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Hi Paul, good for you. The life span of a battery in a Modern XK is around 5 years with a good proactive maintenance call to change the battery when it gets to that 5 year mark. It's amazing just how many faults the Modern XK can throw up simply because the battery is on the wane. In these cars, the ability to start the car is not a good indicator that the battery is fit for further service as the electronics that make this car work are simply very sensitive to low voltage. The takeaway lesson should be to have the car on a Smart Charger - Ring Automotive or C-Tek - when leaving the car idle for longer periods. In my own case, if my car is going to be standing for more than a couple of days, I connect up my Ring Automotive RSC612 Smart Charger to the remote charging posts in the boot. The RSC612 will also work on vehicles with an AGM battery for Stop/Start technology. Happy motoring. N6 JMX

Lower the window by 11". Remove the door card and sticky foam, cut thru the flexible glue. Loosen the two window clamp bolts and remove the glass, always use a suction cup to hold the glass. Remove the speaker box then disconnect the connectors from the door lock and window motor - access the window connector via the port in the door. Unbolt and remove the window slider frame. I have removed the window motor and gearbox but it is not strictly needed, using T25 remove the DC motor and worm drive. Clean the shaft and apply a mid to heavy grease. The light oil used by Jaguar dries and there is metal contact, greatly slowing the DC motor. With that done replace, paying attention to the brush contacts. Re assembly is a reverse of the procedure. With the glass now in keep the window bolts loose and close the window fully, now tighten the glass clamps. Result: one rejuvenated window motor.

...and my pair.... I've had the Sportbrake for 6 years and the X-Type for 12 months. It still has under 27k on the clock, serviced every 12 months and an interior like new. It even had the previous owners leather driving gloves in the glove box along with a bag of Werthers 🙂 It now has new sills and is fully Lanoguarded underneath. Failed 2 MOTs in its life, once for headlight aim and once for sills in 2017. Currently working on the original wheels but got some refurbed X-Triple 5 on at the moment with Goodyear Vector 3 all seasons.