Fiat Chrysler is recalling around 640,000 vehicles in the U.S., the automaker said in a statement on Tuesday.
An estimated 646,394 Dodge Durango and Jeep Grand Cherokee SUVs that are modeled between 2011 and 2014 are recalled because of their brake-booster shields.
"The shields are designed to protect the boosters from water intrusion," the statement said.
"Should water get inside and contribute to corrosion, and/or freeze, brake function may be degraded," it added.
Customers who experience excessive firmness in brake pedals should contact their dealers, the company also warned.
Fiat Chrysler said affected customers would be notified for service at the beginning of November.
The firm said an estimated 42,304 vehicles in Canada and 21,139 vehicles in Mexico could also be affected.
By Ovunc Kutlu in New York