ords

Have you tried the different drive modes? How does it react when reverse is selected?

Suggest you post this in the Fabia section as your profile says you have a Fabia.

If it's a diesel, then this thread is for you.

On the last page a charge cooler is mentioned.

Have to ask, why were you covering the sign? Not obliged to answer🤐

What engine?

What engine? Manual or auto?

Mine only has basic functions, If memory serves me right, the person who fitted my replacement windscreen told me it is a humidity sensor

Picture?

Manual or auto?

Is the ventilation system working as it should? Try this as well. https://www.youtube.com/watch?v=MRa6c9UfyEs

Can you get it scanned for fault codes, although I'd have expected the 2 garages to have done that?

This is also from the link you provided. Colour coding of fuses Fuse colour Maximum amperage light brown 5 dark brown 7.5 red 10 blue 15 yellow/blue 20 white 25 green/pink 30 orange/green 40 red 50

Your profile says Fabia mk1

You're doing nothing wrong. They should go on when unlocking, off when starting the engine, on when switching off the engine and removing the key and off when locking. There are some threads about the lights. A common cause for faults seems to be corrosion or similar on the circuit board in the front interior light fitting. I've never noticed any interior light settings in the options. The switch only has three positions. Off, (including the rear interior light), door operated and manually turned on.

Very unlucky, mine's been an absolute peach.

Turn the ventilation system off and see if the noise is still there.

Suggest you post this in the Fabia section.

Mine has Eco

Get it agreed by the garage doing the job.

What gearbox mode have you selected?

I'd get in writing that the products you have supplied are are correct and if anything goes wrong they can't say the wrong products were supplied.