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Toyota has announced that it will be recalling 1.4 million units of the Toyota Prius, Prius Plug-in Hybrid and the Lexus CT 200h for a problem with the curtain shield air bag modules.

The affected model years are 2010, 2011 and 2012 for the Prius, 2010 and 2012 for the Prius Plug-In Hybrid and 2011 and 2012 for the Lexus CT 200h. The affected airbags are not manufactured by Takata.

The curtain shield air bags modules in the driver and passenger side roof rails that have air bag inflators composed of two chambers welded together. One chamber contains the propellant and the second chamber contains a compressed gas.

Some inflators could have a small crack in the weld area joining the chambers, which could grow over time and cause the inflator chambers to separate. This has been observed when the vehicle is parked and unoccupied for a period of time.

If the inflator separates, the leaking gas could cause the curtain shield air bag to partially inflate, and in limited circumstances, one or both sections of the inflator could enter the interior of the vehicle, which could cause injury if an occupant is present in the car when it happens. Toyota considers this a manufacturing rather than design issue.

The recall measure will involve installing retention brackets on the curtain shield air bag inflators. These retention brackets are designed to prevent the inflator chambers from entering the vehicle interior if separation occurs.

UMW Toyota Motor has confirmed that there are Malaysian cars involved in the recall exercise. Please click here to read more about how the recall affects Malaysian cars.