Tesla's Autopilot uses several sources of data about the location of objects around the car. Initial sensor package included several cameras, radar, and 12 ultrasonic sensors (USS). However, the automaker will remove USS from the Model 3 and Model Y this year before doing the same with the Model S and Model X in 2023. The USS tasks will be assigned to the cameras in a semi-autonomous features going forward.
"We are taking the next step in Tesla Vision by removing ultrasonic sensors (USS) from Model 3 and Model Y. We will continue this rollout with Model 3 and Model Y, globally, over the next few months, followed by Model S and Model X in 2023" Tesla stated.
Though the move may prove more cost-effective for Tesla, it does little to relieve pressure from the strained microchip supply. And for those who already think the automaker overseels the capabilities of its Autopilot and Full Self-Driving tech, this news won't be received well. But Tesla believes that humans navigate streets using vision and a brain, so a car should be able to do the same with cameras and computers on board, called Tesla Vision.
Vehicles with USS have full access to features like Summon/Smart Summon, Autopark, and Park Assist. Tesla models that do not have those sensors in the future will be unable to use them fully until the company releases software updates to enable and enhance their functionality. According to Tesla, the temporary restrictions on certain features would not have an impact on vehicle crash test ratings.
Source: Tesla