Sorry if this is a repost
I made 4 copies of my car key and none of them work. Do 99 TL keys have chips in them? Because they open the doors but doesn't start the car. Did I just get the shaft on some poor key making skills or do I need to buy special keys and get it done at a dealership?

 

the keys have chips. go to the dealrship. get your money back from whoever made those keys

 

The computer can only remember up to 3 keys. When you programmed the 4th one, the computer probably disabled all of them.

That's funny, seeing as how the Helms manual says that if you programmed a 4th one, the first programmed key only would be deleted.

Try reprogramming 3 of the keys.