Where Is the Battery on a 2014 Audi A4?

The main 12‑volt battery on a 2014 Audi A4 is located in the trunk (boot), on the right-hand side, beneath a removable trim panel; it is not under the hood as in many older cars. This layout can surprise owners expecting to find the battery in the engine bay, but Audi’s packaging and weight-distribution choices put it at the rear of the vehicle instead.

Understanding the Battery Location in the 2014 Audi A4

The 2014 Audi A4, built on the B8/B8.5 platform, routes most of its electrical power from a rear-mounted battery. While you can find jump-start terminals under the hood, the actual 12‑volt battery that you would replace or disconnect is mounted in the trunk. Knowing this saves time when troubleshooting electrical issues or planning a battery replacement.

Primary Battery Location: In the Trunk

On the 2014 Audi A4 sedan and Avant (wagon where applicable), Audi places the main battery in the luggage compartment. The mounting location is designed for protection, accessibility through interior panels, and improved vehicle balance.

Exact Position in the Trunk

The battery is not visible at first glance when you open the trunk. Instead, it is hidden behind trim on the right side of the cargo area, near the rear wheel well. Access generally requires lifting or removing a side cover rather than the floor panel, which is often used for the spare tire or inflator kit.

The following list describes where and how to find the battery once you open the trunk of a 2014 Audi A4.

• Open the trunk lid: Stand at the rear of the car and open the trunk in the normal way using the exterior handle, key fob, or button in the cabin.
• Look to the right side panel: On the passenger side (in left-hand-drive markets such as the U.S. and most of Europe), find the carpeted or plastic trim panel on the right wall of the trunk.
• Locate the removable access cover: There is usually a small, shaped panel or flap that can be pulled away, unsnapped, or unclipped to reveal the compartment behind it.
• Identify the battery compartment: Behind that panel you will see the 12‑volt battery secured with a bracket, along with the positive and negative terminals, and sometimes additional fuses or power distribution blocks.
• Check for any insulating covers: Some versions have a protective plastic or fabric cover over the top of the battery; this can be lifted or unclipped to access the terminals fully.

Once this side panel is opened, the battery is easy to see and reach; the design keeps the luggage area flat and usable while still allowing straightforward service access on the right-hand side.

Differences by Body Style and Market

For most mainstream 2014 Audi A4 configurations (sedan and Avant, gasoline and diesel), the battery placement remains consistent: in the trunk, right-hand side. Variants like the S4 performance model of the same generation also typically share this rear-mounted arrangement. Market-specific details such as small differences in trim or the presence of a tire inflator kit versus a spare tire do not usually change the core battery location, though the exact shape of the access panel can vary slightly.

Why the Battery Is Not Under the Hood

Owners often expect to find the battery in the engine compartment, but on the 2014 Audi A4 it has been relocated to the rear. This is the result of engineering decisions aimed at performance, packaging, and component protection.

Reasons for Rear-Mounted Battery Placement

The following points explain why Audi chose the trunk as the primary battery location for the 2014 A4 rather than the engine bay.

1. Improved weight distribution: Moving the heavy battery to the rear helps balance the vehicle’s front-heavy layout (due to the engine and transmission), improving handling and stability.
2. Protection from engine heat: Keeping the battery away from high under‑hood temperatures can improve its longevity and performance, as excess heat accelerates battery wear.
3. Space optimization: The engine bay of a modern Audi is densely packed with turbochargers, emission systems, and electronics, so relocating the battery frees up room for other components.
4. Noise and packaging design: Trunk placement allows Audi to use more sound insulation and cleaner layouts around the firewall and dash area, contributing to cabin refinement.
5. Common premium-car practice: Many premium European brands (BMW, Mercedes, Audi) use rear-mounted batteries for similar reasons, creating consistent design and service approaches across models.

Taken together, these factors make a rear-mounted battery a logical choice for the A4’s engineering goals, even if it is less intuitive for owners used to traditional engine-bay locations.

Jump-Starting vs. Accessing the Actual Battery

The existence of under-hood jump-start terminals can cause confusion: owners sometimes assume those points indicate the physical battery location. In reality, they are simply convenient connection points linked to the trunk-mounted battery via heavy cables.

Under-Hood Jump Terminals

Audi typically provides designated jump-start posts in the engine compartment for safety and convenience, so that jump leads do not need to be run into the trunk or directly onto the battery in tight spaces.

The list below explains the relationship between the engine-bay terminals and the trunk-mounted battery, and how they are typically used.

• Positive jump terminal under the hood: In the engine bay, there is usually a dedicated positive (+) post, often covered by a red plastic cap, intended for attaching a jumper cable or booster pack.
• Ground point in the engine bay: Instead of using the battery’s negative terminal, Audi normally specifies a solid metal grounding point in the engine bay for the negative (−) cable clamp.
• Cables routed to rear battery: Heavy-gauge cables run from these front terminals back to the trunk-mounted battery, allowing current flow without direct battery access.
• Battery still physically in the trunk: Even though you jump-start from the front, any battery replacement, testing, or disconnection still occurs at the battery itself in the trunk compartment.
• Safety and convenience: Front terminals reduce the need to open the luggage area in awkward conditions (e.g., car nose-in in a tight garage) and lower the risk of sparks near luggage or flammable items stored in the trunk.

These dedicated posts mean you can safely jump-start or support the vehicle’s electrical system from under the hood, while remembering that the battery you would service or replace remains in the right side of the trunk.

How to Access the Battery for Replacement or Inspection

When the time comes to check, charge, or replace the battery in a 2014 Audi A4, you will need to work from the trunk rather than the engine bay. The process is generally straightforward but should be done carefully to avoid damaging the car’s electronics.

General Access Steps (Overview)

The following steps outline how an owner or technician typically accesses the battery in the trunk of a 2014 Audi A4. Always follow the specific instructions in the vehicle’s owner’s manual and take proper safety precautions.

1. Open and secure the trunk: Ensure the trunk lid is fully open and the vehicle is parked on a flat surface with the ignition off.
2. Clear the right side cargo area: Remove any luggage, tools, or storage organizers that might obstruct the right-hand trim panel.
3. Remove the side trim panel: Gently pull back or unclip the right-side access panel to expose the battery compartment behind it.
4. Inspect the battery and connections: Once visible, check for corrosion on the terminals, ensure the hold-down bracket is secure, and look for any signs of leakage or damage.
5. Disconnect safely if needed: When replacing the battery, disconnect the negative (−) terminal first, then the positive (+), following standard safety practices and any Audi-specific procedures.

Handled carefully, this access method makes it possible to maintain or replace the battery without disturbing most of the trunk trim, minimizing disruption to the interior of the vehicle.

Key Takeaways

The 2014 Audi A4 hides its main 12‑volt battery in the trunk rather than under the hood, specifically on the right-hand side behind a removable trim panel. While you can use front-mounted jump-start points in the engine bay, any direct work on the battery—inspection, charging at the terminals, or replacement—must be done in the trunk. Audi’s decision supports better weight distribution, component protection, and packaging, even if it requires owners to look beyond the engine compartment when dealing with battery-related issues.

Summary

On a 2014 Audi A4, the battery is mounted in the trunk, on the right-hand side, behind a removable interior panel near the wheel arch; it is not located under the hood. You use convenient jump-start terminals in the engine bay for boosting the car, but for any actual battery service you access it from the trunk. This rear placement reflects Audi’s engineering priorities—balancing weight, protecting the battery from heat, and optimizing engine-bay space—while still offering straightforward access once you know where to look.

How to replace a 2013 Audi A4 battery?

Cover or spare wheel release the two catches and remove the cover that sits over the battery negative terminal loosen the clamp nut and disconnect the battery negative lead from the terminal.

What kind of battery is in the 2014 Audi A4?

Duralast Gold Group Size 94R H7 Battery H7-DLG.

Is the Audi A4 battery in the trunk?

It. It’s in the back in the trunk just like that. So now you.

How to jumpstart a 2014 Audi A4?

So you’ll connect your positive. Here. With your jumper cable. And your negative is going to be over here on the strut tower. And connect that there and I’m using my GB70.