Washington -- Toyota Motor Corp. said Friday it will notify customers next week of an interim fix for its planned recall of 600,000 Sienna minivans.

In April, Toyota announced it would recall 600,000 1998-2010 Sienna 2WD minivans to address potential corrosion in the spare tire carrier cable.

Toyota spokesman Brian Lyons said Friday the company would begin sending letters to owners July 19. The company will notify dealers Monday of the plans to tell customers to get an interim inspection of the spare tire carrier cable. If necessary, dealers will relocate the spare tire.

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Toyota had been working on a remedy for the last three months. But Lyons said the company still has no timing for when it will have a permanent fix.

The recall covers 220,000 1998-2003 models and 380,000 2004-2010 models, Lyons said.

Toyota said the condition may be on Siennas that have been driven in cold climate areas with high road salt use. Prolonged exposure to road salts may cause excessive corrosion of the carrier cable.

In a worst case, the carrier cable may fail and the spare tire could become separated from the vehicle, a road hazard for following vehicles that increases the likelihood of a crash.

Vehicles sold or registered in District of Columbia, Connecticut, Delaware, Illinois, Indiana, Kentucky, Massachusetts, Maryland, Maine, Michigan, Minnesota, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Virginia, Vermont, Wisconsin and West Virginia are covered by the recall.