A fault in Volvo's emergency braking system is prompting a worldwide recall of 750,000 vehicles, reports Autocar.

The fault was discovered by Denmark's motoring body, FDM during a road test in 2019. During the test, an XC60 repeatedly failed to stop for an obstacle that should have triggered autonomous emergency braking.

Volvo took the car back to Gothenburg and investigated. It eventually determined that the fault was common to all models produced since January 21, 2019.

The fault is, according to Volvo, a software issue and says that the AEB system can be updated so that it functions properly.

"This support system - which is designed to brake the car automatically in specific conditions and only when a collision is imminent - may not function as intended in certain situations and in certain temperatures," a Volvo spokesperson told Autocar. "This means that the AEB system may not brake the car as intended for certain objects, pedestrians and cyclists. However, in the case of pedestrians and cyclists, the system will always provide a visual and audible forward collision warning, as well as braking support."

Volvo says that the affected cars are still safe to use, just that they might not automatically brake in emergency situations, as Volvo claimed they would.