topped up the engine with water and took it for a blast last night (about 8pm nice and cool outside, not hot), hasnt been driven for almost 2 months. got a problem, symptoms:

 

my speedo isnt working, neither is the trip counter or odometer. my power steering stops working after about 2 minutes, but if i restart the car it comes back only to stop working again. Hicas light comes on after 5-10 minutes.

 

performance was variable too, sometimes it would accelerate as normal, sometimes a little sluggish, sometimes it wouldnt kick down, i think it might also have been jumping in and out of safety boost cos there was a very noticeable difference when foot to the floor.

 

any ideas?

id gues speed sensor, speedo and trip/odometer is electric so probably will get its signal form the speed sensor. The hicas will be trying to use the same signal so when it doesnt see anything it'l flag up a fault. Auto box will probably be using the signal too. its probably a bad connection from it sitting so long.

got the same problem on mine. needs a new speed sensor which will be done as soon as I can get her back into the garage.

Yup will be speed sensor or the wiring.