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Standard Ignition BSC89 Battery Current Sensor
| Brand | Standard Ignition BSC89 |
|---|---|
| Connector Gender | Female |
| Connector Shape | Oval |
| Terminal Gender | Male |
| Terminal Type | Blade |
| Fits | BMW and Mini · 29 vehicles |
Battery current sensor. Monitors electrical current in the charging and starting system.
Female oval connector. Features a single connector with three blade terminals.
Cross-references Standard Ignition BSC89, 12427564490 and BCSB10053 for the same application. See all 5.
Battery Current Sensor for BMW and Mini
Standard Ignition BSC89 is a battery current sensor for negative-side battery monitoring on select BMW and Mini applications. It uses a female oval connector with three male blade terminals to support the vehicle’s charging and starting system signal path.
Key Features
- Battery current sensor for negative-side installation
- Female oval connector for a direct electrical interface
- Three male blade terminals for secure circuit connection
- Fits select BMW Z4, BMW 128i, BMW 135i, and Mini Cooper applications
- Standard Ignition BSC89 replacement part number for service matching
Detailed Description
Standard Ignition BSC89 is an electrical sensor used in the charging system to monitor battery current on the negative side of the battery circuit. This sensor is specified for 2009-2016 BMW Z4, 2008-2013 BMW 128i, 2008-2013 BMW 135i, and 2007-2011 Mini Cooper applications. The connector design includes one female oval connector and three male blade terminals, which helps match the original electrical interface on the vehicle.
This part cross-references BMW 12427564490 for the same application. Standard Ignition BSC89 is a direct-fit service part for vehicles that use a negative-side battery current sensor in the charging system.
What It Is Used For
- Replacing a failed battery current sensor in the charging system
- Restoring battery current monitoring on negative-side circuits
- Addressing charging system warning messages
- Correcting inaccurate battery state-of-charge readings
- Resolving electrical faults tied to battery current sensing
Installation Notes and Tips
Verify the connector shape, terminal style, and negative-side mounting location before installation. Confirm the vehicle application by year, make, and model, especially on BMW Z4, BMW 128i, BMW 135i, and Mini Cooper platforms. After installation, clear any stored charging system codes and recheck system operation.
Quality Assurance
Standard Ignition is a recognized aftermarket source for electrical service parts, and BSC89 is built to match the specified connector and terminal configuration for the listed applications.
| Year | Make | Model | Submodel | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2016 | BMW | Z4 | — | — | — | N/A | Negative Side |
| 2015 | BMW | Z4 | — | — | — | N/A | Negative Side |
| 2014 | BMW | Z4 | — | — | — | N/A | Negative Side |
| 2013 | BMW | 128i | — | — | — | N/A | Negative Side |
| 2013 | BMW | 135i | — | — | — | N/A | Negative Side |
| 2013 | BMW | Z4 | — | — | — | N/A | Negative Side |
| 2012 | BMW | 128i | — | — | — | N/A | Negative Side |
| 2012 | BMW | 135i | — | — | — | N/A | Negative Side |
| 2012 | BMW | Z4 | — | — | — | N/A | Negative Side |
| 2011 | BMW | 128i | — | — | — | N/A | Negative Side |
| 2011 | BMW | 135i | — | — | — | N/A | Negative Side |
| 2011 | BMW | Z4 | sDrive30i | 3.0L | L6 | N/A | Negative Side |
| 2011 | BMW | Z4 | sDrive35i | 3.0L | L6 | N/A | Negative Side |
| 2011 | BMW | Z4 | sDrive35is | 3.0L | L6 | N/A | Negative Side |
| 2011 | Mini | Cooper | — | — | — | N/A | Negative Side |
| 2010 | BMW | 128i | — | — | — | N/A | Negative Side |
| 2010 | BMW | 135i | — | — | — | N/A | Negative Side |
| 2010 | BMW | Z4 | sDrive30i | 3.0L | L6 | N/A | Negative Side |
| 2010 | BMW | Z4 | sDrive35i | 3.0L | L6 | N/A | Negative Side |
| 2010 | Mini | Cooper | — | — | — | N/A | Negative Side |
| 2009 | BMW | 128i | — | — | — | N/A | Negative Side |
| 2009 | BMW | 135i | — | — | — | N/A | Negative Side |
| 2009 | BMW | Z4 | sDrive30i | 3.0L | L6 | N/A | Negative Side |
| 2009 | BMW | Z4 | sDrive35i | 3.0L | L6 | N/A | Negative Side |
| 2009 | Mini | Cooper | — | — | — | N/A | Negative Side |
| 2008 | BMW | 128i | — | — | — | N/A | Negative Side |
| 2008 | BMW | 135i | — | — | — | N/A | Negative Side |
| 2008 | Mini | Cooper | — | — | — | N/A | Negative Side |
| 2007 | Mini | Cooper | — | — | — | N/A | Negative Side |
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