ords

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.

Is it doing many regens? Could be a DPF problem.

What's the engine size?

Faulty ABS?

It should be throwing up a fault code. You need to get that read.

You could try this first.

Suggest you post this in the mk2 section

You can download a 2019 manual here. https://www.startmycar.com/gb/skoda/octavia/info/manuals/2019 On page or section 112 under "vehicle driving mode" it shows the modes being set thru the infotainment screen

You're the pathetic one. Child locks have been mechanical for as long as I can remember. It used to be a little lever. I guess requiring the key to operate it prevents it being knocked accidently into the unlocked position.

My SE spec has the above

We need to know which system you have and current software version.