Was working fine all a day and moments before(?).

When I got in the forklift to start it up, the radio turned on but the gauges did not move/warm up. Therefore, not allowing me to turn on the machine. However, the parking brake indicater (P) is light up on the righthand side as well as the gauge that shows the RPM's, mileage and hours are also on(?).

Please help, what do I need to do to get this started?

Your replies are greatly appreciated!