Volkswagen and its Porsche unit say they're recalling a total of about 800,000 Touareg and Cayenne SUVs worldwide because of a potential problem with the pedal system.

Volkswagen said Thursday that it is recalling 391,000 Touaregs worldwide because of a problem that was detected in internal checks with "possible loosening of a retaining ring on the bearing block of the pedal system." The vehicles concerned are 2011-2016 models.

Porsche said the recall also affects just over 409,000 of its Cayenne SUVs, made in the same years.

Volkswagen said it will contact owners of the cars and aims to examine the vehicles as quickly as possible, with the checks expected to take less than half an hour each.

The recall comes as Volkswagen grapples with fallout from its diesel emissions-rigging scandal.