I realize this is an old thread, but I think you guys just solved a nagging problem for me! Just ordered OEM bulbs, fingers crossedI ran into the same problem. I called the Toyota TAC line and they said this is a known issue when swapping out bulbs for non-OEM bulbs, not just LEDs. Even if you swap with a #74 from Autozone you could have this problem. Before I did the swap my "P" and "D" lights were out in the cluster. When I replaced those bulbs with OEM #74 my VSC problem went away. I still have LEDs for the three main backlights.