No start

I have a bobcat s250. Keyless start. Keypad only lights up for about 5 seconds then goes off. Held code button down no code just D/B!!!!.
Replaced battery. But same results any ideas???

Welcome to HEF Moonlite. A number of things can cause this problem, but the most likely suspect is a bad wiring connection that resists load. The problem is going to be finding it. However, the very first place I'd look is the connector that connects lower frame harness to cab harness. This connector is typically located on the top side of hydraulic reservoir and to the rear of reservoir. With the cab raised, locate the bundle of wiring coming from cab and going down back wall to the lower frame. Follow that bundle of wiring and you'll find that connector. Take it apart and look closely and the pin/socket connections inside the connector. The main power wire to cab goes through that connector and more than once I've seen corrosion compromise that connection. On the older machines it was a red/white wire, on the newer units it was either wire #1200 or wire #1900, can't remember which. Use a test light probe to make sure there's power on the lower harness side of that connector. If so, reconnect the connector, then probe test the wire on the cab side of the connector to see if power is making its way through.

Start where Willie says ...he knows his chit!