He officially succeeded his father as king in 230 BC, but the Ardiaean kingdom was ruled by Agron's second wife, Queen Teuta.
Pinnes was only a young boy[2] when his father died[3] in 230 BC, and his stepmother Teuta assumed de facto control.
Local chiefs demanded greater power and autonomy for their regions and Teuta, who feared losing her status, appeased the aggressors.
Teuta surrendered and accepted Rome's peace terms which included her abdication and the reinstatement of Pinnes.
Demetrius fled to Macedon and Pinnes finally became king, though his sudden death in 217 BC at the age of about 15 meant that he never actually ruled.