Blong91 said:
@freddofrog, this is the 2.4. Hazards won't come on at all
@goodluckmonkey, is that the fuse which is in its own tiny fusebox to the left of the main under bonnet one? I checked every one I could find.
ahh good, it's same as mine then (you have 2.0 under your avatar, not that it matters much)
but the main fuse is not where you describe, the main fuse is in the picture below (click picture to enlarge it). The main fuse is the long black thing above the "Relay for aircon fan" with "100" and "70" written upside-down on the fuse in white
To remove the main fuse you have to unscrew the 2 "bronze" round-head screws and un-clip the fuse at the sides while pulling it up.
I've just been out to my car and removed that main fuse. With it removed there is no power anywhere in the car, but, if you press the hazard-warning button on the dash, you can hear a fast clicking noise from the under-dash fuse-box. This clicking is coming from the MICU which is behind the uder-dash fuse-box. The circuit diagram shows that the hazard-warning relays are grounded via the MICU, so when that main 100 Amp fuse is removed, the MICU doesn't work, so the hazard-warnings don't actually work, although the un-powered MICU is attempting to get relay current to ground. The more I look at Honda electrics, the less impressed I am.
So, check that main fuse, and also listen for a fast clicking when you press the hazard-warning button. Also check the battery voltage by measuring from chassis to battery +ve, do not check across the battery terminals.