Major automakers are recalling millions of vehicles due to potentially defective front passenger air-bag inflators that can rupture and spray metal shrapnel. (Reuters)

The National Highway Traffic Safety Administration put out a recall notice Monday for defective airbags and urged people whose cars are equipped with them to take action immediately.

More than 4.7 million vehicles are involved in the recall. At least four people have died when inflator mechanisms ruptured on the air bags, spraying the passengers with metal fragments.

NHTSA warned drivers whose cars have been recalled as a result of faulty inflators to take them to the dealer immediately. Safety experts said about 12 million vehicles worldwide have been recalled because of the problem.

The airbags are made by Takata and are in place in some Toyota, Honda, Mazda, BMW, Nissan and General Motors models. NHTSA said it was particularly urgent for vehicles owners in Florida, Puerto Rico, Guam, Saipan, American Samoa, Virgin Islands and Hawaii to take immediate action.

The federal safety agency said car owners  uncertain about whether their vehicle is equipped with a Takata airbag can check at http://www.safercar.gov/. Using the site requires that owners enter their vehicle identification number (VIN).

NHTSA said the affected vehicles by manufacturer are:

Toyota: 778,177 vehicles potentially affected

2002 – 2004 Lexus SC
2003 – 2004 Toyota Corolla
2003 – 2004 Toyota Corolla Matrix
2002 – 2004 Toyota Sequoia
2003 – 2004 Toyota Tundra
2003 – 2004 Pontiac Vibe

Honda: 2,803,214 vehicles potentially affected

2001 – 2007 Honda Accord (4 cyl)
2001 – 2002 Honda Accord (6 cyl)
2001 – 2005 Honda Civic
2002 – 2006 Honda CR-V
2003 – 2011 Honda Element
2002 – 2004 Honda Odyssey
2003 – 2007 Honda Pilot
2006 – Honda Ridgeline
2003 – 2006 Acura MDX
2002 – 2003 Acura TL/CL

Nissan: 437,712 vehicles potentially affected

2001 – 2003 Nissan Maxima
2001 – 2003 Nissan Pathfinder
2002 – 2003 Nissan Sentra
2001 – 2003 Infiniti I30/I35
2002 – 2003 Infiniti QX4
2003 – Infiniti FX

Mazda: 18,050 vehicles potentially affected

2003 – 2004 Mazda6
2004 Mazda RX-8

BMW: 573,935 vehicles potentially affected

2000 – 2005 3 Series Sedan
2000 – 2006 3 Series Coupe
2000 – 2005 3 Series Sports Wagon
2000 – 2006 3 Series Convertible
2001 – 2006 M3 Coupe
2001 – 2006 M3 Convertible

General Motors: 133,221 vehicles potentially affected

2002 – 2003 Buick LeSabre
2002 – 2003 Buick Rendezvous
2002 – 2003 Cadillac DeVille
2002 – 2003 Chevrolet Trailblazer
2002 – 2003 Chevrolet Impala
2002 – 2003 Chevrolet Monte Carlo
2002 – 2003 Chevrolet Venture
2002 – 2003 GMC Envoy
2002 – 2003 GMC Envoy XL
2002 – 2003 Oldsmobile Aurora
2002 – 2003 Oldsmobile Bravada
2002 – 2003 Oldsmobile Silhouette
2002 – 2003 Pontiac Bonneville
2002 – 2003 Pontiac Montana