So, after 36,000 miles of happy motoring, I have my first fault, well technically 2 at the same time.

First, the spigot on my radiator top hose decided to disintegrate and give my engine a steam clean. Once I'd told the main dealer where to go, when they insisted I needed 3 rubber hoses at a cost of £535 inc VAT, Maltings to the rescue - £59 delivered for a genuine part.

I had noticed around about the same time that I also had no heating anywhere in the car, and only air con. I was hoping it was to do with the loss of coolant, but i repaired it today and vacuum filled and still the same.

There are no codes showing on diagnostics.

From the reading I've done, this leads me to think it's likely my FBH change over valve inside the driver wheel arch.

Could anyone help me verify?

Help with the the part number would also be great (looks like it's LR040731). 2015 Range Rover Autobiography 4.4 SDV8

Last edited by garyRR on 24th May 2025 5:42am. Edited 1 time in total

It'll be the diverter valve attached below the FBH. It's in the wheelarch on the 322. Easy fix but I'd buy a genuine item as people have had issues with aftermarket items. L405 SV Autobiography LWB SDV8, finished in Aston Martin China Grey by ETO division.