Hi, guys,
I did some research yesterday.
First I fund this under by steering wheel. According to the part number, I found my remote control part number is PZQ71-00042. Then I searched this on ebay. The frequency is stated as 304MHZ ASK on the item page. Then I compared the blade of my key with ebay picture. It should be TOY43 (I believe). For the chips, on a page I found on google, it is either 4C or 4D67. Since 4C is really common. I bough a new key as 304mhz, 4C chip TOY43 key blade. If ti works, I will let everyone know. Fingers crossed.