Can’t start your BMW due to a dead battery? This guide provides step-by-step instructions on changing the BMW 3-Series E90 E91 E92 E93 battery.
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
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- 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. Remove the key from the ignition before replacing the car battery on your BMW 3-Series. BMW can be sensitive to voltage drops, and keeping the key in the ignition can cause electrical problems.
- Locate the battery and open the 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 the battery terminals of your BMW 3-Series using a terminal brush. This will ensure a good connection between the clamp and the 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 the 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. You can use the YOUCANIC Full System Scanner to register the BMW Battery.
These steps apply to the 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.