07 LR3 seems to be braking while accelerating

[Rubber Cow]

What condition are your tires in?
Are they all the same tread depth?
I suspect, as others have mentioned, that the ABS pulsing is the grinding noise. You'll hear this noise when the DSC fires or the HDC is on. I'd check every part of the suspension and drive train from the tires up.

 

[Rmeekdesign]

What condition are your tires in?
Are they all the same tread depth?
I suspect, as others have mentioned, that the ABS pulsing is the grinding noise. You'll hear this noise when the DSC fires or the HDC is on. I'd check every part of the suspension and drive train from the tires up.

We just put all brand new tires on it about a month ago. On another forum, steering angle and wheel speed calibrations have been suggested. Reverse tail light and brake light switch have been replaced, which have not fixed the issue. If calibrations don’t do it, will check further into suspension and Drive train. Thank you!

 

[Houm_WA]

Those items (steering angle sensor, wheel speed sensor, tail lights, brake lights) can definitely cause the suspension faults you refer to, though not usually at startup. Generally it's 10-15 minutes into the drive.

The HDC or TC engagement; however, is an interesting one. I'm still not sure it's even a "problem" per se. Have you seen it since your first post? Can you reproduce it at that same hard right turn every time or consistently at least? If so, make a video!

 

[Rmeekdesign]

I think the bumping at a slow right turn is probably unrelated, actually. They happen independent of each other. The HDC response occurs after pulling out of the driveway/ parking spot, going forward and straight. It would do it every time I do that if I let it. But I’ve found that turning my steering wheel to the left throws up the HDC fault/special programs off, thus avoiding the HDC response. Basically, it seems that if the HDC or special programs are not “turned off” via fault code, they’re active, if that makes sense. Also, when this happens, the lights you would expect to see if, say, the HDC is turned on, are illuminated. It’s all very weird to me. I’m sure it’s just an electrical issue somewhere, bad wire or something, it’s just locating it that’s difficult.

 

[Houm_WA]

So you can reproduce that one at will? Why not take your mechanic for a spin?

 

[Rmeekdesign]

Oh yes, that’s the plan (if calibrations don’t work). It was only recently that it began happening that way, it happened a few months ago and then totally stopped.

 

[DPetty2994]

Had our Maltese riding shotgun recently—and he decided to climb over the center console into my lap.

I’m doing so—he hit the HDC button. FREAKED me out.

Didn’t know what was going on.

When I realized it—a simple push of the button had me rolling normal.

Sounds like maybe an issue with the HDC system? Did you mechanic check that out?