VW/Audi 09L (Aisin TF-80SC) 6-Speed Automatic Transaxle · VW / Audi / Porsche · Expert rebuild service since 1987. Lifetime warranty. Free diagnostic.
2004–2012 Audi A6 3.0T (FWD), 2004–2010 Audi A8 4.2 (FWD variant), 2006–2011 VW Touareg V6, 2008–2012 Audi Q7 3.0T (FWD)
| Configuration | 6-speed automatic FWD/AWD transaxle (large capacity Aisin) |
|---|---|
| Gear Ratios | 1st 3.67:1 · 2nd 2.00:1 · 3rd 1.41:1 · 4th 1.00:1 · 5th 0.74:1 · 6th 0.57:1 · Rev 4.10:1 |
| Fluid Type | VW/Audi G 055 025 A2 ATF |
| Fluid Capacity | 9.0 qts total, 4.2 qts service refill |
The EPC (electronic pressure control) solenoid in the 09L fails, causing inconsistent line pressure and variable shift quality.
Symptoms: Varying shift firmness, DTC P0777 or P0778, transmission hunting between gears
V6 and V8 torque loads in A6/A8/Q7 applications wear the TCC friction material prematurely.
Symptoms: Highway shudder, DTC P0740, fuel economy reduction
Output shaft seal between 09L and quattro transfer case leaks ATF, causing contamination.
Symptoms: ATF leak from front differential area, low ATF level, 4WD engagement issues
09L rebuild replaces EPC solenoid, all solenoids, all clutch packs, torque converter, and all seals. Transfer case output seal replaced on quattro units. VW G 055 025 A2 ATF used.
VW G 055 025 A2 ATF every 40,000 miles. quattro/quattro transfer cases require separate fluid service (Pentosin ATF 1 or equivalent) every 60,000 miles.
The 09L is an Aisin TF-80SC 6-speed automatic transaxle used in larger Audi V6 and V8 FWD and quattro applications from 2004–2012.
Audi A6 3.0T, A8 4.2, Q7 3.0T, and some VW Touareg V6 variants.
A full rebuild ranges $2,000–$2,600 at Chicago Transmission.
VW/Audi G 055 025 A2 ATF.
Yes — the quattro transfer case requires separate fluid (Pentosin ATF 1) every 60,000 miles in addition to the transmission ATF service.
Free diagnostic, written estimate, lifetime warranty. Chicago's 09L (TF-80SC) rebuild specialists since 1987.
