Re: What is this light?
is this a 3sgte MR2T ?
Is the intercooler the original one or a decent one?
Is the fan, the original one or a bigger one ?
If not, may be worth upgrading...just because Aus summer is way hotter than Japan.
Can you usually hear the fan ? If so, what about when the light is on?
Stock there is a temp sensor attached to the lid, which may be broken (would not turn n the light though)
Then there is a relay for the fan, which is more likely to trigger an error, but even that is doubtful.
Most importantly the fan goes round when the engine is hot.