Can’t start your BMW due to a dead battery? This guide provides step-by-step instructions on changing the battery on BMW 3-Series E90 E91 E92 E93.
To change the battery on BMW 3-Series, you will need a few basic tools, including 10mm, and 13mm sockets, a ratchet, and a terminal cleaning brush. Note that you must also carry out the battery registration procedure.
Before you get started
- The smallest battery you can install on the 3-series would be an H6, L3, or Group 48 battery with minimum cold-cranking amps of 570 A.
- If your BMW 3-Series battery has died, performing a charging system test is important to verify the battery is the culprit.
- If the battery on your 3-series is over five years old, you should consider replacing it.
- If the new battery on your 3-Series drains again, it can be due to a parasitic draw.
What you will need
- Group H8 Battery
- Mechanic Tool Set Metric
- BMW Battery Registration Scan Tool
- Remove the key from the ignition. Before replacing the car battery on your BMW 3-Series, remove the key from the ignition. BMW can be sensitive to voltage drops, and keeping the key in the ignition can cause electrical problems.
- Locate battery. Open trunk. In your BMW 3-Series, the battery is located in the trunk. To access the battery, you need to remove the cover on the right side of the trunk.
- Remove the panel to access the battery.
- Disconnect the negative cable. Start by disconnecting the negative battery terminal on your BMW.
- Disconnect positive cable. Be careful to avoid any shorts between the positive and negative battery terminals.
- Remove the battery bracket. Here is a close-up of the battery bracket on your BMW 3-Series.
- Clean battery terminals of your BMW 3-Series using a terminal brush. This will ensure a good connection between the clamp and battery post.
- Install the new battery and reconnect the battery terminals. First, connect the positive battery post to your BMW 3-Series. Lastly, connect the negative terminal. Use a battery fiber washer to prevent corrosion of the battery terminals.
- Protect Terminals. Spray battery terminal protector on the battery posts and clamps. A battery protector helps seal the metal surfaces. It helps reduce corrosion and improves current flow.
- Start the engine. Turn the steering wheel to the left and then to the right. Repeat this procedure several times to reset the steering angle sensor and the DSC light.
- Perform Battery Registration Follow the steps to perform BMW battery registration.
These steps apply to BMW
- 335d and M3 models were manufactured from 2004-2013.
- BMW 3-Series does not start
- The battery is dead and does not hold a charge
- 3-Series engine cranks very slow
- BMW has no power or lights
We hope you find the BMW 3-Series E90 E91 E92 E93 Battery Change Guide helpful. Check these troubleshooting and repair guides for more help on your BMW.