There is absolutely ZERO reason you should have accepted a check for that repair. They WANT you to do that, so they can say that they have fulfilled their responsibility. That repair is going to be 10-15k (easy) and they KNOW it isnt 4250.
Thats the preliminary estimate. On page 1 of this thread, thats why I mentioned you were wasting your time going to a tesla service center for that repair, unless the SC was also a body shop ( and most are not).
Hopefully you have not signed or deposited that check. I am not an expert in this but if you didnt you may still be ok, if you did (which probably has some verbiage on it that you are accepting that as full payment for the repair), you might be up a creek without a paddle, so to speak.
Its going to be weeks / a couple months for that repair, and its going to be 10k at a minimum, probably closer to 15 -17k when all is done.