As Congressional investigations continue to probe further into the potential electronic problems in Toyota vehicles with faulty acceleration, the automobiles manufacturer is facing yet another safety concern and has recalled as many as 600,000 Sienna minivans due to concerns over rusting of the spare tire holders.

The recall was announced on Friday and has come just as the investigators announced that they would be holding another hearing in the month of May to review the possible electronic glitches in runaway Toyotas. Because of the faulty acceleration pedals, the Japanese automaker has till now recalled more than 8 million vehicles, a move which managed to be quite a blow to a company who had the reputation of being one of the safest ones around, always stressing on quality.

Company chiefs have vowed that they would respond quickly to all the safety concerns.

Toyota has shared that the latest recall is inclusive of the 1998-2010 models of the Sienna minivans, with a two-wheel drive that have been sold or registered across 20 cold-weather states and the District of Columbia.

Although no fix has yet been made available for the problem, Toyota has said that it will notify the customers as soon as a solution has been found.