U.S. auto safety regulators have rejected a request to investigate power system failures in almost 5 million Fiat Chrysler vehicles.
The National Highway Traffic Safety Administration said in documents posted Tuesday that two fuel pump relay recalls took care of stalling problems, and there was no valid evidence to support other claims made by the Center for Auto Safety.
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The nonprofit group filed a petition last August contending that an electrical power control module used by Chrysler in millions of vehicles since 2007 can go haywire, causing them to stall in traffic and cut off devices powered by electricity.
But the agency said it analyzed consumer complaint data and determined that stalling and "no start" problems were addressed by fuel pump relay recalls.