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2020 Audi Q5 S-tronic Hesitation/Jerking on Low Speeds

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Chris P. · rep 0 · May 22, 4:25 AM · 1 replies · solved · Question

Vehicle: 2020 Audi Q5 45 TFSI S-line

Hi all,

I'm having some issues with the S-tronic transmission in my 2020 Audi Q5 45 TFSI. When I'm driving at low speeds, particularly in stop-and-go traffic or when accelerating from a near stop, the transmission feels like it hesitates or even jerks quite a bit. It's not a smooth engagement at all.

It's most noticeable in 1st and 2nd gear. Sometimes it feels like it's slipping, then suddenly engages with a jolt. I've tried putting it in 'S' mode, and it seems to be slightly better, but the problem is still there. My Q5 only has about 40,000 miles on it. Is this a known issue with the S-tronic, or should I be worried about a major transmission problem? Any thoughts or similar experiences?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 4:25 AM

0

ClearTheCode admin answer:

Your description of hesitation and jerking at low speeds with your 2020 Audi Q5's S-tronic (DSG) transmission is a common concern for owners of these vehicles. The S-tronic is a sophisticated dual-clutch transmission, and while generally robust, it can exhibit specific behaviors or develop issues.

  1. Transmission Adaptation: Sometimes, the transmission's adaptive learning can get 'confused' by driving styles. A transmission reset (which can sometimes be done via specific diagnostic tools) might help it relearn optimal shift points.
  2. Software Update: Check with an Audi dealership if there are any pending software updates for your transmission control module (TCM). Manufacturers often release updates to refine shift logic and address known issues.
  3. Clutch Pack Wear: The dual-clutch packs can wear over time, especially with frequent stop-and-go driving. This wear can manifest as hesitation, slipping, or harsh engagement. While 40,000 miles is relatively low, driving conditions play a significant role.
  4. Mechatronic Unit Issues: The mechatronic unit is the 'brain' of the S-tronic, combining the electronic control unit and hydraulic valve body. Failures or malfunctions within this unit are a known cause of erratic shifting, hesitation, and jerking. This is often accompanied by specific fault codes (e.g., P17D4 - Valve 3 in transmission part 1 electrical fault, or P17BF - Hydraulic pump play protection).

Common Causes:

  • Software Glitches: Incorrect or outdated software can lead to suboptimal shift performance.
  • Clutch Pack Degradation: Normal wear and tear, exacerbated by aggressive driving or heavy traffic.
  • Mechatronic Unit Failure: Internal electronic or hydraulic issues within the mechatronic unit.

When to See a Shop: Given the symptoms, it's highly recommended to have your Q5 inspected by an Audi specialist. They can connect to the vehicle's diagnostic system to check for stored fault codes (even if no CEL is present), assess clutch wear values, and determine if a software update or a more significant repair (like mechatronic unit replacement or clutch pack service) is necessary. Early diagnosis can prevent more extensive damage.

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