MICHIGAN, USA (AP) — Nissan is recalling 640,000 more cars in the US and Canada to fix a growing problem with faulty latches that can allow bonnets to fly open while cars are being driven.

The latest recall covers Altima mid-size sedans from the 2013 through 2015 model years, bringing the total number of Nissan and Infiniti vehicles recalled for the problem to nearly 1.1 million worldwide.

In documents posted Friday by the U.S. National Highway Traffic Safety Administration, Nissan said that if the main latch isn’t fastened, the secondary latch may not hold the bonnet closed as designed.

Friday’s recall covers Altimas built from March 1, 2013 to December 31, 2014. In October of last year, Nissan recalled 238,000 Altimas from the 2013 model year for the same problem. Those were built from March 6, 2012 to February 28, 2013. Also, in January the company recalled 216,000 Nissan Pathfinder SUVs from 2013 and 2014, Infiniti JX35s from 2013, and QX60s from 2014 for the same problem.

Nissan has received no reports of crashes or injuries caused by the problem, spokesman Steve Yaeger said Friday.

Dealers will modify the latch lever, as well as clean and lubricate the secondary latch joint. The latch assembly could be replaced. The problem was discovered when Nissan received reports of a small number of bonnets coming open and damaging the cars.

Nissan continues to investigate the root cause and could add vehicles to the recall list, the company said in government documents.

Yaeger said Nissan believes the repair will fix the issue, but can’t say that with certainty yet. “By law, safety issues have to be reported promptly, and in some cases that means before the corrective action is confirmed 100 per cent to fix the issue,” he said.

The primary bonnet latch mechanism works well, but problems have happened when it is released, Yaeger said. He said owners of the cars being recalled should make sure the main bonnet release is latched and isn’t released while cars are being driven.