ECAS Automatic Load Transfer (ECAS only)

On vehicles equipped with Electronically Controlled Air Suspension (ECAS), ECAS works in conjunction with ABS. When wheel slippage is detected by the ABS, the ECAS system transfers weight from the tag axle to the drive axle by changing air pressures in the suspension air bellows, increasing drive wheel traction.

The ECAS Load Transfer feature is optimized to apply the maximum available vehicle load on the drive axle, up to the maximum allowable limit, determined by the gross axle weight rating (GAWR). In bobtail or with a loaded trailer less than the GAWR, the tag axle supports a negligible load while the drive axle supports nearly the full weight. Above the GAWR, the drive axle is loaded with approximately the maximum allowable load and the tag supports the remainder.

When Load Transfer mode is active, "Load Transfer" will display in the message field of the driver message center. See Fig..

Load transfer mode will automatically deactivate when the vehicle reaches 45 mph (72 kmh).