Oil is leaking in the area of the Quattro sports rear differential (PR-PDU, PDR, or GH2) side flange or...
Audi technical service bulletin A421524 2026049- for 2010-2012 Audi S4, 2010-2012 Audi S5 and 2010-2012 Audi A5 Cabriolet.
- Bulletin number
- A421524 2026049-
- Component
- Power train: axle assembly: axle shaft
- Summary
- 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.
Owners of these vehicles have filed 90 complaints in the transmission category.
Vehicles covered
VIN decoder
See the problems and recalls for an exact car
Buying a used Audi S4?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history