Oil leak in the area of the Quattro sports rear differential (PR-PDU, PDR, or GH2) side flange, or axle...
Audi technical service bulletin A421214 2026049- for 2010-2012 Audi S4, 2010-2012 Audi S5 and 2010-2012 Audi S5 Cabriolet.
- Bulletin number
- A421214 2026049-
- Component
- Power train: axle assembly: axle shaft
- Summary
- Supersedes Technical Service Bulletin Group 42 number 12 ? 13 dated September 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 vehicle with a sports differential. Optimized use of sealer in production from 07/10/2011.
Owners of these vehicles have filed 94 complaints in the transmission category.
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