Due to a malfunction at Tesla, the car manufacturer's app did not work properly on Friday.

As a result, some Tesla owners were unable to enter or start their vehicle,

BBC News



The Tesla app is used by drivers as a kind of key to unlock and start their car.

Dozens of owners are talking on social media about an error message in the mobile app that prevented them from connecting to their vehicles.

The complaints came from all over the world, but not every driver has been affected.

The problems were resolved within hours of the outage.

Tesla owner Elon Musk has apologized.

"We will take steps to ensure that this does not happen again," he wrote on Twitter.