Do you still have to pay car payment to the car dealership if your car was a write off?

It depends. Normally, if you car was repossessed, the finance company will "write off" the balance, but that does not mean you don't have to pay it. The company normally sells the car at an auction and you owe any deficiency balance. In other words, if you owe $10,000 on the car and it only sells for $6000, you will owe the $4000 difference.