- heat the body (104-140 f) and name plate (68-86 f). "ensuring not to overheat"...
- put protective tape around the emblems (what type of tape... I'm not sure)
- use piano wire (with ends wrapped around wood blocks to serve as handles) to get behind the emblem and scrape off the double backed tape.
I've seen info of people using hair dryers and dental floss, and I used the same to de-badge a Toyota Matrix
I looked at the front Lexus name plate and from behind it doesn't look like there are any nuts associated with the name plate, so it is likely stuck on with double-backed tape or adhesive too... Wouldn't be so easy to remove as the other emblems as it is inset into the plastic some. EDIT-THIS LOOKS WRONG -nuts must have been higher than my eyes could see!