Eriksson, 64, will play a hands-on role in overseeing strategic planning and supporting coaching staff of the twice Thai champions, who become his latest club after stints in charge of some of the biggest teams in European football.
The former boss of Lazio, Manchester City and Benfica cast aside assertions that joining the Thai side represented a fall from grace after a decorated coaching career that saw him win more than a dozen major trophies.
"I look forward to this job. I'm happy, otherwise I wouldn't be here," Eriksson told a packed news conference in Bangkok. "What other people think is not that important for me anymore."
"The standard [of Thai football] today is much better. There are many good things. Of course, it will be a nice experience for me. I'm looking forward to it."
Eriksson is no stranger to Thailand having coached two English sides owned by Thai tycoons, including self-exiled former Prime Minister Thaksin Shinawatra, whose decision to dispense with Eriksson as Manchester City boss in 2008 angered fans and resulted in the club's sale to an Abu Dhabi consortium.
"The players are eager to learn from a world-class expert," Robert Procureur, the club's general manager, said in a statement. "I believe that his arrival will draw positive international attention to the Thai Premier League."
Eriksson's achievements include victories in the UEFA and Cup Winners' Cups and league and cup doubles in three countries and he was the first foreigner to manage the England national team, a job he held for five years.
