Hi all,

recently purchased an 8 GSR and have been happy with it, did a bit of digging through the history and spoke to the tuner on the printout who tells me I can switch maps on the intercooler spray switch, or should be able to at least.

I have read read a few threads on this so forgive me if I’m in the wrong place but my problem seems more specific.

Holding auto apparently engages high boost map, green light should appear on dash.
No green light.
I have checked the fuses under the steering wheel, taken the switch out and cleaned it, all that is left to do is change the bulb and see if that’s why it doesn’t light up but surely the map should still activate without the bulb working? Please note the spray function works when pressing manual so I’m a bit stumped. Is there a relay I’m missing? Is the switch dead? I’m led to believe auto works via the ecu so could it be something as simple as it needs more water in to think it can actually do what I’m asking? Any help appreciated thanks