Breezy_Pete

It will be in the instrument cluster coding, I believe. Module 17.

It should be quite difficult to remove from servo, unless you deplete the vacuum by pumping brake pedal a few times first. Suggests the one-way valve may have failed, possibly?

No, internal to each fan motor, the rectangles shown within the fan schematic symbols above.

The fans are wired in parallel with each other, so you should never see just one working unless there is a fault (motor brushes worn or sticking in holder), or a low speed internal resistor failed.

Listen for a hissing sound from deep in the dashboard central area when you switch on A/C. That might suggest refrigerant quantity has reduced due to leakage.

Check cabin fuse 14. It feeds the ECU an ignition switched supply, and the ECU relay coil. Look for loose or corroded contacts, as well as continuity of fuse element.

Don't bother, I think it's somewhere else. I can't understand what these instructions mean, or where the image is, but this is what workshop manual says:

Look under carpet over here (red marking):

Look on the left side under the carpet at the front of where the seat would be. Petrol tank cover is on the right side of the car. Outer, rear wiring is to ABS sensors.

Why not ask the service people that told you that it needs replacing?

Water box is a VW/Skoda term for the section that the windscreen area drains into, often referred to as the scuttle. Perhaps that wire runs within that area.

It would be pretty easy to swap the instrument cluster housing for an uncracked one. Window switch assembly too. Will almost certainly have some problems that are harder to sort than either of those, given its age. As will any 19+ year old car unless previous owner was a DIY enthusiast with good skills.

Wow, that's a while ago. Did it all work out in the end?

Probably normal. Do you know anyone with a similar age Octavia from your country to compare with? I think it's only a requirement to have a 'cruise control active' indication in some markets, so others don't have the lamp.

Fair enough, sounds like you know what you're doing.

Phone cam photos from various angles may reveal info on it somewhere. I certainly wouldn't take it off unless you have a correct one ready to fit on, or fuel will pee out of the tank until empty, I think.

3 Bar fuel system, check that someone hasn't fitted a 4 bar one due to duff info from ECP lookup by reg or similar.

Might be worth checking that the fuel pressure regulator hasn't been replaced with a wrongly rated one during a fuel filter replacement. That can play havoc with the engine ECU's ability to get fuelling ratios right. If you let me know VIN or reg plate I can check what should be fitted, then you can compare with what's stamped on the rear end of the filter assy just in front of rear right (driver's side) wheel.

Use a fully charged battery to get home. Should be easy, and if you have a spare, relatively stress free. Then see if you can remove brushpack/regulator with alt in situ with all your tools available. Brushes may be worn too short, or stuck in holder.

Leave it patched, it'll be fine.

Have a look under the rear seats, looking for a cable that goes through the floor on the left, (UK passenger) side. If you find one, I think you'll find the alarm horn underneath the car below there.

Check for broken wires between passenger front door and A-pillar connectors, also check for corrosion of connector contacts, especially if the rubber boot doesn't seem to be sealing well against the paintwork before you start work. The central area of the instrument cluster has a 'maxidot' information display on some models, but most just have a few warning lights in that area.

If you have the FSIII system, I think the brake caliper will have FS - III stamped into the outer face quite visibly. If you have the larger brakes I think you will have a different caliper with something else marked on it. If you tell me the 17-character vehicle identification number I can look it up directly for you, also.

A new favourite as of today. It's a long listen, but apart from the two product placements within it, is all very worthwhile: (it's about ultra-processed foods)