The affected vehicles are equipped with certain radios with 8.4-inch touchscreens that could be vulnerable to cyber-hacking. The recall follows a Wired.com report that said researchers were able to take control of a 2014 Cherokee, disabling the SUV's engine functions and controlling the air-conditioning, locks and radio.
"The recall aligns with an ongoing software distribution that insulates connected vehicles from remote manipulation which, if unauthorized, constitutes criminal action," the automaker said in a statement.
Fiat-Chrysler said it is unaware of any injuries "related to software exploitation" and has not received any "related complaints, warranty claims or accidents — independent of the media demonstration."
The recall also includes the 2013-'15 Dodge Viper; 2013-'15 Ram 1500, 2500 and 3500; 2013-'15 Ram 3500, 4500 and 5500; 2014-'15 Dodge Durango; 2015 Chrysler 200, Chrysler 300 and Dodge Charger and 2015 Dodge Challenger.
Affected owners will receive a USB device that they may use to upgrade vehicle software. The device "provides additional security features independent of the network-level measures," the company said.
A Fiat-Chrysler spokeswoman did not respond immediately to a query from Edmunds asking when owners can expect to receive the device.
The network-level measures require no customer or dealer actions and block remote access to certain vehicle systems. They were fully tested and implemented within the cellular network on July 23, said the company.
Customers are also urged to visit the Uconnect software update site to input their Vehicle Identification Numbers or VINs to determine if their vehicles are included in the recall.
Fiat-Chrysler also said it has established a dedicated System Quality Engineering team focused on "identifying and implementing best practices for software development and integration."
It added: "The software manipulation addressed by this recall required unique and extensive technical knowledge, prolonged physical access to a subject vehicle and extended periods of time to write code. No defect has been found. FCA U.S. is conducting this campaign out of an abundance of caution."
No information about the recall has been posted on the Web site of the National Highway Traffic Safety Administration, which oversees vehicle safety in the U.S.
Fears about vehicle cyber-attacks prompted two senators to introduce legislation this week setting new rules to guard against the problem.
Fiat-Chrysler owners with questions can contact FCA US customer service at 1-800-853-1403.
Edmunds says: Owners of these vehicles are being urged to acquire and install the software update.