So I have 2014 Rex, and I’m led to believe that they suffer with Rex problems more so than the newer Rex’s, so it will go into emissions mode 8 times out of 10 and once it’s running I can Rev it up and down till I get bored, engine bay fan runs well too, replaced the fuel pump fuse with a solid...
Yes the relay is the one on the right (the left one is the ventilation fan in the engine compartment) you can try swapping them over, pain in the a$$ getting to the relays
I have a similar fault, I can get it to go into emissions mode and will sit there happily, I can also use the pedal to increase/decrease the revs, but if I drive off it with fail 9 times out of 10, I’ve replaced the fuel pump relay just incase with a solid state one with led so I can see it...