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If the paint has bubbled, then that could suggest they’ve been repainted by a previous owner with an unsuitable paint - i.e. one that’s not able to withstand high temperatures as the calipers will get hot as a result of brakes usage. Assuming they have been repainted, then the calipers might not have been prepped prior to repainting.

I don’t think your warranty will cover it. Assuming your warranty is VW’s Approved Used warranty, then it’s a mechanical and electrical warranty covering sudden and unexpected failure of mechanical and electrical components. Paintwork is part of the ‘bodywork’ definition and bodywork is a specific exclusion.

I’d suggest you use a high temperature paint when repainting them or a paint that’s specifically designed to be used on brake calipers. It might also be worth watching a few ‘how to’ YouTube videos on the best way to prep and paint them.

Testing the water and looking to sell my car, currently sitting at 89000 miles, fully service history.

List of MODS

Milltek Non Resonated Cat-Back exhaust “edition 35”, Forge PCV Delete, APR Stage 1 Remap & APR DSG Remap, Volkswagen raging intake, Volkswagen racingline sport springs. Audi R8 Coil Pack, GFB DV+

Just caught up with this thread. Sounds like a bad experience all round, always annoying when you have a no-fault accident. The initial accident was just "one of those things" unfortunately, but the 'insurance approved body shop' clearly made it worse. Not the first time I have heard such stories of terrible communication and poor workmanship from approved body shops. I would always push for at least two approved centres, including the one used my the local main VW dealer. Then research both online if you have no info on them. Once you go insurance route, press for the one with the best reputation as it doesn't then matter to you whether the final bill is £3 or £4k. Glad you finally got it sorted anyway.

The fluid unless it's cold where you keep it won't be far off 20 degrees when you refill.

Temp is unimportant when relearning as all your doing is resetting the parameters so it knows, for example, 0.5Amps supplied to the pump produces 1 bar of pressure,

The temp measurement is only because the fluid expands when warm, so really needs to be checked then.

I did mine with the front wheels in the air, and just let the engine idle for a couple of mins, doesn't take long to warm up and only had to add about 50ml when checked.