Transmission Low Air Warning
Caution: If the yellow ‘Caution: Transmission Air Supply Low’ popup appears while the vehicle is in operation, slow down, safely pull the vehicle off the road, then correct the problem.
Pneumatic controls are used to shift the transmission. If there is inadequate air pressure, a yellow caution pop-up will appear and the quality of gear shifts may be degraded. See Fig. Wait for air pressure to build before operating the vehicle.
Caution: If the red ‘Warning: Transmission Will Not Shift’ popup appears while the vehicle is in operation, choose the safest location available to pull the vehicle off the road. Prepare for the vehicle to be immobile if the problem cannot be resolved.
If a severe loss of air pressure occurs, a red warning pop-up will appear and the transmission will not shift. See Fig.
Fig. 1, Low Transmission Air Pressure Pop-up
