Over 600,000 Nuna Rava car seats recalled over possible crash failure

(NEXSTAR) – Nuna Baby Essentials is recalling more than 600,000 of its Rava line of car seats over a harness defect that could cause the restraint system to fail in a crash.

There have been dozens of complaints about the harness unexpectedly loosening, according to the National Highway Traffic Safety Administration (NHTSA).

"My husband and I were driving today and we noticed my daughter kept getting out of her seat," one consumer wrote. "Once we got home, on further investigation...