Hi when the bad weather comes my dashboard lights come on auto +engine light +triangle on my ka car 2014 I have changed everything i can still it's carrying on i have technical guy no luck can help me thanks Paul.
If wet weather is doing it, then check the fuse box under the bonnet, the earth strap off the battery and (potentially) the wiring inside the rubber grommet connecting the boot lid. They should all be dry, clean and not fraying/fretting against each other, in the case of the latter.