Clive Hunt

Does anyone know where the TCU battery is and how to access it for an x351?

SOS SYSTEM LIMITED FUNCTIONALITY I am informed that the TCU battery needs replacing on my XJ x351. Does anyone know where it is located please?

Dribbling….a sure sign of old age…

Hi All, I have a black Jaguar XJ (x351- 2016) Portfolio. The C-Pillar external trim covers have faded to almost a dull matt dark grey. does anyone know why they have gone like this and where I can get some new ones? Many thanks, Clive

Not sure

How Serious is the Code? The problems stemming from a P0781 OBD2 trouble code typically start out small, then they can escalate very quickly as the damage progresses. Symptoms Symptoms of a P0781 include: Check engine light Hard or erratic shifts Slipping between 1st and 2nd gears Complete failure to complete the 1-2 shift Reduced fuel economy Overheating Limp Mode Causes Low transmission fluid Dirty transmission fluid / filter Frayed wiring / damaged connectors Failed 1-2 shift solenoid Failed transmission pump Pressure blockage Valve body issue TCM or ECU failure

Alex, An excellent article and one I am sure those without TPMS fitted will fancy a go at. All we need now is a genius like you to come up with how to upgrade from 3G to 4G…. Thanks!

Realistically you should expect to get 35-40mpg and this is, as always, depending on your driving style.

P.S. try this site: https://www.desperateseller.co.uk/cheap-cars/jaguar/xf/under/5000

In my opinion you could, for that money, do better than a Luxury model. Search a little harder and find at least a Premium Luxury model or even the Portfolio. A later model would also be better and if you can stretch to it get a face lift model as the software and displays are far better. Good ones are about and going cheap, between 5-10k. I know this is slightly over your budget but you wont regret it.

This is a common and well known issue and is most likely the butterfly valve that switches from LP Turbo to HP Turbo. The pin corrodes, Its a relatively simple fix and cheap too.

The only advice I would give on this is to get it fitted professionally.

There is a choice to de select this option in the on screen menus. Normally in the Driving Assistance menu.

I don’t but interested in what performance improvements are had.

James, From my experience when my rear light cluster became unserviceable due to water ingress due to a failed seal. I was informed that as the unit is supplied and fitted as a sealed non user serviceable unit then the only option is to buy (I was covered under warranty as there was no evidence of cracks etc) and fit a complete unit. This was done at a main dealer under warranty but it would not have been a cheap (in the region of £250-300) part. Sorry for the dour reply. Maybe you could get the parts required from a breakers? Cheers, Clive Hunt