Toyota has promised to look again into possible electronic problems with its vehicles, though it has still not decided whether its President will appear before the U. S. Congress.

Toyota Motor Corp. has to respond to the unfolding recall crisis, which have been blown to 8.5 million vehicles globally with problems with gas pedals, floor mats and brakes.

Toyota President Akio Toyoda is being questioned about the progress of the recall of more than 400,000 Prius cars, whose braking software is being replaced.

Toyota attorney Theodore Hester, in a letter to the committee, said that the company had carried out "exhaustive and robust" tests which confirmed there were no electronics problems with its vehicles. He promised to look into the matter again.

Recently, Toyota rolled out a new Japan compact model called Passo without the usual fanfare or a news conference by executives.

Toyota in Tokyo is still to receive a notice from the U. S. National Highway Traffic Safety Administration. It is feared that the series of recalls may next expand to the Corolla.

"We have yet to be contacted by the NHTSA regarding what has been reported in the press about a power-steering issue in the Corolla", Toyota spokesman Paul Nolasco said.