2021-2024 Audi e-tron Door Panel Noise and Other Common Issues TSB

This Audi "On-car analysis list" serves as a technical service bulletin (TSB) providing diagnostic guidance for a range of common issues affecting various 2021-2024 Audi models. It covers symptoms from warning lights and unusual noises, such as the specific 'Audi e-tron door panel noise', to engine performance problems and fluid leaks. This document helps technicians efficiently diagnose and address these concerns, ensuring proper documentation and initial steps are followed.

Important Warnings for Owners and Technicians

Audi emphasizes that the Audi Helpline should be contacted before any repair attempts are made. This ensures that the latest diagnostic procedures and support are utilized.

All topics discussed in this bulletin have associated worksheets. These worksheets must be thoroughly filled out and attached to the Technical Assistance Center (TAC) ticket. Technicians can find these essential worksheets on ServiceNet under "Technician References>>Vin-4-Pin>>Worksheets".

Common Symptoms and Affected Models

This TSB outlines several distinct issues, each with specific symptoms and applicable Audi models and model years:

• Coolant Warning Lamp: Owners of 2020-2021 Audi Q3 models may see a low coolant warning in the instrument cluster, even if the coolant reservoir appears to be full. This issue is noted as not related to TSB 2061918.
• Catalytic Converter Inspection (DTC P042000): For 2019-2023 Audi A6, A7, Q7, Q8, S4, and S5 models equipped with the 3.0L engine, a "Check engine lamp on" might indicate a "Catalyst System, Bank1 Efficiency Below" fault, corresponding to DTC P042000.
• Abnormal/No Sound from Engine Sound Generator: Owners of 2021-2023 Audi models with the 3.0L EA839 engine may experience abnormal or a complete lack of sound from the engine sound generator. This can affect the perceived engine noise inside the cabin.
• Valve Cover Leak: A leaking valve cover has been identified in 2017-2023 Audi Q5 models with the 2.0L engine. Audi notes that three cases are needed with no previous repairs and must be within the New Vehicle Limited Warranty (NVLW) period.
• Low Fuel Pressure (DTC P008700): 2019-2023 Audi Q3 models may experience low fuel pressure, triggering DTC P008700. This applies specifically to Q3 models still under NVLW.
• Oil Pan Leak: An oil leak originating from the oil pan has been observed in 2020-2023 Audi Q3 models.
• Boost Pressure Sensor (DTCs P010600, P023600, P023700, P023800): If the check engine lamp is illuminated in 2022 Audi Q3 2.0 models, it could be due to issues with the boost pressure sensor, indicated by DTCs P010600, P023600, P023700, or P023800.
• Battery Voltage Warning (DTC U046900): 2022-2024 Audi A3 models may display a battery voltage warning, often associated with DTC U046900 (symptom 26950) in the Engine Control Module (ECM) or Battery Sensor Gateway (BSG).
• USB Trim Detached: In all 2023 Audi models, the USB trim panel may be found pushed in, loose, or completely detached from the center console.
• Noise from Front Door Trim Panel: Owners of 2021-2022 Audi e-tron Quattro and e-tron SB models may report hearing an unusual noise originating from the front door trim panel while driving. This is the specific 'Audi e-tron door panel noise' issue.
• Noise from Front Door Speaker Grill: 2021-2022 Audi A5 models may also experience noise emanating from the front door speaker grill.

Diagnostic Trouble Codes (DTCs)

This TSB references several specific Diagnostic Trouble Codes that may appear in conjunction with the reported symptoms:

Code	Description / Symptom	Affected Component / Module
P042000	Catalyst System, Bank1 Efficiency Below	Catalytic Converter
P008700	Low fuel pressure	Fuel System
P010600	Boost pressure sensor	Boost Pressure Sensor
P023600	Boost pressure sensor	Boost Pressure Sensor
P023700	Boost pressure sensor	Boost Pressure Sensor
P023800	Boost pressure sensor	Boost Pressure Sensor
U046900	Battery voltage warning (symptom 26950)	ECM / BSG

Initial Diagnostic Guidance

For each issue, Audi provides specific instructions for technicians to follow, primarily focusing on documentation and initial checks:

• Coolant Warning Lamp: Technicians are instructed to check the coolant level and take a photo of the reservoir. They should also note that this specific issue does not relate to TSB 2061918.
• Catalytic Converter Inspection: A GFF Log (Guided Fault Finding) with all fault codes and completed test plans is required. Technicians must also collect oil and fuel samples (using hazmat containers requested via TAC) and change the oil and filter after sampling. A VIN-4-Pin Worksheet with answers to questions is also necessary.
• Engine Sound Generator Noise: Before and after any repair, technicians must record video or sound of the abnormal noise. They also need to upload a GFF log with executed tests and relevant DTCs.
• Valve Cover Leak: This issue requires documentation of three cases with no previous repairs, and the vehicle must be within the NVLW period.
• Low Fuel Pressure: For DTC P008700, a completed worksheet must be attached during the initial TAC contact.
• Oil Pan Leak: Documentation should confirm that the oil leak is indeed coming from the oil pan.
• Boost Pressure Sensor: If DTCs P010600, P023600, P023700, or P023800 are present, documentation needed includes a wiggle test of the harness, checks for pin fitment and drag, circuit resistance measurements, and photos of findings. A Q3 Boost pressure sensor worksheet is also required.
• Battery Voltage Warning: For DTC U046900, on-site or data logger installation may be required for further diagnosis.
• USB Trim Detached: Documentation should note if the USB trim panel is pushed in, loose, or detached from the center console.
• Noise from Front Door Trim Panel: To diagnose the 'Audi e-tron door panel noise', technicians must record a video of the noise before repair and provide photos of the repair.
• Noise from Front Door Speaker Grill: Photos of both sides of the thorax/side airbag wire harness label (Figures 2 and 3 in the original document) are required.

What Owners Should Do

If you are experiencing any of these symptoms in your 2021-2024 Audi model, especially if you notice an 'Audi e-tron door panel noise' or a check engine light, it is crucial to contact your authorized Audi dealership or the Audi Helpline immediately. Do not attempt repairs yourself. Ensure you can clearly describe the symptoms and conditions under which they occur. Your dealership will follow the diagnostic procedures outlined in this technical service bulletin to accurately identify and resolve the issue.

Source: NHTSA ID 10242978