Water damage can eventually cause the wiper link to separate.
Problems with windshield-wiper failures have prompted a recall for the 2009-2012 Toyota RAV4 and 2012-2014 RAV4 EV.
The company has discovered a problem that allows the wiper link to separate from the crank arm. With a bit of irony, the failure is caused by water intrusion and corrosion in the link joint.
"If separation occurs, the windshield wipers could become inoperative, which could reduce driver visibility and increase the risk of a vehicle crash," the company said in a statement.
Service technicians will replace the entire water channel, wiper link and wiper-motor crank arm with revised components to prevent future corrosion and failures.
The campaign affects approximately 423,500 vehicles.