We've been testing a refreshed 2018 Subaru Outback here at 's Chicago offices, and when it arrived, it came with an unusual message: "SRH Off." Our response to that was to say, "Um, OK ..."
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So, what is SRH? Well, it stands for Steering Responsive Headlights. When enabled, the headlights move in the direction the steering wheel is turned, effectively lighting up the area around the corner as the car turns. The feature was first introduced on Subaru vehicles in 2017 and made available on the Outback for the 2018 model year.
The system is controlled via the information screen in the center of the gauge cluster behind the steering wheel. The buttons necessary to access the screen and activate or deactivate SRH are located on the lower left of the steering wheel.
This sort of technology has been around in various forms for decades. In early examples, the headlights were physically connected to the steering controls and moved in conjunction with the steering wheel. Later examples switched to electronic controls, but the effect remained the same.
One of the most famous examples was the failed Tucker '48, a car loaded with safety features that were cutting-edge for the late 1940s. The '48 featured a third, centrally positioned headlight that would move with steering input.