The issue impacts certain Jeep Grand Cherokee and Dodge Durango SUVs, model years 2011-2014, with an estimated 644,354 affected customers in the US; 42,380 in Canada; 21,376 in Mexico and 159,685 outside the NAFTA region.

Chrysler Group says it launched an investigation after receiving customer feedback about excessive brake-pedal firmness.
 
The investigation discovered certain vehicles have brake boosters with small crimp joints; and these joints may exhibit corrosion when exposed to water. Should water enter the boosters through corroded joints, brake function may be compromised if the water freezes.
 


Chrysler Group said it is aware of one related accident and no injuries.
 


The fix involves inspecting the affected vehicles and replacing the boosters if their capability has been reduced. All boosters will be equipped with a shield to insulate their crimp joints from water.
 The cost of this work will be borne by Chrysler Group.
 


Affected customers will be contacted with instructions to schedule service with Chrysler Group dealers.
Customers who remain concerned may call 1-800-853-1403.