Chrysler is recalling 870,000 SUVs because of brake corrosion.
The recall affects Jeep Grand Cherokees and Dodge Durangos.
Model years are from 2011 through 2014.
Chrysler says crimp joints in the brake boosters can corrode if they're exposed to water.
If the water freezes, it would be harder to stop your SUV.
Dealers will install a shield to protect the boosters for free.
They'll also replace boosters that aren't working properly.
Chrysler is reporting one accident so far.
There are no reports of anyone being hurt because of the defect.