| Item name | Spare part catalog number | Description |
| 1 | - | Air suspension control unit |
| 2 | - | Instrument panel |
| 3 | - | Rotary switch and control unit of the system "Terrain Response" |
| 4 | - | Rear Differential Control Module (if available) |
| 5 | - | Rear differential |
| 6 | - | Transfer case (center differential and high/low gear) |
| 7 | - | Engine Control Module |
| 8 | - | Transfer Case Control Module |
| 9 | - | Gearbox control module (only for cars with automatic transmission) |
| 10 | - | ABS module |
General information
The Terrain Response™ system allows the driver to select a program that provides the right traction and vehicle dynamics for the given road conditions. This system cannot be switched off. The default program is 'special programs off'. It is suitable for all normal road conditions. Four special programs are provided for driving on any type of terrain.
The system is controlled by a rotary switch mounted on the center console behind the selector lever. (for cars with automatic transmission) or gear shift lever (for cars with manual transmission). Using the rotary switch, you can select one of five programs:
- Special programs off (special programs are disabled)
- Grass/Gravel/Snow (program "Grass/gravel/snow")
- Mud/Ruts (program "Mud/ruts")
- Sand (program "Sand")
- Rock crawl (program "Slow movement on a rocky surface").
The rotary switch can be turned 360 degrees or more in either direction to sequentially select programs. If the vehicle has a system "Terrain Response", it also features a high-level instrument cluster that displays the selected program on the message center display.
System "Terrain Response" coordinates the operation of several subsystems to ensure that the vehicle's performance characteristics are appropriate for the selected surface. The system "Terrain Response" consists of the following subsystems:
- Engine management system
- Automatic transmission (if available)
- Transfer case (center differential)
- Rear differential (with electronic control)
- Brake system (aBS/DSC/ETC/HDC functions)
- Air suspension.
The Terrain Response control unit is located under the rotary switch. The control unit detects the position of the rotary switch and transmits a corresponding signal via the high-speed CAN bus, which is received by the control modules of each of the subsystems. Each of these control modules runs software that selects the appropriate operating parameters for the system being monitored based on the selected Terrain Response mode. In addition, each control module provides feedback for the selected program, so that the Terrain Response control unit receives confirmation that all systems have selected the appropriate operating parameters.
The information is transmitted to the driver in the form of a message on the message center display, which is located on the instrument panel. The message states what changes in operating parameters can be made to optimize the vehicle's dynamic characteristics taking into account the driving conditions. The automatic assistance of the Terrain Response system and the information displayed on the display will be especially useful for a driver who has no experience of driving off-road. An experienced driver can select special programs for extreme conditions, allowing you to control the operation of the vehicle's systems. (for example, the parameters of the throttle valve, gear shifting or traction control system), which is not possible on vehicles not equipped with the Terrain Response system.
[The source of the article is located on the website: LRman.ru]
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