There is no TRAC button on my car. I think that may be because there is a distinction between the IS350 which comes with VDIM (i.e. integrated ABS, EPS, TRAC, VSC, etc) and other models (e.g. IS250) that come only with TRAC/VSC. Does that make sense? Since the manual is somewhat generic to all models, is it possible that the IS350 does not have the ability to disable the VDIM as opposed to other models with only TRAC/VSC which can be disabled.