HomeElectrical, Charging and Starting > SensorsStandard Ignition BSC89 Battery Current Sensor
Part #: BSC89

Standard Ignition BSC89 Battery Current Sensor

⚙️ 29 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: BMW and Mini, Z4, 128i, 135i, and Cooper
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Overview of Standard Ignition Battery Current Sensor BSC89

The Standard Ignition Battery Current Sensor BSC89 is designed for precise monitoring of battery current in select BMW and Mini vehicles. This sensor ensures accurate electrical system performance by providing reliable current data to the vehicle’s control modules.

  • Connector Gender: Female
  • Connector Quantity: 1
  • Connector Shape: Oval
  • Terminal Gender: Male
  • Terminal Quantity: 3
  • Terminal Type: Blade

Technical Details and Compatibility

This battery current sensor features a single female oval connector and three male blade terminals, engineered for secure and stable electrical connections. The design supports efficient current measurement and communication with the vehicle’s charging and starting systems. Compatible with BMW models such as 128i, 135i, and Z4, as well as Mini Cooper models, the BSC89 sensor integrates seamlessly with the original equipment electrical architecture.

Function and Application

The Standard Ignition BSC89 sensor is used to monitor the flow of electrical current from the battery, providing critical data to the vehicle’s engine control unit (ECU) and charging system. This helps maintain optimal battery performance and prevents electrical faults.

  • Detects irregular battery current flow
  • Prevents battery drain issues
  • Supports accurate charging system diagnostics
  • Helps avoid starting system failures
  • Ensures proper electrical system operation

Installation Notes and Tips

When installing the BSC89 battery current sensor, ensure the female oval connector is securely attached to the vehicle wiring harness. Verify that the three male blade terminals are properly seated to avoid loose connections. It is recommended to disconnect the battery before installation to prevent electrical shorts. Follow vehicle-specific service manual instructions for sensor replacement on BMW 128i, 135i, Z4, and Mini Cooper models.

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. The BSC89 battery current sensor undergoes rigorous quality control testing. Warranty coverage details should be confirmed with the product documentation or supplier.

BrandStandard Ignition
Part NumberBSC89
Connector GenderFemale
Connector ShapeOval
Terminal GenderMale
Terminal TypeBlade

This part fits 29 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersPositionNotes
2016BMWZ4N/ANegative Side
2015BMWZ4N/ANegative Side
2014BMWZ4N/ANegative Side
2013BMW128iN/ANegative Side
2013BMW135iN/ANegative Side
2013BMWZ4N/ANegative Side
2012BMW128iN/ANegative Side
2012BMW135iN/ANegative Side
2012BMWZ4N/ANegative Side
2011BMW128iN/ANegative Side
2011BMW135iN/ANegative Side
2011BMWZ4sDrive30i3.0LL6N/ANegative Side
2011BMWZ4sDrive35i3.0LL6N/ANegative Side
2011BMWZ4sDrive35is3.0LL6N/ANegative Side
2011MiniCooperN/ANegative Side
2010BMW128iN/ANegative Side
2010BMW135iN/ANegative Side
2010BMWZ4sDrive30i3.0LL6N/ANegative Side
2010BMWZ4sDrive35i3.0LL6N/ANegative Side
2010MiniCooperN/ANegative Side
2009BMW128iN/ANegative Side
2009BMW135iN/ANegative Side
2009BMWZ4sDrive30i3.0LL6N/ANegative Side
2009BMWZ4sDrive35i3.0LL6N/ANegative Side
2009MiniCooperN/ANegative Side
2008BMW128iN/ANegative Side
2008BMW135iN/ANegative Side
2008MiniCooperN/ANegative Side
2007MiniCooperN/ANegative Side

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

010562931601-25361127616199BCSB10053CTB91SBC90

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.