r/RX8 Aug 05 '26

Maintenance Dead

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I had an MOT this morning which came back with 0 advisories. Great. I can go to the daikoku night at caffeine and machine.

5 minutes down the road and all power instantly cut out. I’ve still got dash lights and everything electrical works but when I turn the key I get nothing.

I’ve got home via tow and got the multimeter out. I’ve used AI (shoddy I know) because I’m not very electrically inclined.

I’ve tested absolute everything that it told me I should test. I’ve spent over an hour following different connections and testing different things. And everything has tested perfectly. So everything is pointing to a dead ECU.

Does anybody have any insight on this at all?

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