Adaptive Damping System, Basic Function - GF32.32-P-1004A
Vehicles with Adaptive Damping System
Overview
This document contains information on:
- General
- Function requirements
- Function
General
The Adaptive Damping System (ADS) is a combination of steel or air suspension with active damper adjustment. The damping mode selected by the driver adapts the damping characteristic on a wheel-specific basis to the road surface condition and the driving style. The damping is adjusted harder or softer depending on the driving situation. If the sensor system records a sporty driving style for example, the comfortable basic damping becomes harder automatically. The electronics work across a continuous scale within a broadly spread damping performance map.
Function requirements
- Ignition switched ON (terminal 15)
Function
The damping mode can be selected by the driver using the DYNAMIC SELECT switch.
In order to be able to adapt the damping characteristics to the road surface condition and driving style, the driving condition is determined.
For this purpose, the Adaptive Damping System control unit reads in signals from the level sensors and information from the Electronic Stability Program (ESP®) control unit, the instrument cluster control unit and the powertrain control unit. To change the damper characteristic, the ADS control unit actuates the damping valve units on the shock absorbers.
The damping valve units are mounted in the damper on the piston rod or the damper tube. The damping valve unit regulates the amount of oil flow from one chamber to another by changing the flow area.
The characteristic of the dampers can be changed using the oil flow quantity.
The flat slide valve closes the flow to the comfort valve and the entire oil flow must pass the main piston.
In order to reduce body pitch and rolling motions as well as to optimize wheel loads and tire traction, the damping becomes harder during acceleration, braking procedures or steering maneuvers.
| Function schemas | |||
| Function schema for Adaptive Damping System | Model 465 with code 470 (Semi-active roll stabilization (semi ARS)) Model 465 with code 479 (Adjustable chassis) | PE32.32-P-2500-97J | |
| Model 118, 177, 247 with code 459 (Steel suspension with adjustable damping) | PE32.32-P-2500-97A | ||
| Model 167 with code 489 (AIRMATIC Dual Control/semi-active air suspension) | PE32.32-P-2500-97B | ||
| Model 213, 238, 257, 290 as of model year 2021 with code 489 (AIRMATIC Dual Control/semi-active air suspension) | PE32.32-P-2500-97C | ||
| Model 223 with code 489 (AIRMATIC Dual Control/semi-active air suspension) Model 223 with code 490 (Electrohydraulic suspension) | PE32.32-P-2500-97D | ||
| Model 295 with code 489 (AIRMATIC Dual Control/semi-active air suspension) Model 296 with code 489 (AIRMATIC Dual Control/semi-active air suspension) Model 297 with code 489 (AIRMATIC Dual Control/semi-active air suspension) | PE32.32-P-2500-97E | ||
| Model 243 with code 457 (Comfort suspension with adjustable damping) | PE32.32-P-2500-97F | ||
| Model 206, 214, 236 with code 459 (Steel suspension with adjustable damping) | PE32.32-P-2500-97G | ||
| Model 192, 232 with code 459 (Steel suspension with adjustable damping) Model 192, 232 with code 470 (Semi-active roll stabilization (Semi ARS)) Model 232 with code 479 (Adjustable chassis) | PE32.32-P-2500-97H | ||
| Model 254 with code 459 (Steel suspension with adjustable damping) | PE32.32-P-2500-97I | ||
| Additional basic functions | |||
| Adjustable damping, basic function Vehicles with adaptive damping | GF32.22-P-1003A | ||
| Record driving condition, basic function | Vehicles with adaptive damping | GF32.32-P-1006A |