Oct 14 (Reuters) - The National Highway Traffic Safety

Administration (NHTSA) said on Monday it has opened a

preliminary evaluation into about 35,950 Ford Flex

vehicles in the United States over a potential rear-camera

failure.

Ford said it was working with the NHTSA to support its

investigation.

The U.S. auto safety regulator said it has received about 23

reports alleging the rear-view camera image was blank,

distorted, or inverted, on 2019 model year vehicles.