Hyundai is recalling 173,000 Sonata sedans in the U.S. for power steering failure, according to filings with the National Highway Traffic Safety Administration.
The 2011 Sonata has a circuit board inside the power steering system’s electronic control unit that may get damaged from corrosion or other weather-related effects. As a result, the power assist may fail and a warning lamp will appear on the instrument panel, although the driver probably would have already been aware of the increased steering effort. Hyundai said its supplier in South Korea, Mobis, had changed the protective coating on the circuit board in October 2010, after which these problems are said to have ceased. Hyundai first noticed the problem in March 2015 when it began analyzing warranty claims for this part and tracked the claims up until January, when Mobis reviewed its records and determined the cause.
Dealers will replace the ECU starting in June. The 2011 Sonata, which was entirely redesigned that year, has been recalled nine times since its 2010 introduction, including for complete steering failures in which the intermediate shaft couplings could separate. In November and September 2015, Hyundai recalled the 2011 and 2012 Sonata for brake pedal defects and engine failures.
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