ords

Get the battery and alternator checked out first. How old is the battery?

What happens if you let the revs drop to idling speed?

After a long run, can you start the car or is the battery flat?

Even my lowly SE has them. Controlled by the mirror switch.

https://fuse-box.info/skoda/skoda-octavia-mk3-5e-2017-2018-fuse-box-diagram There is a table here telling you the amps dependant on the colour of the fuse.

This is the exact same battery I have. Original battery and showing no signs of giving up, altho having said that now🙂 S/S used all the time.

How old it the battery? Might be worth getting it checked out.

Try this first.

Could just be the cap not sealing properly.

Snap On reported a faulty injector? I'd get a printout of the report.

I'd be looking for a 2nd opinion and a detailed report. Why can't they fit a new pump?

Mine all original at 65K. No signs of rust at all.

Was it coded and is it an EFB or AGM?

Probably too late now, but why didn't you get a charge test done first? Has the new battery been coded into the system so it knows there is a new battery i

.

Youtube has a few videos

I don't know about any fault codes.

This was covered a few days ago. With all the doors locked hold down the boot only button for a few seconds and the boot should "pop" If it does, then you know the fuse is ok and the switch in the lock is probably at fault.

In first gear and clutch depressed, can you start the engine or does it jump forward?

Try this first.

What engine and model do you have?

Is it an EFB or AGM battery?

What engine do you have?