Timothy Smyth

Just changed oil in box but now PSD pump running all the time took fuse and relay out but still running have a problem getting wheel of nuts corroded and looking wheel nuts problem how to stop pump running please.

Mrmerlin

disconnect the pump harness in the LR fender well
NOTE you will have to remove the crumbling fender liner for full access

Timothy Smyth

Thank you very much thought that taking fuse and relay out i boot would have done it just go's to so you need Rennlist cheers.

NoVector

If you have trouble getting the fender liner off due to not being able to remove the wheel, it might be uncomfortable, but I think you could access the plug through the rear turn signal. (that’s assuming you have a US version.) I don’t think you can reach the plug from under the car because there’s a heat shield right below the PSD.

FWIW – I’d be very, very careful with the fender liner. The originals crumble like pringle potato chips and cost ~$600 each to replace.

jcorenman

The relay and fuse for the PSD pump are located in the spare tire well, behind a triangular plastic cover-- in the far left corner.
That's probably a lot easier to get to than the pump or pressure switch behind the wheel liner.

NoVector

Ref original post: "took fuse and relay out but still running..."

Timothy Smyth

Hi have removed the fuse and relay and unplugged the Abs ECU still get the pump running all the time.

Mrmerlin

As an aside, it might be prudent to remove the fender liner and bleed, your PSD pump. There’s an online procedure. You may fix it, and it will return proper operation. Then all you need to do is buy a new fender liner.