Toyota says president, chairman of scandal-hit Daihatsu unit to step down

The departures are among the most drastic changes Daihatsu has made so far, as Toyota seeks to return the brand to its roots as one of Japan 's most iconic compact car makers.

Toyota faces a potential hit to its reputation from safety certification lapses at the company.

The scandals at the three companies triggered a rare apology of Toyota Chairman Akio Toyoda last month .