I thought the torq vectoring on shawd is only when you put gas on it. But when I corner really hard without pressing the gas, I saw my MID also showing torq vectoring is working (like more bars on one side of the rear wheel)...

Thoughts?

 

That's odd, I assumed the same thing also.

 

I also believe that is the case. It should only happen when you hit the gas. As if you coast, the MID should not display any bars on any wheels.

 

try it again, and see if it happens.. is this a one time thing or does it happen often?

 

It happens all the time on my 2011.
I'm wondering what is the FEED to the MID. Is the graphical indicator based on the actual system response or just an emulation from the sensor.

If you don't mind, try it yourself, I'm pretty sure you will see the same thing on the MID.

 

Does the VSA light flash for like split second or longer at any time while this is happening?

I believe the remaining momentum (coasting) on the front tires can be shifted electronically, either independently by ABS or possibly even sensory input to the electromagnetic clutches and then the differential would vector as usual. A VSA indication might give us some insight as to what is going on.

It's not very common but there is sort of a pre-stability assist mode that functions for those grey areas when you may need the function of SH but aren't on the gas for it to function as best intended.

I don't think that is just the MID in relation to the steering sensor, I have played around with mine a bit and it does seem to correspond at least somewhat correctly to what is going on with the system but maybe not, who knows?

 

if your not on the gas, your not getting power to the wheels, so its impossible....

 

maybe it just slows down other wheels and leaves the wheel/s with traction running; and the dash displays the power? idk im just speculating lol

 

Seeing its electronic it may leave them in a predetermined amount due to speed and steering angle (and other variables) incase you get back on the power

 

There is always some torque going to the wheels. It is simply showing the bias percentage as opposed to power output.

 

if your not on the gas, your engine braking.....your not getting power to the wheels....

 

Just some additional thoughts. There is throttle modulation in the VSA, it can both cut the throttle as well as apply it (assuming not much more than a blip). Also, the clutches (or either one) may still engage electronically and have an overdrive affect on the wheel despite the absence of applied torque because the mechanics are all still engaged, unless you're in nuetral. Probably doesn't serve much of a functional purpose but it might be enough to trigger the MID.

 

I'm also along the same line of thoughts. When the driver let go the gas pedal while going through a turn, the PCM doesn't cut power from the engine abruptly (remember Drive-by-wire throttle) so as to prevent any dangerous situation of drop-throttle oversteering from occurring. Watch the needle on the rpm gauge.

Under the above case, power reduction is tapered during cornering, unless the driver stomps on the brake pedal then all engine power is cut at once.

 

Put the car in neutral and roll through the corner at speed. What happens?

It's TORQUE vectoring; no torque, no vectoring.

 

I heard the new xDrive could do this without gassing... will google to find more detail when I have time.

 

First time poster long time lurker... Was intrigued by your question, so I tried it in my 2012 TL (6MT); in neutral (shifting out of a gear) no torque vectoring through a corner. In a gear but out of the gas (only idling engine) torque vectoring.

I would think it would be similar (although a bit more complicated) in an automatic. The transmission doesn't shift into neutral, it just puts you in the right gear and idles around the corner when you are out of the gas, but some power is still going to the wheels, similar to when it downshifts on hard braking to allow "engine brake."