Table 1 shows one common forward collision avoidance related problems of the 2020 Volvo S90.
| Problem Category | Number of Problems |
|---|---|
| Warnings problems |
While driving on a rainy day my forward collision warning (fcw) system cam on signifying and impending collision via the "red warning vehicle crash" in the heads-up display. The car started to automatically break as well. There were no other vehicles in my land or close to me at the time. It was purely heavy rain. This is not the first occurrence of the fcw system engaging automatically. The same situation occurs during heavy rains or if water splashes from the other land in front of the car. The situation seems similar to the Hyundai recall just issued by nhsta https://static. Nhtsa. Gov/odi/rcl/2026/rclrpt-26v316-9486. Pdf luckily I have avoided being rear ended as no one has been close to me or they have been able to react to the sudden unexpected deceleration of my vehicle without my intervention or desire to do so. I ask NHTSA to broaden its investigation into other vehicles as this seems to be an issue across vehicle platforms and manufacturers.
On 8/22 while driving on a city road in extreme rainy conditions the vehicle in front of me drove through standing water, which created significant spray. As a result the city safety feature of my Volvo S90 engaged in an extreme fashion. Without any risk of an impending collision the city safety feature determined the water spray to be an obstacle and fully engaged the brakes (abs event) to avoid the impending collision including engaging seat-belt pre-tensioning. I was lucky as the drive behind me was paying attention and swerved to avoid rear ending my abruptly stopping vehicle without any intervention from me as the driver. I believe that the issue was caused due to the city safety system incorrectly detecting the water spray as an impeding crash. This seems to be a system calibration that could have been addressed during development. I wanted to notify NHTSA of this situation so you can be aware and monitor the impact of these driver assist features on overall road safety.