Terrain Management

The ABS  module adjusts the vehicle dynamic system operational parameters when the terrain mode request message is received from the ATCM  , depending on the terrain mode requested.

• Grass/Gravel/Snow - The base ABS  , traction control and ESC  lower the threshold used to detect wheel lock up as it is more likely to occur on loose, slippery surfaces.
• Sand - The base ABS  raises the threshold used to detect wheel lock up to allow the vehicle to "dig into" sand or deep gravel surfaces. Traction control and ESC  raise the parameters for brake and engine torque reductions to optimize traction and engine performance.
• Mud/Ruts - The base ABS  lowers the threshold used to detect wheel lock up as it is more likely to occur on slippery, muddy surfaces. Traction control and ESC  raises the parameters for brake and engine torque reductions to optimize traction and engine performance.

For additional information on the terrain management system, REFER to FOUR WHEEL DRIVE (4WD) SYSTEMS , AWD  .