Influences from the vehicle environment
The function of the parking aid can be disrupted by the following influences from the vehicle environment:
- During a function test of the parking aid, no obstacles may be located in the following areas:
- In front of and behind the vehicle at least 2 m gap
- To the side of the vehicle at least 1 m gap
Under certain circumstances, bumps, ridges and gutters in the ground can be detected as obstacles.
- In extreme cases, ground surfaces with good reflection properties can be detected as an obstacle. These include:
- Cobblestones
- Ground surfaces with lateral grooves
- Ground surfaces with gutters
- Ground surfaces with railway or tram lines
- Ground surfaces with potholes
- Gravel
- Certain forms of terrain can be detected as obstacles depending on the vehicle position. These include:
- Bends
- Lower
- Ramps
- 'Sleeping policemen'
The effect is amplified on wet roads.
- Heavy clouds of exhaust gas or heat in the detection range of the parking aid can cause bogus obstacle detection in extreme cases.
The following conditions can contribute to bogus obstacle detection:
- Exhaust gas stream with strong acceleration
- Exhaust gas stream at low outside temperatures
- Exhaust pipe outflow strikes an obstacle (e.g. wall, other vehicle)
- Vehicle with hot engine remains at standstill and heat cloud forms in the detection range of the parking aid
- Ultrasound sources in the vehicle environment can influence the function of the parking aid. These include:
- Compresses air devices such as impact screwdrivers, compressors etc.
- Cleaning equipment (e.g. steam cleaners)
- Running machines, loud engine noise, motorcycles, trucks
- Tire rolling noise from passing vehicles, in particular in rain and at high speeds
- Heavy rain
- EMC interference sources in the vehicle environment can also influence the function of the parking aid. These include:
- Chargers
- Induction loops
- Clocked fluorescent tubes
- Garage door drives
- Electrical machines