin, you indicate your problem is with the X-150 model, but your profile descripting infers you have the X-100 model from 2001, need to clarify which model you have the issue with. Before you changed the battery, did you have any need to jump start the car? If yes, then you may have fried the video screen that is the display in the X-150 model. N6 JMX

Hi Thanks for your response. I have had the same issue with either of my keys and I have replaced the batteries in both. I had a new drivers door latch fitted as well as tgd new boot latch. One garage told me it was the gear selector unit, so that was replaced and the problem still exists. It is with an auto electrician at the moment but it starts every time he tries, so no fault appears on the diagnostic……. Soul destroying !

Check the internal contacts are properly connecting within the key fob, they are a bit fragile and easily bent away from the contact face. N6 JMX

Hi Andrew, welcome to the Forum, hope it all goes well for you. In future, you may want to post your questions in the correct area of the Forum. This post is in the X-type area and you want to be posting future requests on the 1999 XK8 in the X-100 section, a bit higher up the page. N6 JMX

Hi Andrew, here is the electrical manual for your car; http://www.jagrepair.com/images/AutoRepairPhotos/jagxk1999.pdf

Finally solved map upgrade issues. Jaguar where excellent 🏆Lloyds jaguar Houghton le spring did themselves proud with a little backwards and forward. Dropped of car 8 courtesy car, washed, hoovered returned by 4 . TCU &IMC update. Now my car is talking and I can update maps and live coverage. Cost was bearable, experience sometimes frustrating but a positive outcome

Thank you for your replies, both helpful and appreciated. Is this what I'm after ? Beyond fault monitoring and seat module calibrating, what else can it do (or is that a silly question) Thanks again

N6 jmx Thank you for your help, the main rear light is my problem, I’m sorry I didn’t make that clear. I forgot the light on the boot that joins with rear light when shut. I have seen inside a rear light on YouTube and they are individual led’s soldered to a different thin circuit plate. They can be removed individually. If I can’t get details of the correct led I will have to open the light I think. Once again thank you for taking the time to help. Andy

Hi Andy, not sure what you are after here as the LED elements for the rear lights are not available as individual lamps, but as a feature part of the rear lamp cluster. Go to the Jaguar Classic Parts website and you will be able to see which part numbers you ned to be looking for. Note that JLR Classic are not yet back to selling online spares following the cyber attack. The link below should take you to the correct page, but as you will see, the parts are VIN specific. Rear Lights | Jaguar Land Rover Classic Parts N6 JMX

Hi Alan, unfortunate damage to your sump, but becoming more prevalent as our roads network continues to deteriorate - and its only going to be getting worse. For a suitable replacement engine, speak to the good folks at Auto Reserve or Eurojag, easily found by an online search, but if you have trouble finding them, come back here for more help. N6 JMX

When you pay others to perform a service, no matter what that service is, you expect a certain level of professionalism. Leaving oil out of an engine after an oil/filter change is not just lack of professianalism but careless too as they no doubt had to park the car in the Service car park ready for collection. I'm sure the sound it made wouldn't have been nice (imagine a bag of spanners in a metal bin inside a tumble dryer!) so not only should the mechanic who did the job have noticed but all his colleagues too. I'm no legal expert but would certainly think you have a very strong case for negligence on this and therefore the dealer should fit a reconditioned engine at their cost IMHO. Also having paid for that professionalism, you should not need to check the oil before leaving - that's what you have just paid for!

I use the iCarSoft scanner and have to say in all the many scan tools I have owned over the years for professional garage use, now I am retired from the trade I bought an iCarSoft and quite honestly don't need any other scanner in the future. It is fully updatable and quick and intuitive to use (even for a beginner) but what is most important to me is the system reset and programming features it has built in - it is much more than a code reader for sure. I got the ten manufacturers setup which only costs a few more pounds than the one manufacturer licence. Handy if you wish to scan family or friends cars.

Hi Lez, I agree with John above. My own Jaguar has been under warranty from new - Jaguar extended - and it is definitely a "peace of mind" thing. I reckon had I followed John's advice, I would be quid's in by now, but once you are in the warranty cycle, it is very difficult to step off it. N6 JMX

Thank you for the info LairdScooby it is much appereciated! I did get a quote from Warranty Wise and may continue with it when the dealership one ends. I will check out the others 🙂 Are they actually worth it? or would any one know if i would i be better with a AA garage costs added to breakdown cover given the age of the car?

My very first love of cars was when i saw a bright red Mk2 with red interior. I was probably six years old and my grandfather told me to stand away from the car as the owner approached. No word of a lie, he was a proper spiv with pinstripe suit and he told my grandfather that it was okay for me to sit behind the wheel. First impressions were the smell of the leather and wood, and then complete awe from seeing all the gauges and switches on the dashboard. That was it, smitten at first sight, then promptly requested a model kit from my grandfather of a bright red Mk2 Jaguar. That's how memories are made!

!Removed! hell, your fault? an insult if you ask me...yeh i would speak to dealer principal, if they won't even entertain the idea, legal action full on.

The onus is on them to carry out the work you are paying them for with an appropriate level of skill and professionalism. I would first ask to speak to the dealer principal / head of business, if you don't have any success, trading standards / consult a solicitor.

Hi Les, I think I would consult a suitable petrolhead solicitor as the comment by the garage is just plain dumb - no-one dips their oil or checks the level of the work completed by their dealer ahead of driving away. Hatfield's are trying it on. In the past, I have had an oil leak on my drive after the dealer returned my car without having replaced the washer / seal on the sump plug - their fault and fully rectified, including a full underbody clean-up where the oil had been spraying the underside of the car on the drive from the dealer to home. N6 JMX

My heartfelt sympathy, having just cracked my sump traversing a ramped pedestrian crossing. Trashed the engine by not pulling over when the oil warning light lit up. Only 35k miles in 10 years. Anyone know of a trustworthy firm who would put in a replacement engine - refurbished, salvaged or new.