 After suffering a career-ending injury in 1967, Pettersson took on the role as head coach for the Swedish national junior team from 1968 to 1974, the Swedish national senior team from 1974 to 1976, and the Norwegian national men's team from 1978 to 1981.He was inducted into the IIHF Hall of Fame in 2004, and his jersey #14 was retired by Västra Frölunda in 2002.Pettersson was born in Surahammar, a rural industrial town where the name Ronald was unusual, thus the locals nicknamed him Collman, after the famous actor Ronald Colman.