After his retirement from competitive luge, Fendt got active in the International Luge Federation (FIL), being named Vice-President Sport for Artificial Track in 1985, a position he stayed at until the death of FIL's first president Bert Isatitsch in February 1994. Fendt was appointed acting president of the FIL as a result, then elected full president in June of that year. He served until his 2020 retirement.
On Fendt's 61st birthday in Munich, he received the BundesverdienstkreuzVerdienstkreuz am Bande (Cross of the Order of Merit of the Federal Republic of Germany) for his contributions toward society, mainly in luge.