2021 Audi Q5 e High-Voltage Battery Deterioration TSB
Audi has released Technical Service Bulletin 2076982/1 for the 2021 Audi Q5 e, addressing issues related to high-voltage battery deterioration. Owners may see a yellow engine warning light or experience reduced electric range, with various DTCs logged.
Symptoms of High-Voltage Battery Deterioration
Owners of the 2021 Audi Q5 e may notice specific indicators related to high-voltage battery performance. The primary symptoms include the illumination of "The yellow engine warning lamp appears in the instrument cluster." This warning light signals a potential issue with the vehicle's powertrain or hybrid system.
Another common symptom reported is that "The remaining electric range displayed is too low." This indicates a reduction in the vehicle's ability to operate on electric power, suggesting a problem with the high-voltage battery's capacity or efficiency. These symptoms point towards potential Audi Q5 e high-voltage battery deterioration.
Diagnostic Trouble Codes (DTCs)
When diagnosing issues related to Audi Q5 e high-voltage battery deterioration, technicians may find several diagnostic trouble codes (DTCs) logged in the hybrid battery management control unit (diagnostic address 008C). These codes can be stored as either static (active) or intermittent (passive) entries.
| Diagnostic Trouble Code | Description | Storage State |
|---|---|---|
| P0BBD00 | Hybrid Battery Pack Voltage Variation Exceeded Limit | static, intermittent |
| P0A7F00 | Hybrid/EV Battery Pack "A" Deterioration | intermittent, static |
| P0EDD00 | Hybrid/EV Battery Pack "B" Deterioration | intermittent, static |
| P0EDE00 | Hybrid/EV Battery Pack "C" Deterioration | intermittent, static |
| P0EDF00 | Hybrid/EV Battery Pack "D" Deterioration | intermittent, static |
| P0EE000 | Hybrid/EV Battery Pack "E" Deterioration | intermittent, static |
| P0EE100 | Hybrid/EV Battery Pack "F" Deterioration | intermittent, static |
| P2CCC00 | Hybrid/EV Battery Pack "G" Deterioration | intermittent, static |
| P2CCD00 | Hybrid/EV Battery Pack "H" Deterioration | intermittent, static |
These DTCs are critical for identifying specific battery module deterioration or voltage imbalances within the high-voltage battery system.
Diagnosis and Technical Assistance
Audi has issued Transaction 2076982/1 as a "Reporting obligation pre repair" bulletin, released on February 20, 2025. This means the manufacturer is actively gathering information on these specific high-voltage battery issues before a final repair procedure is fully developed and released. For vehicles exhibiting symptoms of Audi Q5 e high-voltage battery deterioration and logging the associated DTCs, technicians are instructed to contact the Audi Technical Assistance Center (TAC) before attempting any part replacements.
This step is crucial for accurate diagnosis and to prevent unnecessary repairs. If your 2021 Audi Q5 e is still under the New Vehicle Limited Warranty, the dealer must contact a TAC consultant. They will need to attach the DTCs and a diagnostic log to a TAC Web Ticket for review.
Important Warnings for Owners
Owners should be aware that this Technical Service Bulletin (TSB), Transaction 2076982/1, is currently informational. It serves as a directive for dealers to collect data and consult with Audi's technical experts.
Audi has stated that "No changes to production have been made, as no issue has been identified" in terms of a production solution. Furthermore, this TSB "is informational only and not applicable to any Audi Warranty." This means that while Audi is investigating the issue, any repairs related to this condition may not be covered under standard warranty terms if a specific recall or extended warranty program is not later established.
What Owners Should Do
If you own a 2021 Audi Q5 e and are experiencing a "yellow engine warning lamp" or "remaining electric range displayed is too low," it is advisable to contact your authorized Audi dealer. Inform them of the symptoms and mention the possibility of Audi Q5 e high-voltage battery deterioration.
While this bulletin is for data collection, your dealer will follow the manufacturer's instructions to verify the condition and consult with the Audi Technical Assistance Center. This process helps Audi gather the necessary information to potentially develop a definitive solution for these high-voltage battery issues.
Source: NHTSA ID 11015765
Other revisions of this TSB
- 2021-2024 Audi Q5 e High-Voltage Battery Deterioration TSBP0A7F00, P0EDD00, P0EDE00
- 2021-2024 Audi Q5 e High-Voltage Battery Deterioration TSBP0BBD00, P0A7F00, P0EDD00
What Audi Q5 e owners report
Counted from the records in our database across 6 model years.
- 64
- Owner complaints
- 851
- Service bulletins
- 1
- Crashes reported
- 1
- Fires reported
- 3
- Injuries reported
The 2021 model year
29 complaints, the 1st most of 6 model years on file. Owners reported 0 crashes, 0 fires and 1 injury for this year.
Complaints by model year
| 2020 | 12 | |
|---|---|---|
| 2021 | 29 | |
| 2022 | 1 | |
| 2023 | 7 | |
| 2024 | 14 | |
| 2025 | 1 |
Most-reported systems
- Electrical System — 25
- Engine — 12
- Power Train — 9
- Forward Collision Avoidance — 8
- Service Brakes — 8
Recent owner reports
Vehicle Information: 2021 Audi Q5 Plug-in Hybrid (PHEV) e-quattro Component: Engine (Engine Block, Connecting Rod Bearings, Cylinders)Description of Incident:My 2021 Audi Q5 PHEV suffered a sudden, catastrophic internal engine failure.
Read owner complaints →On August 11th, 2026 right before noon, the sunroof on my Audi Q5 (hybrid, 2021 model) exploded without warning. Luckily noone was hurt but the explosion alone was enough to distract someone to run off the road.
Complaints are owner reports filed with NHTSA. They are unverified, and counts depend on how many vehicles were sold, so they are not a failure rate.
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