The largest online repair guide library for every car

About us
Contact support
FAQ
Sign up
Sign in

2018 S4 B9 S Tronic Fluid Change Interval & DIY Guide

0

Mike T. · rep 0 · May 25, 3:15 AM · 1 replies · solved · Question

Vehicle: 2018 Audi S4 Prestige

Hey everyone,

I've got a 2018 Audi S4 B9 with the S Tronic transmission, and I'm approaching 40,000 miles. I've heard conflicting information about the DSG/S Tronic fluid change interval. Is it strictly every 40k miles, or can it be pushed a bit?

Also, for those who have done it, is this a feasible DIY job for someone with moderate mechanical skills and access to VCDS? What special tools, if any, are absolutely essential? I'm trying to save some money by doing it myself if possible.

Any advice or step-by-step guides would be greatly appreciated!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 3:15 AM

0

ClearTheCode admin answer:

  1. Recommended Interval: For your 2018 Audi S4 B9 with the S Tronic (DL501/0B5) transmission, the manufacturer-recommended service interval for the transmission fluid and filter change is indeed every 40,000 miles (or 60,000 kilometers). Adhering to this schedule is crucial for the longevity and smooth operation of this complex transmission.

  2. DIY Feasibility: This is a moderately challenging DIY job. While it is certainly possible for an experienced DIYer, it requires specific tools and a methodical approach. It's not just a drain and fill.

  3. Essential Tools & Supplies:

    • VCDS (VAG-COM Diagnostic System) or OBDeleven: Absolutely necessary for monitoring transmission fluid temperature during the filling procedure, as the fluid level is temperature-dependent.
    • Special Fill Adapter: You'll need a specific adapter that screws into the fill port to pump new fluid into the transmission. Generic pumps won't work.
    • Torque Wrench: Critical for tightening bolts to factory specifications, especially for the pan and filter housing.
    • Audi-Approved DSG Fluid: Use only the correct fluid specified for your DL501 transmission. Using incorrect fluid can lead to severe transmission damage.
    • New Transmission Filter & Gasket: Always replace the internal filter and the pan gasket.
    • Fluid Transfer Pump: To pump the new fluid into the transmission.
    • Drain Pan: To catch the old fluid.

  4. Key Steps (Overview):

    • Warm up the transmission to a specific temperature.
    • Drain the old fluid.
    • Remove the transmission pan and replace the internal filter.
    • Clean the pan and magnets.
    • Reinstall the pan with a new gasket.
    • Pump in new fluid until it overflows at a specific temperature (monitored via VCDS).
    • Perform a basic settings reset (optional but recommended).

  5. When to See a Shop: If you're uncomfortable with precise temperature monitoring, working with specialized tools, or the potential for costly mistakes, it's always best to take your S4 to an independent Audi specialist or dealership. Improper fluid levels or contamination can lead to very expensive transmission repairs.

Menu

Help & account