HI Guys i purchased my First Range rover evoque back in feb 2017 i have since encountered the dreaded 3 amigos light, No speedo, No powersteering, and this morning the park brake fault has come on.

I have done EVERYTHING the forums have told me and nothing has worked....
Tone rings checked
Speed sensor changed
Battery tested
brake fluid checked
brake lights/tailgate lights changed

the only thing left do is perhaps change the park brake switch..... but before i do this i have already spent in excess of £500, The diagnostics came up with fault code U0415 Im i just fighting a lost battle and should i just take it to range rover to fix- something which i begrudge doing as they are so incompetent

please any advice would help
thanks guys