Attention! If the vehicle is equipped with electronically controlled air suspension, turn off the suspension height control switch.
2. Remove the level/filler plug, then remove the drain plug and drain the gear oil (pic. 24.2).
Pic. 24.2. Location of the control / filler plug (A) and drain plug (IN) transfer box
3. Replace drain plug and tighten securely.
4. Fill with new gear oil up to the bottom edge of the filler hole. The grade of oil prescribed is listed in paragraph «Recommended Fluids and Lubricants».
5. Replace the level/filler plug and tighten securely.