July 17 (Reuters) - The U.S. National Highway Traffic

Safety Administration (NHTSA) on Thursday asked owners of some

vehicles of Swedish automaker Volvo to urgently

complete a safety recall over a brake failure issue.

Volvo issued a recall in June for 11,469 vehicles of a

number of models due to a loss of brake function.

The remedy for the Volvo recall is to update vehicle

software through an over-the-air download, which as of July 15

has not been done by about 1,000 vehicles, the NHTSA said in a

statement.

"Without this recall remedy, an affected vehicle could

completely lose its ability to brake while going downhill," it

said.

(Reporting by Bhargav Acharya in Toronto; Editing by Chizu

Nomiyama )