Suspension Air Pressure
The ICUC may display four vehicle air suspension yellow caution alerts.
These include Suspension Lowered ( see Fig. ) and Suspension Raised ( see Fig. ) alerts indicating that the current rear suspension height is either below or above the normal ride height.
Fig. 1, Suspension Lowered Alert - ICUC
Fig. 2, Suspension Raised Alert - ICUC
ECAS Problem Detected alert ( see Fig. ) indicates the electronically controlled air suspension system has an active fault.
A flashing Load Transfer alert ( see Fig. ) indicates the ECAS system is applying the maximum available vehicle load on the drive axle up to the maximum allowable limit determined by the gross axle weight rating (GAWR). Load transfer mode automatically deactivates when the vehicle reaches 45 mph (72 kmh).
Fig. 3, ECAS Problem Detected Alert- ICUC
