Concerns about the allocation of possible excess cash appear to have held up for now the proposed $1.6 billion settlement between Toyota and consumers asserting economic damages tied to sudden acceleration defects.

U.S. District Judge James Selna in Santa Ana, Calif., concluded in a tentative order that the deal was “fair, adequate, and reasonable,” but said that “certain difficulties in the plan of allocation of the settlement funds preclude the Court’s final approval of the proposed settlement at this time.”