How To Fix BMW Airbag Warning Light

BMW airbag warning lights can be a headache, especially if you’re trying to sell your car or trade it in. But there’s no need for panic! In this guide, we’ll show you how to quickly and easily diagnose the problem with your BMW airbag light and how to fix it yourself if possible.

Disconnect The Battery

You will need to disconnect the battery. You can turn off your car, remove the negative terminal from underneath it, and attach a wire to it. Then attach another wire to the positive terminal and attach the two wires. This will allow you to reset your airbag light without having to reset any other computer systems on your vehicle.

Remove The Trim And Seat Cushion

With your first steps on the right path, you can now remove the trim around the seat and check it for any damage or wear. If there are cracks in the plastic, it will need to be replaced with a new trim piece. If there is wear in the fabric, you may want to consider having a professional take care of replacing that as well.

Next, remove your seat cushion and check for cracks or tear in this area. If there are any tears in either of these components, they should be replaced by an experienced technician so that your car remains safe to drive until repairs can be made on other structural issues (such as wiring).

Remove The Backrest Cover And Locate The Connector

Next, locate the connector and pull it out of its socket. To access this connector, you may need to remove other parts of your seat. For example: if you have a seatbelt or seat cushion that needs removal, do so now. This can be done using an appropriate tool (like a screwdriver). Using the right tools for the job; if you don’t have them at home, take your car to a shop instead! If necessary, also take apart any trim pieces that are in your way while trying to reach out connectors and wires—this will allow more free space around where they’re connected, so it’s easier for them/you when disconnecting things like cabling between modules inside vehicles.

Disassemble The Connector

Cut and clean the connector with a wire cutter, solder iron, and multimeter. First, use your wire cutters to cut one of the red wires (the one without any white or black insulation), then use them again on both ends of that same wire so you can see through it clearly, exposing its copper core inside; now take some solder and melt it over one end of this exposed piece until it forms a ball there (if you don’t have solder on hand, use tin foil instead). This should help keep all those tiny parts in place while being cleaned up. Next, turn off the power before disconnecting anything else inside this housing because electricity can still flow through even when devices aren’t plugged into each other, and we wouldn’t want anyone getting electrocuted while trying out their repair job.

Clean And Dry Both Wires In The Connector

Next, clean and dry both wires in the connector. Use a cotton swab dipped in isopropyl alcohol to remove any dirt or grime from the connectors. Let it dry for a few minutes, then use a clean, dry cloth to wipe off the excess alcohol and inspect for any remaining dust or dirt.

Reassemble The Connector

Before you reassemble the connector, check that all wires are not crossed and are secured properly. Check for any damage or corrosion on any of the wires and any loose connections in the connector itself. Make sure everything is in its correct position before putting it back together. Once the connector is reassembled, you should be able to remove the airbag warning light from your dashboard.


If the airbag warning light is still on, you may have a faulty wiring harness. Your only option at this point would be to contact your local BMW dealership and ask them to check out the issue for you.