Hi, I'm being a bit dim and struggling to locate this and would appreciate tips for it's removal

 

I want to pass in an endoscope to look for coolant as I see this has been a slow-leak culprit for others in the past.

 

Thanks in advance!

Found it as per

 

 

 

Sadly, much too small for my endoscope 😞

 

 

It’s the sensor with the green mark on it that allows you to see the charge cooler 

Thanks - my brain is struggling to parse where that is on the engine though!

 

I'll have to have a root around!

 

Take the engine cover off and you can see it. Either needs a deep socket or spanner to remove. Think the spanner was easier 

Ah great, I see it now. Thankyou.

Woohoo (Kinda)

 

My coolant loss issue is now diagnosed as about the least-bad of the remaining possibilities.

 

Finally got around to getting an endoscope inside the charge air cooler (thanks to @T07 for the helpful pics above).

 

I got the engine hot and spent a bit of time on boost - presumably as that drove charge-air into the coolant, pressurising it more than heat-alone, then went in the IAT and saw it fill up before my very eyes...

 

So, at least it's not the EGR Cooler, or a cracked head...

 

Photos below for interest.

 

 

Anyone got any tips or wisdom for getting the Charge Air Cooler replaced?

 

I'm assuming a used one is a false economy?

 

 

I'm losing about half a ml a mile of coolant, so not a huge deal for me to keep pouring it in until the car is next in a garage*. Is it worth hanging on until timing belt and water pump gets done next year dya think?

 

 

 

*Which unless Skoda sort the 23AX update that ****ed up my DSG behaviour swiftly, my family won't set foot in a VAG garage for the rest of my life...

 

 

My coolant is greeny-yellow rather than pink, thanks to the fluoroscein UV dye in there.

 

I opted for a used cooler. New one was around £800 or so. Nowhere could get it other than the dealer. You may have a slightly different version though so may be able to find one cheaper? There was no high pressure Egr on mine, not sure if this was introduced to the Octavia but appears on other revisions of the part from golf’s, tiguans and passats. 

I also now have yellow coolant due to uv dye!