Does any one know if the rear sensor heater relay is part of the front fuse box assy located at the rt frt of the eng compartment, on a 2004 xj8 4.2 l non s/c
It seems relays # R9-R14 are part of the inner circiut board of the frt fuse box? Any help would be greatly appreciated...

Good question, I have 1 repair doc telling me R12 is the HO2S relay, I have another doc telling me R12 is the Throttle Motor Relay. Cant seem to find accurate information on where the the HO2S relay is located.

The Jaguar Workshop Manual says R12,located in the Front Power Distribution Fuse Box and hidden with the other non-serviceable PCB relays under that vented cover.

Thank you.