Standard Ignition BSC84 Battery Current Sensor

Battery Current Sensor for BMW Charging Systems

Standard Ignition BSC84 is a battery current sensor used in BMW charging and starting systems to monitor battery current and voltage data. It is built with a female rectangular plug-in connector, a male blade terminal design, and a direct-fit electrical layout for service replacement.

Key Features

• Battery current sensor for charging system monitoring
• Female connector with rectangular plug-in design
• Male blade terminals for secure electrical contact
• Direct replacement for BMW battery current / volt sensor applications
• Standard Ignition BSC84 for OE-style service fitment

Detailed Description

Standard Ignition BSC84 is a battery current sensor for BMW vehicles that rely on accurate battery current and voltage feedback for charging system control. This sensor uses a single rectangular female connector and two male blade terminals, matching the electrical interface used in the listed applications. It cross-references BMW 61217631106 and related replacement numbers such as BCSB10014 and CTB86 for the same application. Fits 2019 BMW 230i, N/A; Fits 2019 BMW 230i xDrive, N/A; Fits 2019 BMW 430i, N/A; Fits 2019 BMW 440i, N/A; Fits 2019 BMW 440i xDrive, N/A; Fits 2018-2019 BMW M2, N/A; Fits 2019 BMW M240i, N/A; and additional BMW 2 Series, 3 Series, 4 Series, and M models listed below.

What It Helps Address

• Charging system warning lights related to battery current sensing
• Incorrect battery state-of-charge readings
• Voltage regulation issues caused by a faulty sensor signal
• Battery management faults in BMW electrical systems
• Intermittent charging performance concerns tied to sensor failure

Installation Notes and Tips

Verify connector shape, terminal style, and vehicle application before installation. This part is listed for BMW models including 2011-2019 3 Series, 2014-2019 4 Series, 2016-2019 M2, M240i, M235i, and related variants. Confirm the original sensor part number and inspect the harness connector for corrosion, bent terminals, or heat damage before replacing the sensor.

Quality Assurance

Standard Ignition supplies replacement electrical components for service applications, and BSC84 is cataloged as a battery current sensor for the listed BMW fitments. This part is a direct-reference replacement for OE and aftermarket cross numbers used in the same application.