Is the jaguar XK battery negatively grounded or positively grounded?

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remove any battery box cover. Record the radio code first. Remove the earth terminal from the battery. Connect up the charger --red lead (+) to the positive terminal and the negative(-) to the negative post of the battery

if your xk is a later xk ie xk150 behind the rh front wheel is a ground point which corrodes remake it on the brake pipe bracket or if thats ok try a battery reset ie disconnect wait 2 mins and reconnect if you dont make a clean contact when you connect the battery it can confuse the many modules on these cars

Are you sure the battery is good, just because you charged it doesn't mean it is any good and reached full voltage. I also suggest you disconnect the battery negative cable for 5 minutes to reset the system.

Hi, the battery is at the rear of the trunk/boot compartment, remove the floor panel (lift handle and pull the panel out) then remove the luggage cover 9the soft "blind" that is moved when lowering the roof) this lifts backwards and up. There are four small round "knobs" at each corner or the vertical panel facing you at the rear of the compartment (the rear of the back seats) remove these by unscrewing counterclockwise (they then pull out) the vertical panel will now come free when pulled to reaveal the battery in the top left hand corner, it has security bolts on the front retaining bar and 10mm bolts on both terminals and the right hand safety retainer. (NB the positive terminal is on the right, the negative terminal on the left) I hope this helps, regards, Baz

not sure about this model but i think it could have a cable from the brake pedal to the gearbox and something is wrong with it

been there done that. i connected a set of wires to the battery on another car pulled the center rear seat cover off to expose the fuse panel, poped out a fuse and connected the hot from the other battery to the fuse and the ground from the other car to a grounding bolt right beside and bingo you have power and can pop the trunk.

Trunk, right side , remove trunk floor to expose spare tire then pull panel that covers battery