Seoul/Los Angeles: Tesla has misled tens of thousands of South Korean customers by marketing driver-assistance software that the company knows cannot be legally used in most of its vehicles in the country, according ?to a complaint an advocacy group plans to file with a consumer protection agency on Thursday.Tesla has marketed Full Self-Driving (Supervised) software to prospective buyers in South Korea for years, often collecting lump-sum payments of 9.043 million won ($6,726).FSD can be used on about 20% of Tesla vehicles registered in South Korea — those manufactured in the US, Tesla Korea country manager Seo Young-deuk said in parliamentary…