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Toyota Motor Corp. U.S.A. has said it is recalling over 337,000 vehicles due to problems with the vehicle’s suspension arm assemblies which could cause a driver to lose control when driving.

The recall includes the 2006 to 2011 models of the Toyota RAV4 and the 2010 Lexus HS250h.

This is the third time to date that Toyota vehicles have been recalled due to a suspension related problem. As cars were recalled by the company in 2012 and 2013.

Toyota said following the earlier action, that if the rear wheel alignment nuts were not tightened properly when an alignment is performed, rust could gather on the suspension arm threads. When this occurs and is not identified or remedied during servicing or repairs under the current solution procedure, the threads may wear over time, thereby causing the arm to split (this could result in loss of vehicle control).

Toyota has said it is sending letters to all the owners of the affected vehicles so as to keep them aware of the recall. It said car dealers will change the two rear suspension arm assemblies to new ones for free. Additionally, an epoxy will be put in place during vehicle service to prevent any arm adjustment problem in the future.

Toyota first recalled vehicles in 2012 due to a wobbly rear suspension. Then it recalled cars again in 2013 as the nuts used to adjust both rear wheel alignments were not tightened properly.

This time around, Toyota discovered that rust could be formed on the vehicles suspension arm threads if the rear wheel alignment nuts were not tightened correctly. This can result in the suspension arm separating from the car and the driver losing control.