Toyota Motor Corp. said Monday its dealers should get parts to fix a sticky gas pedal problem by the end this week as the automaker apologized to Toyota owners and tries to bring an end to a recall that has affected 4.2 million vehicles worldwide.

The company said in a statement that it has begun shipping parts and is training dealers on the repairs. Some dealers will stay open 24 hours to fix the 2.3 million cars and trucks affected by the recall in the U.S.