When I try to start with feet on the clutch and the brake knob won't turn on

Hello, Replacing the key fob battery will not assist with this issue. If you have a spare key, try that first, if not, you will want to replace the key and have it programmed before seeking additional diagnostic help. Most times the key is the issue, but the anti-theft system, or other control modules it uses, can have issues. If the anti-theft system on the vehicle is the issue, it will need professional diagnosis (most likely ).