Let's not confuse TC with ASC. ASC you turn off with the switch, TC you do not. Unless you've had a special switch fitted by a clever auto electrician. ASC will slow you down but there are less reports of TC doing that and some of those are suspect given ongoing confusion between ASC and TC.
Whether a centre diff is locked or not wouldn't seem to me to have anything to do with whether a particular axle is locked or not? Surely it just means a fixed amount of power is then being sent to the rear and the front and whatever happens with the rear wheels (as between themselves if you know what I mean) is down to a separate question of whether there is a locker/LSD etc?
It does seem to have been an odd choice to take out the LSD at the top of the range but I suppose they took the view that on road safety was more important than offroad performance. If I'm honest about it I probably use mine offroad less than 5%. Maybe less than 1% event. I doubt that I'm Robinson Crusoe there although I have to ask why I spent all that money on offroad mods with that level of usage.
Presumably ASC etc helps with their safety ratings along with all the airbags and what have you. And then if you're going to go hardcore offroad in the GLXR they let you spec it up with the optional RDL to fill that gap I guess.
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thing 1 and
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