Subtitles section Play video Print subtitles US regulators have demanded Tesler recall 158,000 of its electric cars over safety concerns. The National Highway Traffic Safety Administration asked Kessler on Wednesday to bring in the model S and Model X vehicles. Regulators found that the cars media control units could fail after years of use leading to touch screen display is not working. This would affect safety functions such as D fogging backup cameras on the driver assistance System, the agency said. That drawing review quote Tesler provided confirmation that all units will inevitably fail. Given the memory devices finite storage capacity, it is unusual for the agency to formally demand a recall. Tesler did not immediately respond to requests for comment, but it has until January the 27th to respond to the auto safety agency. If Tesla does no agree to the RICO, it must provide a full explanation for its decision. Though small by number, the action represents a relatively large recall for Tesler, which has far fewer cars on the road than other automakers. The company delivered almost half a million vehicles last year, which was above Wall Street estimates. Tesla's stock has surged over 700% in the past 12 months as investors bet on electric car future. Last week, CEO Elon Musk surpassed Amazon's top boss, Jeff Vessels, to become the world's richest person.