His brother, Ling Zhengce, was being investigated for "serious discipline violations," generally a euphemism for graft, the party's central disciplinary body said on its website.
Ling Jihua's son died as a result of the high-speed crash in Beijing in March 2012 that also left two women passengers hurt, one of whom was naked, according to media reports at the time. Ling was once seen as a close ally of former president Hu Jintao.
The official kept his post in its 205-member central committee but failed to rise to the the next level -- the 25-person Politburo, and was given a lower profile job as part of the party's united front department.
The Communist party's leadership appointments are decided in an opaque process which analysts say depends on backroom deals between competing factions, often based on regional or family ties.
Ling's brother was a vice-president of the Shanxi provincial branch of the Chinese People's Consultative Conference, a debating chamber which is part of China's party-controlled government structure.
