I seem to have the same problem. In the last 2 months or so when I hit the brake suddenly I saw the traction control light lit on the dash broadfor a second and goes off. I only saw that a couple of times. In the last few days I noticed that when I start my car I see the "Traction Overheat" in the message center which goes away whenthe engine is on. I didn't notice any message while driving like the one I got inbefore.I checked the break fluid and it was on min so I tapped it to max now hoping that could be the problem. I am having an impeding problem in the works? Any suggestions? Thanks.

 

Yeah, you found the one drawback with hydro-assist brakes... even so it's the upgrade I'm going to do on my Disco soon, the bloody vac assist isn't even enough to lock up the wheels under hard braking on a good surface.