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Home >> Audi >> 2025 >> S4 Premium >> Repair and Diagnosis >> Drivelines & Axles >> Differentials & Drive Axles >> Final Drive, Differential (Rear Final Drive 0D2, 0D3, 0DB, 0B0, 0BX, 0DG, 0G2, 09R) >> 39 Final Drive, Differential >> Gear Oil >> Gear Oil, Checking Level >> GEAR OIL LEVEL, CHECKING, "quattro ultra", 09R

GEAR OIL LEVEL, CHECKING, "quattro ultra", 09R

Special tools and workshop equipment required 

-- Remove the oil filler plug -1- to check the gear oil.

Fig 1: Exploded View Of Drain And Check Plugs, "quattro ultra", 09R
GWWA39-10973Courtesy of AUDI OF AMERICA, LLC

The oil level is correct when the rear final drive is filled up to the lower edge of the oil fill hole.

-- Install the plug -1- and tighten. Tightening Specification. Refer to COMPONENT LOCATION OVERVIEW - DRAIN AND CHECK PLUGS, "quattro ultra", 0B0 .