The states, led by New York and Connecticut, in a letter also urged NHTSA to mandate that all car seat labels include guidance that every child should remain in car seats until exceeding maximum U.S. height or weight standards.
The automaker is encouraging customers who want a diesel engine to switch to its new hybrid powertrain.
The agency said it had received 476 consumer complaints alleging one or both of the sliding doors could not be opened on 2016 Dodge Caravans and Chrysler Town & Countrys.
The decision to use Germany’s Kuka to build the EV600 vans shows the automaker’s desire to stick to a plan to roll out the vehicle in late 2021.
The lawsuit by union pension funds and asset managers alleges the celebrity CEO strong-armed Tesla’s board to buy SolarCity.