Audi TSB #A421317 2026049-
2010 Audi S4
Affected Component: ENGINE AND ENGINE COOLING
- Summary
- Supersedes Technical Service Bulletin Group 42 number 12-14 dated October 5, 2012. Oil leak in the area of the Quattro sports rear differential (PR-PDU, PDR, or GH2) side flange or axle shaft inboard flange. Insufficient sealant on the protective cap on the inboard constant velocity joint at the rear differential on vehicles with a sports differential.