Audi TSB #A421524 2026049-
2011 Audi S5
Affected Component: POWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT
- Supersedes Technical Service Bulletin Group 42 number 13-17 dated March 18, 2013. Oil is leaking 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.