Fiat Chrysler is recalling 4.8 million US vehicles over a defect that could prevent drivers from turning off cruise control.
It warned owners not to use the function until they get software upgrades.
The Italian-American car maker said no injuries or crashes are related to the large recall campaign.
But it had one report of a driver of a 2017 Dodge Journey unable to turn cruise control off.
The firm said an “unlikely sequence of events” could lead to drivers being unable to cancel cruise control.
Fiat Chrysler said drivers could still stop their car by continuously putting on the brakes or by shifting into neutral gear and braking.
Fiat Chrysler, which in 2015 was hit with penalties from US regulators totalling $175m (£131m) for safety lapses, did not say how much the recalls would cost.