TSB TSB-2074808 — Audi Service bulletin
TSB-2074808 is a service bulletin on file with NHTSA for 3 Audi models, 2013–2018 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. The high-voltage batteries in electric vehicles are subject to various ageing effects which could lead to the energy content (energy density) being reduced. This reduction in the energy content, which is due to factors. Revised header. Added Model years
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years TSB-2074808 names
| Vehicle | Model years |
|---|---|
| Audi A4 | 2013, 2014, 2015, 2016, 2017, 2018 |
| Audi Q5 | 2013, 2014, 2015, 2016, 2017, 2018 |
| Audi Q7 | 2013, 2014, 2015, 2017, 2018 |
Every document filed under TSB-2074808
| Document ID | Filed | Type |
|---|---|---|
| TSB_2074808_4 | May 6, 2026 | Service bulletin |
What TSB-2074808 covers
Transmission & drivetrain — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB TSB-2074808?
TSB-2074808 is a service bulletin filed with NHTSA by Audi, covering 3 Audi models across the 2013–2018 model years. NHTSA's summary reads: The high-voltage batteries in electric vehicles are subject to various ageing effects which could lead to the energy content (energy density) being reduced. This reduction in the energy content, which is due to factors. Revised header. Added Model years
Which vehicles does TSB-2074808 cover?
NHTSA's file names Audi A4 (2013–2018); Audi Q5 (2013–2018); Audi Q7 (2013–2015, 2017–2018). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.
Is TSB TSB-2074808 a recall, and is the repair free?
No. TSB-2074808 is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.
How do I get the full text of TSB-2074808?
Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under TSB-2074808, its date, and NHTSA's own summary from the public file.
Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under TSB-2074808. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.