I just bought a used car that has push button driver door entry. how can I find out what the code is?
You will have to visit your nearest dealership for a technician to program a replacement code that works with your on board car computer. The process is quite expensive and you should consider asking for the code from your seller.
Ask the person you bought it from
If it's a ford product, the code will be on the top of the security module. This is normally hidden behind the panels in front of the passenger side rear wheel.