Just got my 08 tl and I'm trying to figure out how to delete the previously stored phone numbers. Without knowing what the previous owner called his phone, I can't seem to pull it up. Is there a way to just complete a master reset on it?

 

See this thread from 2010. This procedure clears everything from the entire HFL system, including all paired phones.

The directions are from the 2004 TL owners' manual because that's what I have. I assume the same procedure works on the 2008, though I can't guarantee it.