My experience: its good old fashioned pinging, nothing else. I have no idea what this VSA, traction control issue is, and have never experienced it Alhumdolillah.
1st tank: PSO Altron X no pinging. 2nd tank: PSO Altron X, pinging a couple of times which got me worried. So 3rd tank: Total HOBC - its my wife's daily driver so today I drove it after a few days. Noticed that half a tank was spent (200+ KMs on Total HOBC) so I tried every which way to stress test it. Flooring from low RPM, especially during afternoon, warm temperatures, AC on - the exact same conditions under which I had experienced it previously. Tried all I could, multiple times, but couldn't get it to ping, Alhumdolillah.