[strohw]

I've been trying to figure out the differences between AdSR/ASPC/Low Friction Launch etc and what should be enabled in certain citations (snow, off-road, mud, sand, etc) :

AdSR - Adaptive Surface Response - option with Adaptive Dynamics Package (unless you have some high end trims). It replaces rain/ice snow option in configurable dynamic mode. Works at all speeds and adjusts engine and brake settings in "challenging surfaces".

ASPC - All Surface progress Control - available in all trims by default. Low speed cruise control. It helps to "drive in challenging conditions".

Low Friction Launch - helps to further enhance low speed maneuvering and pulling away from a standstill in adverse conditions. It works better when AdSR is enabled.

There is also DSC, TrackDSC and Torque Vectoring which also have to be aware somehow of the above systems. All of this is little confusing. Maybe somebody can add some details to the above or point to more detailed specifications of those systems.

Some questions which cam to my mind after reading the marketing descriptions of those features:

AdSR/ASPC - from where the systems takes inputs? Is he using the same sensors as the ones adjusting the torque between the wheels (Intelligent Drive Line Dynamics?)

What should be used low speed driving on slippery conditions? Why do we need ASPC while having AdSR? I would guess that take inputs from the same sensors and do similar things (adjusting torque to the wheels with traction).

Is there a situation when both ASPC and AdSR should be turned on?

Why do even need Low Speed Launch having AdSR and ASPC. I am wondering if multiple systems works at the same time (I assume they all should do similar things like adjust brakes, engine, torque) which one takes precedence. I hope that somebody has some more inside info and can clarify those options.

ASPC is low speed cruise control designed for off-road or similar environments. ADSR is designed for traction limited situations like snow, rain, loose road conditions, etc. Low friction launch puts the system into the most conservative state it can be in for very limited traction from a stand still.

One of the things I've seen in YouTube videos etc, is that AdSR/LFL when engaged really slows your takeoff speed in slippery conditions. It simply will not allow any wheel spin, and thus you may crawl on a patch of Ice or glass smooth snow at a stop sign with it engaged to move out, until you gain some speed and momentum. That is simply not desirable for me personally, that's why I skipped that package. I don't frankly care if I spin a little at slippery stop signs etc, but I don't like the fact of the software controlling the launch. If I have AWD and it is engaged, I can manage everything else.


Please feel free to correct me if I am not understanding AdSR/LFL properly....

The issue with skipping ADSR is that comes with the AD package which gives you the electric dampers in general. That package is more then just the ADSR option offered in the drive modes.