Thanks DP, I'd found that issue reported earlier on t'internet and expected it to be the cause.
But, as said above, the 2011 no longer has the HCV.
I think I've mentioned that turning ion the heating to full does relieve the problem. Tested this again today, it dropped from 120 to about 90. Bu this time I kept driving and it slowly crept up again to about 111 by the time I got home, with the heater still on (not the best day for that test!!)
It passed it's MOT with just one advisory on two tyres so that's a bit of a relief.
So far it's the stat next, for the second time, before doing the expensive pump.
Does anyone know a test for the pump failure?
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