Breezy_Pete

Water pump on the end...

What year is your Yeti? Which fuse (number) did you look at? (Owners manuals are sometimes incorrect/out of date). Broken wire(s) inside boot at A-pillar where the door loom plugs into the cabin loom, possibly.

Yep, 507 00, whether on fixed or variable servicing.

My other suspicion would be that the sidelight failed a while back without being noticed, and the headlight is the shuttered, single-bulb type and that has failed.

I have a feeling that I've seen people successfully repairing this component or similar versions from other models. A ribbon cable within it breaks and can be re-connected with some care, I think. One alternative is an offputting £245.50 plus VAT price tag for a new genuine one at a Skoda dealer's parts counter. Not sure what, if anything, is available aftermarket.

No stop/start = no coding required.

If the indicator isn't working as well, I'd think maybe the connector to the left headlamp assembly has come loose?

I think I need to have a tinker with my 9n Polo, currently off the road, to measure those WW and INT connections during the action to see directly what occurs.

A couple of examples, Octy mk2 and Yeti. You participated in both. It's not a Fabia thing. Rear wiper stopped working - Skoda Octavia Mk2 (2004 - 2013) - BRISKODA 2010 yeti rear wiper - Skoda Yeti - BRISKODA I looked up mk4 Octavia as a very recent Skoda, just for interest, same circuit again, seems pretty universal. None of the wires in any of the V12/rear wiper circuits I've seen thus far are labelled CANH or CANL, as CAN wires always are in these diagrams. Anyone know of a Skoda where there is such CAN wiring to a rear wiper motor? If your rear wiper is a CAN node, you should see it on a VCDS autoscan, I would have thought. Got an example?

From recent posts on here, I think car data is no longer offered to private individuals accessing erWin. May only be a UK thing, not sure.

Could also be a coolant leak into exhaust via the EGR cooler, plus an exhaust leak at, perhaps, the flexi joint after the DPF. Again, might only be happening or apparent during a regeneration cycle when everything is so much hotter. Edit: On second thoughts, the exhaust gases going through there are on their way back into the engine, not on their way out, so I think that makes it unlikely to give the symptoms you're seeing. Also, EGR function will be inhibited except at the end of the regen cycle.

A pinhole in a hose close to the DPF would be one possibility. I had a coolant leak once that sprayed a tiny jet onto the exhaust manifold of my mk2 Golf. Dense white smoke coming out of the bonnet edges had me reaching for the fire extinguisher before opening the bonnet to see what was going on. Might be that the hose only gets hot enough and soft enough to leak during regens, making it a bit hard to observe at other times. I guess the heater matrix hoses might go near DPF, not sure what else.

Are you losing any coolant?

Happy to supply any info pertaining to the car that I can look up for you, just message me with VIN or reg.

There is CAN comms in all those cars you mention, but the rear wiper isn't connected to the bus. I promise. Not sure why you believe it is. Show me some evidence that it is, if you believe I'm wrong. Happy to show you circuits showing how it isn't, but fairly sure I've done so a few times before now.

Hi Kamil, welcome to Briskoda.

I've yet to see a circuit diagram for a rear wiper system on a Skoda that is CAN controlled. I don't look at very recent models much, maybe there are some.

Measure for the ignition switched feed between the relevant connector pin and local earth pin when ignition is on, no need for any stalk action. You have just proved the intactness of the other two wires between BCM and washer reservoir because they power the washer pump (front wash with polarity one way, rear wash with it the other way). Those same two wires tee off from the BCM to tell the rear wiper to either do the wash/wipe sequence or the intermittent wiping, depending on stalk position. One may be broken between BCM and tailgate, I guess. Measure each relative to the brown earth wire, while someone tries the various stalk positions. If one of them never goes to 12V, it's likely to be broken.

Does the wash function work on front screen?

Genuine or pattern replacement wiper motor? Should be an ignition switched 12V on one of the four connector pins with something like a black/violet wire (from that fuse 26), then a brown earth wire on one of the other pins. Last two wires will go between 0 and 12V depending on stalk command inputs.

Fuse 26, 10 Amp standard blade fuse. Bottom row (of full size fuses) second from right.

Did you check cabin fuse 10, middle row of miniblades, second in from the end? Neither the rear nor the front wiper motor has any connection to the CAN bus.

You probably have the Climatronic system which uses a transistorised controller instead of the resistor pack.

Did you remove it (the idle emulsion tube) to check the jet at the bottom as well as the air jet at the top?

Zooming way in on your photo, I think the idle one is the one with slots that could allow a screwdriver to unscrew and remove it.