, ride height sensors
There are the following 4 height-level sensors:
- Height-level sensor, front left (single)
- Height-level sensor, front right (single)
- Height-level sensor, rear left (single, double only with single-axle level control)
- Ride height sensor, rear right (single, double only with single-axle air suspension)
The 4 height-level sensors are-series standard. Depending on the options fitted, there are 1-channel and 2-channel sensors on the rear axle. 2-channel sensors deliver the signal to the:
- Integrated chassis management (ICM)
- Control unit for the electronic ride height control (EHC = ride height control)
The height-level sensors are electrically connected to the Integrated Chassis Management (ICM). The implements the signal on the FlexRay.
The height-level sensors deliver dynamic information on the height of the vehicle body. This is used by the Vertical Dynamics Management to calculate the body movements and wheel accelerations. In addition, the sensors deliver the information to the automatic headlight beam throw adjustment.
The ride height sensor proportionally converts distances into an analogue voltage signal using an angle of rotation. The sensor can be rotated by 360°. The measuring range is 70° (depending on the installation position). The signals are output as analogue electrical voltages.
Ride height sensors with sawtooth-shaped characteristic curve are being introduced. These feature a wider application range and a nearly independent installation position.
Height-level sensor: Rear axle as an example
| Item | Explanation |
|---|---|
| 1 | Coupling bar |
| 2 | six-pin plug connection |
| 3 | Ride height sensor |