
I had noticed recently that the a/c seemed to be pretty inefective and when stationary I thought the pump only seemed to cut in very very briefly then cut straight out. This had suggested to me that the cooling fan wasn't being switched on by the system but I hadn't got round to looking at it and since the engine temps had never strayed above mid-way, I assumed it was an a/c control related fault rather than a cooling fan fault (so hadn't seemed urgent).
Anyway, a couple of weeks ago I was sat waiting in a carp park on a baking hot day, with the a/c on while I looked around on my phone for best deal on something I was intending to buy. I was woken from my phone-daze by the car beeping at me and looked up expecting to see a low fuel message... Instead it was engine coolant temp too hot. Checked the gauge and yep - had just popped into the red

Switched the engine off and it dropped pretty quickly by enough to lower it off the red, restarted and moved off. No puddles behind so it hadn't boiled over/lost coolant. Drove at low engine revs in clear air and the temp started to come down sooner so... yep, looked like cooling fan knackered.
This weekend I went out and checked things over...
I didn't expect it to be the relays/wiring (known trouble spot) because I had looked all that over when I had the bumper off last year to fit the HID headlamps.
First things first - fuse. Yep, MF1 50 A fuse blown.
Second - Check the cooling fan and... Seized.
I could force it over, then I would get about 30 degrees free run and it would seize again. It's not catching on the housing, it's the bearing/motor part that's mechanically seizing.
A quick look round online shows this isn't an unknown phenomenon, but I couldn't turn a replacement nearby and the cheapest used fan (of the correct type) I could find was £24 delivered.
eurocarparts have a 66% sale on this weekend, so... means a new one from them is just under £60.
The extra £35 is easily worth it IMO, given there's no knowing how long another used fan will last (given reputation that they do fail - which is pretty p**s-poor imo on a car that's only 16 years old, but I guess that's the world of modern carp parts for you...) and that it's a bumper off to replace.
Gone for that, just got to wait for it to be delivered now.