2019-2025 Audi A4/A5/S4/S5 Difficult Refueling TSB 2079903

Owners of certain 2019-2025 Audi A4, A5, S4, and S5 models may encounter a frustrating issue described as "difficult refueling." This problem manifests when the fuel nozzle repeatedly shuts off during refueling or prevents the fueling process from starting properly. Audi has addressed this concern with Technical Service Bulletin (TSB) 2079903/1, which clarifies the nature of this condition and provides guidance for owners.

Symptoms of Difficult Refueling

The primary symptom reported by customers is the inability to refuel their vehicle smoothly. This includes the "fuel nozzle repeatedly shuts off during refueling" before the tank is full, or the inability to "start the fueling process properly" at all. This can lead to extended time at the gas station and an incomplete fill-up, causing inconvenience for drivers of the affected 2019-2025 Audi A4, A5, S4, and S5 vehicles.

Why Your Audi Experiences Difficult Refueling

Audi's workshop findings indicate that the "difficult refueling" is not due to a fault or component failure. Instead, it's a characteristic of the refueling system design. The high flow velocity of some fuel pump nozzles can cause temporary pressure build-up or bottlenecks within the tank venting system. This pressure increase triggers the premature shutoff mechanism of the fuel nozzle, interrupting the refueling process. This is considered a normal operational characteristic rather than an indication of a defect requiring repair.

Important Warnings for Owners

Audi's TSB 2079903/1 includes crucial information for both technicians and owners. It explicitly states, "Do not replace any components for this issue," as the condition is not caused by a faulty part. Furthermore, the bulletin clarifies that "This TSB is informational only and not applicable to any Audi Warranty." This means that while the bulletin provides an explanation and solution, it does not imply a warranty claim for a defect.

Recommended Owner Action

If you are experiencing "difficult refueling" with your 2019-2025 Audi A4, A5, S4, or S5, Audi recommends a simple troubleshooting approach. The first step is to "advise the customer to try another fuel station or a different nozzle (non-Healy or different dispenser)." Different fuel stations and nozzle types can have varying flow rates and designs, which may alleviate the pressure build-up in your vehicle's tank venting system. You should also "verify that refueling can be completed at another station" to confirm if the issue is specific to a particular pump or location.

This TSB, identified as 2079903/1, aims to provide clarity and a straightforward solution for a common customer complaint, ensuring owners understand the nature of the issue and how to address it effectively without unnecessary repairs.

Source: NHTSA ID: 11026241