Smart ForTwo 450 flashing dash fuel and temperature lights, investigation.

This isnt the only reason you would get a single dash and flashing lights, but it is one I experienced.
I tested this after i figured this out with several different USBC equipped phones (Pixel 6 Pro, Pixel 2XL, Oneplus), It makes sense as they are OTG ports that allow you to power and conenct a USB drive, headphone or similar.

[@Chevy_90]

I have this problem. Key out and everything is glowing on dash. I dont see fuel and temperature

[@lyk1gr]

Why can't you just explain the problem and enough with the nonsense talking. What's causing it how to solve it. I'm in my car right now and this happened and you just talk nonsense.

[@MarcLaneAus]

It was the USB charger in the cigarette lighter being connected to the phone, that would cause this to happen.

[@lyk1gr]

@@MarcLaneAus sorry for whatever i said, i was anxious and at the time it happened, scared etc

[@lyk1gr]

@@MarcLaneAus I removed it but no change, the car's now at the mechanic :/

[@MarcLaneAus]

​@@lyk1grthe early 2003-2007 have a common issue with the main fuse box, where over years they can get invisible cracks in the solder, there are people who will resolder them to bring them back to life. Otherwise it could just be fuse 26,27,18, 30 or 2 in the secondary fuse box depending on the model.

[@ruicosta4160]

Any answers, have the same issue