2021-2024 Audi USB Trim Detached and Other Issues

This document from Audi, dated July 7, 2023, is an on-car analysis list providing diagnostic guidance for a range of common issues affecting various Audi models from 2021 to 2024, including the Audi e-tron. It outlines specific symptoms, associated fault codes, and required documentation for technicians to address these concerns effectively. Owners experiencing issues like an Audi e-tron USB trim detached or other electrical and mechanical problems should be aware of this communication.

Important Note for Technicians and Owners

Audi emphasizes that their Helpline should be contacted before attempting any repair related to these topics. All issues discussed have associated worksheets that must be filled out and attached to the TAC (Technical Assistance Center) ticket. These worksheets are crucial for proper diagnosis and resolution and can be found on ServiceNet under Technician References>>Vin-4-Pin>>Worksheets.

Symptoms and Issues Covered

This analysis list details several distinct problems that owners might encounter across various Audi models:

• Coolant Warning Lamp: For 2020-2021 Audi Q3 models, owners may see a low coolant warning in the instrument cluster, even when the coolant level appears full in the reservoir. Audi notes that this specific case does not relate to TSB 2061918. Technicians are advised to provide a photo showing the reservoir level.
• Abnormal or No Sound from Engine Sound Generator: Affecting all Audi models with the 3.0L EA839 engine from 2021-2023, this involves unusual or absent noise from the engine sound generator. Diagnosis requires video/sound recordings of the abnormal noise before and after repair, running a sound actuator test, and uploading a GFF log with executed tests and relevant DTCs.
• Valve Cover Leak: Observed in 2017-2023 Audi Q5 2.0L models, this issue involves oil leaking from the valve cover. Audi notes that three cases are needed with no previous repairs to cover this under warranty (NVLW).
• Low Fuel Pressure (DTC P008700): Applicable to 2019-2023 Audi Q3 models, this is indicated by DTC P008700. Technicians must attach a completed worksheet on initial TAC contact.
• Oil Pan Leak: For 2020-2023 Audi Q3 models, an oil leak is found coming from the oil pan.
• Belt Noise from Starter Generator: This issue affects 2023 Audi Q5 models, manifesting as noise from the starter generator during starting or while running. Documentation should include an audio/video recording of the noise and details on ambient conditions like temperature and humidity.
• Boost Pressure Sensor Issues: In 2022 Audi Q3 2.0 models, a check engine lamp may illuminate with DTCs P010600, P023600, P023700, or P023800. Diagnosis requires documentation including a wiggle test harness, checking pin fitment and drag, circuit resistance, and photos of findings. A specific Q3 Boost pressure sensor worksheet is also required.
• MMI Ghost Touches and Clicking Noises: For 2023 Audi Q3 models, the MMI display may switch screens by itself, make permanent clicking noises, or exhibit "ghost touches" where it appears to press buttons autonomously. A video of the "ghost touches occurring" is required.
• Battery Voltage Warning: Affecting 2022-2024 Audi A3 models, this issue is associated with a Belt Starter Generator DTC U046900 with symptom code 26950 in the ECM. On-site or data logger installation may be required, but no DTC is expected in the BSG.
• USB Trim Detached: For 2022-2024 Audi A3 models, the USB trim panel may be pushed in, loose, or detached from the center console. While the focus keyword is Audi e-tron USB trim detached, this specific entry in the analysis list refers to the A3. Owners of any affected Audi model, including the Audi e-tron, should consult their dealer if they experience a detached USB trim.
• Noise from Front Door Trim Panel / Speaker Grill: For 2021-2022 Audi e-tron Quattro and e-tron SB models, this involves noise from the front door trim panel while driving. A video of the noise before repair and photos of the repair are required. The document also mentions photos of both sides of the thorax/side airbag wire harness label.

Fault Codes and Associated Symptoms

The document references several Diagnostic Trouble Codes (DTCs) linked to specific issues:

Code	Description / Associated Symptom	Applicable Model(s)
P008700	Low fuel pressure	Audi Q3
P010600	Boost pressure sensor issue (Check Engine Lamp)	Audi Q3
P023600	Boost pressure sensor issue (Check Engine Lamp)	Audi Q3
P023700	Boost pressure sensor issue (Check Engine Lamp)	Audi Q3
P023800	Boost pressure sensor issue (Check Engine Lamp)	Audi Q3
U046900	Belt Starter Generator (Symptom 26950 in ECM)	Audi A3

Owner Action

If you own a 2021-2024 Audi model and are experiencing any of the symptoms described, such as an Audi e-tron USB trim detached, coolant warnings, unusual engine noises, or MMI display issues, it is recommended to contact your authorized Audi dealership. They have access to the detailed diagnostic procedures and worksheets outlined in this analysis list. Providing clear descriptions of the symptoms, and any relevant photos or videos, can assist technicians in diagnosing the problem efficiently.

Required Documentation for Technicians

The document repeatedly emphasizes the need for specific documentation to aid in diagnosis and warranty claims. This includes:

• Photos showing reservoir levels (for coolant warning).
• Video/sound recordings of abnormal noises (engine sound generator, starter generator, door trim panel).
• GFF log uploads with executed tests and relevant DTCs.
• Completed worksheets (e.g., for P008700, Boost pressure sensor).
• Documentation of wiggle tests, pin fitment, pin drag, and circuit resistance.
• Photos of findings and repairs.
• Video of "ghost touches" for MMI issues.
• Photos of thorax/side airbag wire harness labels.

This comprehensive documentation ensures that technicians follow proper diagnostic steps and that issues are accurately recorded for Audi's technical support.

---

Source: NHTSA ID: 10239668