The 2014 Audi A5 stores its 12-volt auxiliary battery in the trunk, not under the hood. In most configurations, you’ll find it beneath the cargo-floor panel on the passenger side (the right-hand side in a left‑hand‑drive car). This placement keeps the battery away from heat and engine noise while making it relatively accessible for maintenance or replacement.
Location and rationale
How to access the battery
Below are the practical steps to locate and handle the battery in the 2014 Audi A5.
- Park on a level surface and engage the parking brake. Turn off the ignition and remove the key.
- Open the trunk and remove any cargo cover and floor mats to reveal the trunk floor panel.
- Lift or slide out the floor panel to expose the battery housing on the passenger side of the cargo area.
- Inspect the battery and terminals for corrosion or leaks. Confirm you have the correct 12V battery type for your model (AGM or flooded).
- Disconnect the negative (-) terminal first, using a wrench to loosen the clamp.
- Disconnect the positive (+) terminal.
- Remove the hold-down bracket or strap and lift the old battery out of its tray.
- Place the new battery in the tray, resecure the hold-down, and reconnect the positive terminal first, then the negative terminal.
- Replace the trunk floor panel and any mats or covers, then close the trunk.
Concluding: The battery is contained in the trunk under the floor panel on the passenger side, making maintenance straightforward with the right tools and precautions.
Note: If your A5 uses a start-stop system or an AGM battery, use the correct specification and consider having a professional perform replacement to avoid damage to electronics. Always disconnect the negative terminal first and follow safety procedures.
Summary
The 2014 Audi A5 places its 12-volt battery in the trunk, under the cargo floor panel on the passenger side (right side in U.S. left-hand-drive cars). Access is simple with the trunk floor removed: remove the battery, replace as needed, and reassemble. This setup keeps the battery shielded from heat and makes routine maintenance more convenient.