If the short circuit occurs, restraint devices including the air bags, pretensioners, and side curtains might not work in a crash.
Ignition switches can move out of position and potentially lead to the engine shutting off while driving and air bags not functioning.
The families of two Wisconsin teenagers killed in a car crash involving a faulty General Motors ignition switch have dropped their lawsuit against the company and are seeking a settlement with the automaker.
GM says the electronic parking brake arm that applies pressure to the back of the brake pads may not fully retract after use.
The vehicles also might not start, and the fuel pump could keep working even when the engine is shut off.
Ford is recalling about 74,000 older-model gas-electric hybrid SUVs in the U.S. and Canada to fix a stalling problem.
The watchdog group said that power failures in thousands of Chrysler vehicles can cause the them to stall while being driven.
More than two million bean bag chairs are being recalled for suffocation and choking hazards following the deaths of two children.
Ford says there have been no accidents or injuries related to either recall.
The U.S. government is offering a free online service for drivers to find out if their vehicles have been recalled but not repaired.