The essential answer is that the 12‑volt auxiliary battery in the 2021 Audi Q5 is located in the luggage compartment (the trunk) on the left side behind a removable panel. If you own the plug‑in hybrid Q5 TFSI e, the high‑voltage traction battery sits under the rear seat floor. For precise placement, always consult the owner's manual or your local Audi dealer, as layouts can vary by market and trim.
Battery locations by drivetrain
Below is a quick guide to where you will typically find each battery in the 2021 Q5 configurations.
- Standard Q5 (gasoline or mild‑hybrid): 12‑volt auxiliary battery located in the luggage compartment (trunk) on the left side behind a trim panel.
- Q5 TFSI e plug‑in hybrid: High‑voltage traction battery mounted under the rear seat floor; the 12‑volt battery is generally accessible from the engine bay in many markets.
Market and trim variations exist, so verify with your manual or dealer for your exact configuration.
Accessing and safety considerations
Because the high‑voltage system in a plug‑in hybrid requires specialized handling, do not attempt to service the traction battery yourself. For routine checks, follow the manufacturer’s guidance; only trained technicians should perform work on high‑voltage components.
- If you need to replace the 12‑volt battery or check connections, seek guidance from an Audi‑certified technician.
- Avoid touching high‑voltage cables and components unless you are authorized and trained.
With proper care, locating the batteries is straightforward and can aid in routine maintenance and jump‑start scenarios.
What to do if you’re unsure
If you’re unsure about your exact configuration, use your VIN to verify with your local Audi dealer or consult the official owner’s manual for your market and trim. Battery layouts can vary by region and model year.
Summary
In short, the 2021 Audi Q5 typically places the 12‑volt auxiliary battery in the trunk on the left side, while the plug‑in hybrid Q5 TFSI e houses its large high‑voltage battery under the rear seat floor. Always check the owner’s manual or a certified Audi technician to confirm the exact arrangement for your vehicle.


