Hill descent control is a safety technology that frees the driver to steer while the vehicle’s computer actuates the anti-lock brakes and traction control to keep the vehicle moving downhill at a pre-set speed. Vehicles with off-road capability frequently feature this capability, where hill descent control can be highly effective.

Auto-leveling headlights are an anti-glare safety measure for a vehicle carrying a heavy load that tips the headlamps’ projection angle. Auto-leveling, or self-leveling, headlights adjust the cut-off line, which is the beams’ farthest boundary, to maintain proper visibility for the driver but avoid blinding other road users.

A proximity key (also called a “smart key” or “intelligent key”) is an electronic fob used for keyless entry and ignition systems in vehicles. Proximity keys pair with push-button starters, enabling drivers to unlock, enter, and start their cars without removing the fob from their pockets or purses.

The “key” transmits low-frequency (LF) radio waves to communicate with a vehicle to lock and unlock doors and start the engine when within a short range. Antennae within the vehicle identify the rolling code radio pulse generator inside the fob.