WASHINGTON, May 29 (Reuters) - The National Highway

Traffic Safety Administration on Wednesday said it is seeking

records from Tesla in its investigation into Model 3

and Model Y vehicles over power steering loss.

The auto safety regulator, which upgraded its investigation

in February, said in a letter dated Tuesday to Tesla posted on

its website that it wants Tesla's records about the component

including the process for identifying field issues and creating

countermeasures for potential defects. The agency also wants to

know if Tesla has made any changes to power steering components

or plans any in the next four months.