1999 Polaris SLH, SLTH, SLX, SLTX, PRO785 Factory Service Manual, Page 334Get this manual
ELECTRICAL Multi-Function Display MFD Troubleshooting
If the MFD is not working check the following items: Battery connections for corrosion; Fuse inside electrical box; Pins in MFD connector for corrosion or loose fit; Power and ground at the connector to the MFD Component inputs are functioning properly
Following are some of the common symptoms of malfunctioning MFD and possible causes:
Display is stuck on one function display shows all 8s buttons don't work