My 1998 LC plastic key fob has cracked so I found a replacement fob (with key) on eBay. The new fob has the Toyota emblem, etc. so it looks like an OEM part. I took this to the hardware store and they cut the new key using my old key. The new key fits and the car turns over. But it won't start using this key, it just keeps turning over. I can insert my old key and it starts right up. I did a search to see if this issue has been raised before but didn't find anything. Any ideas? Thanks.