Why does the transmission pressure light stay on on your JD 4450?

The transmission pressure light on a JOHN DEERe 4450 may stay on due to low hydraulic fluid levels, a faulty pressure switch, or issues with the hydraulic pump. It's essential to check the hydraulic fluid level and quality first. If the fluid is adequate, further inspection of the pressure switch and hydraulic components may be necessary. Ignoring this warning can lead to transmission damage, so addressing the issue promptly is crucial.