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2019 Audi S3 S-Tronic Transmission Jerking/Hesitation - Is this normal?

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Mike T. · rep 0 · May 25, 3:16 AM · 1 replies · solved · Question

Vehicle: 2019 Audi S3 2.0T Quattro

Hey everyone,

I recently bought a used 2019 Audi S3 with about 40,000 miles on it, and I'm loving the car, but I've noticed something concerning with the S-Tronic (DSG) transmission. Sometimes, especially at lower speeds or when shifting from first to second gear, it feels like the transmission hesitates or even jerks quite noticeably. It's not smooth at all, and it makes driving in traffic a bit unpleasant.

I've heard these transmissions can be a bit quirky, but I'm worried this might be a sign of a bigger problem. Is this 'normal' behavior for a DSG, or should I be concerned? I haven't seen any warning lights, and there are no obvious OBD codes that I've found yet. I'm wondering if a transmission fluid and filter service (DSG service) might help, or if there's a specific TSB for this model.

Any S3 owners out there with similar experiences or advice?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 3:16 AM

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ClearTheCode admin answer:

Chris, your description of jerking and hesitation from the S-Tronic (DSG) transmission in your 2019 Audi S3 is a common concern for owners, and while some DSG characteristics are inherent, persistent issues warrant investigation.

  1. DSG Characteristics vs. Problems:

    • Normal Behavior: DSGs are known for quick shifts but can sometimes exhibit a slight 'clunk' or hesitation at very low speeds, particularly in stop-and-go traffic or during cold operation. This is often due to the dual-clutch mechanism engaging/disengaging.
    • Problematic Behavior: Excessive jerking, harsh shifts, delayed engagement, or grinding noises are not normal and suggest an underlying issue.

  2. Potential Causes:

    • DSG Fluid and Filter Service Overdue: The DSG transmission requires specific maintenance, typically every 40,000 miles (check your owner's manual for exact intervals). Old, contaminated fluid or a clogged filter can significantly impact shift quality and lead to wear.
    • Mechatronic Unit Issues: This is the control unit for the DSG, combining the transmission control module (TCM) and electro-hydraulic components. Failures here can cause erratic shifting. While less common on newer models, it's a known potential issue.
    • Clutch Pack Wear: Over time, the clutch packs can wear, leading to slippage or harsh engagement. This is more likely with aggressive driving or if the car has been tuned.
    • Software Glitches: Sometimes, a transmission control module (TCM) software update can resolve shifting anomalies.
    • OBD Codes: While you haven't seen any, a specialized Audi diagnostic tool can often pull specific transmission fault codes (e.g., P0700 - Transmission Control System Malfunction, or codes related to clutch pressure or sensor issues) that wouldn't trigger a generic check engine light.

  3. Recommended Actions:

    • DSG Service: If the 40,000-mile service hasn't been performed, this should be your first step. Ensure it's done by an Audi specialist using genuine Audi DSG fluid and filter.
    • Software Update: Ask the dealer to check for any available TCM software updates or TSBs related to transmission shifting for your specific model year.
    • Professional Diagnosis: If the issue persists after a service and software check, have an Audi dealership or a reputable independent Audi specialist perform a full diagnostic scan of the transmission system. They can monitor live data and pinpoint the exact cause of the harsh shifts. Ignoring severe symptoms can lead to more costly repairs down the line.
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