U.S. safety regulators are investigating whether a recall to fix air bags on nearly 745,000 Chrysler SUVs is working properly.
The company recalled older-model Jeep Grand Cherokees and Libertys in 2012 because the air bags could inflate without a crash, causing injuries.
Chrysler installed an electrical filter to eliminate electrical spikes on air bag circuits and thought that would solve the problem.
But since the recall, the company has received six reports of air bags inflating without a crash on SUVs that had the recall repairs.