I've got an SSV 65 with about 100 hours on it. It has worked flawlessly until This afternoon. I had used it all morning moving feeds and such. I hopped in this afternoon fired it up and when to release the parking brake/hydraulic release button and nothing. Arm rests were down, and I was sitting in the seat. There are no error codes or anything. Could it be a bad switch, or am I missing something? everything appears to be plugged in correctly.