John Deere CCU001638.16 – CCU: Hydraulic Oil Level and Transmission Cooler Inspection

The system indicates a potential issue related to the hydraulic oil level or the transmission hydraulic oil cooler. The recommended steps include checking the hydraulic oil level in the sight glass on the rear differential, inspecting the transmission hydraulic oil cooler, and restarting the vehicle. If the code persists, further assistance from a John Deere technician is required.

1. 1

   Hydraulic oil level in the sight glass on the rear differential

2. 2

   Transmission hydraulic oil cooler

1. 1

   Check

   Check the hydraulic oil level in the sight glass on the rear differential.

2. 2

   Inspect

   Inspect the transmission hydraulic oil cooler for any signs of damage or blockage.

3. 3

   Restart

   Restart the vehicle.