Wade Sensing System
- Do not assume that using the wade sensing system reduces the risks of wading. The wade sensing system only detects the immediate level of water that touches the vehicle. The wade sensing system cannot detect or predict the depth of water around the vehicle, or rapid increases in water levels about to occur. The wade sensing system cannot predict whether it is safe to continue driving. The driver is responsible to assess the safety of the driving conditions, potential hazards and the current driving direction to avoid vehicle damage or personal injury.
- Do not wade through flowing or rough water. This action can cause injury or death.
- Do not wade through water if a layer of ice or snow exists on the water surface. The wade sensing system cannot detect the true level of the water, which can cause injury or death.
- Do not use the wade sensing system for off road driving. Rapid increases in water depth cannot be detected in time to deliver a warning message to the driver. This can cause injury or death.
The door mirrors must be in the normal (unfolded) position when using the wade sensing system. If the door mirrors are in the fold position, wade sensing operates, but will give false readings.
The Parking Assist Control Module (PAM) incorporates software which is able to provide the wade sensing functionality. There are 2 ultrasonic sensors located on the underside of the door mirrors. The ultrasonic sensors are hardwired to the PAM. The PAM supplies the sensors with an ignition voltage and an earth lead connection. The sensors return a signal voltage, proportional to the measured reflection from the water. The water depth calculation is based on the reflection from the water surface, which is measured by the sensors, and:
- +/- offset from suspension height adjustment from the Chassis Control Module (CHCM) through the High Speed (HS) Controller Area Network (CAN) chassis systems bus.
- +/- depth effect of road gradient.
The PAM uses these inputs when the vehicle moves through water to provide the driver audible and visual information about:
- The depth of water.
- The gradient of the vehicle compared to the water level.
The wade sensing system can display the water depth information on the Instrument Cluster (IC) virtual display and on the Interactive Display Module 'A' (IDMA). The PAM is connected to the High Speed (HS) Controller Area Network (CAN) chassis systems bus and the FlexRay.
The wade sensing screen can be selected from the IDMA '4X4' or 'Extra Features' menus.
The IDMA can display the current and maximum water depths. The system warns the driver as the maximum depth for wading approaches.
| ITEM | DESCRIPTION |
|---|---|
| 1 | Depth indication numeral |
| 2 | Units |
| 3 | 'Max' warning |
| 4 | Back 'soft key' |
| 5 | Depth indication line |
| 6 | Maximum depth warning |
The IDMA provides the driver with the following information:
- Initial wading advice.
- Maximum vehicle wade depth.
- Advice to select 'Off-Road' suspension height to support the maximum wade depth.
- Ice wade warning, to prevent potential damage to the vehicle.
- Road Gradient - Level, nose down, nose up and laterally uneven.
The wade sensing system warns the driver through the IDMA, IC and audible tones, when the maximum depth approaches. If the wade sensing system limitations are exceeded, the IDMA view will grey out. Wade sensing is suspended if the vehicle's speed is greater than 16 km/h (10 mph). Wade sensing will automatically reactivate if the vehicle's speed is less than 10 km/h (6 mph). If the vehicle's speed is greater than 30 km/h (19 mph) for 30 seconds, wade sensing will automatically switch OFF.