Bobcat S100 D9509 Error Code
D9509 Error Code
Trailer Brake Reserve Pressure Low is the main cause of D9509 error.D9509 code needs proper lubrication of your transmission's moving parts, it's important to always drive with the right amount of clean fluid. It's good practice to periodically scan over the ground where your truck has been parked and check for signs of fluid leaks.
Tip For S100 Model
It is recommended in cold weather to cycle the glow plugs twice before attempting to start the engine. This will allow for additional heating time for cold weather starting.