Land Rover Repair: 02 Discovery, head gasket, autologic

Question
John-
I've 2 questions for you, 1)the ABS, TC and HDC lights are illuminated on my Disco. I noticed you mentioned in another answer that an ABS modulator may be the fix, if I had the codes read, would it show that to be the problem?
2) my temp spiked this am when (temp here -2)I had the thermostat replaced 2000 miles ago and up until this am, have had no problems, what should I check?
Thanks,
Don

Answer
Well, you might need a modulator, but actually sensor and hub problems are more common.  Find a shop with an Autologic or T4 (we use both at Robison Service) and see what the faults say.

As to the temp spiking. . . assuming you got all the air out and it was properly filled, that probably suggests a head gasket or block failure coming on.  There is a longer article on that on the Robison Service website, under service > land rover > advice