09 EZ Go speed problem
 

I just got this 48V cart and it worked good for a couple of weeks. It would get up and go most of the time. A few times it would drop into low until I turned it off or put it into reverse. Eventually the batteries needed a recharge. At that point it only ran in low. So I charged it. That took all day.

But after charging it would never get out of low. So I checked all the connections and put the seat down now only the reverse buzzer works.

Got any ideas what is wrong?

BTW this is a MPV or whatever.