Christie365

How did you get on in the end? Having the same problem.

Glad to hear you have heat again. With that core you bought, did you have to buy anything extra like the foam or o-rings? Or did it come with everything you needed for the job.

A step to video would have been great!! So the first mechanic I asked said he’s done a few and not interested in tackling it as it’s just himself and can be a bit of a nightmare apparently. He said it’s due to the silica bag rupturing and blocking the core. Now, I have read about that and aware of it but I don’t think my car has a silica bag? Did yours Squish? Did any contaminants come out when you flushed yours?

Thanks for the prompt response! I'm not sure if they did run any diagnostics on the actuators if I'm honest, didn't get a chance to speak directly to the mechanic. I appreciated your in-depth instructions you posted and was thinking about trying to replace it myself, but I'm not much of a mechanic so might see about another garage replacing the core. Getting increasingly frustrated with having no heat, this morning the inside of the windscreen was frozen! I thought my heat was weak last winter but thought nothing of it, until this winter when I've had none.

Hi Josh, just wondering what model your car is? I've got a 2016 A4 B9 2.0 tdi with heat problems and I'm leaning towards trying to flush the heater core first. The garage reckons the heater matrix needs renewed and quoting £330 for the part and 5-8 hours labour. Hoping a flush might do the trick. Glad you got yours sorted!