OE Quality
60-Day Returns

Standard Ignition BSC4 Battery Current Sensor
Overview of Standard Ignition Battery Current Sensor BSC4
The Standard Ignition Battery Current Sensor BSC4 is designed for precise monitoring of battery current in select Lexus and Toyota vehicles. This sensor ensures accurate electrical system performance, supporting optimal charging and starting functions in models like the Toyota Highlander and Lexus LS600h.
- Connector Gender: Female for secure connection
- Single rectangular plug-in connector for reliable fit
- Three male blade terminals for stable electrical contact
- Compatible with Lexus and Toyota hybrid and conventional models
- Part Number: BSC4 for easy identification and replacement
Detailed Product Description
The BSC4 battery current sensor from Standard Ignition features a female connector with a rectangular shape designed for plug-in installation. It includes one connector and three male blade terminals, providing a robust and dependable electrical interface. This sensor is engineered to accurately measure battery current, which is critical for the charging and starting systems in vehicles such as the Toyota Prius, Highlander, Lexus HS250h, and LS600h. The precise design of the connector and terminal types ensures compatibility and ease of installation, reducing the risk of electrical faults.
Compatible Vehicles and Applications
This battery current sensor is compatible with the following makes and models:
- Toyota Highlander
- Toyota Prius
- Lexus HS250h
- Lexus LS600h
It is specifically designed to support the electrical and hybrid systems in these vehicles, helping maintain proper battery function and vehicle performance.
Common Issues Addressed by the Battery Current Sensor
- Inaccurate battery current readings causing charging system errors
- Intermittent starting problems related to battery monitoring
- Electrical system warning lights triggered by sensor faults
- Reduced battery life due to improper current regulation
- Hybrid system performance issues in compatible Lexus and Toyota models
Installation Notes and Tips
When installing the Standard Ignition BSC4 sensor, ensure the female rectangular plug-in connector is securely attached to the vehicle harness. Verify that the three male blade terminals are properly seated to maintain stable electrical contact. It is recommended to disconnect the battery before installation to prevent electrical shorts. Proper alignment and connection will help avoid sensor errors and ensure accurate battery current monitoring.
Quality Assurance and Warranty
Standard Ignition parts are manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. The BSC4 battery current sensor undergoes rigorous quality control testing to maintain consistent functionality. Warranty coverage details should be confirmed with the distributor or vehicle manufacturer, as they may vary by region and application.
| Brand | Standard Ignition |
| Part Number | BSC4 |
| Connector Gender | Female |
| Connector Shape | Rectangular |
| Connector Type | Plug In |
| Terminal Gender | Male |
| Terminal Type | Blade |
This part fits 15 vehicles. Search below:
| Year | Make | Model | Submodel | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2016 | Lexus | LS600h | N/A | ||||
| 2015 | Lexus | LS600h | N/A | ||||
| 2014 | Lexus | LS600h | N/A | ||||
| 2013 | Lexus | LS600h | N/A | ||||
| 2012 | Lexus | HS250h | 2.4L | L4 | N/A | ||
| 2011 | Lexus | HS250h | 2.4L | L4 | N/A | ||
| 2010 | Lexus | HS250h | 2.4L | L4 | N/A | ||
| 2009 | Toyota | Prius | N/A | w/ White Housing | |||
| 2008 | Toyota | Prius | N/A | w/ White Housing | |||
| 2007 | Toyota | Highlander | Hybrid | 3.3L | V6 | N/A | w/ Plastic Housing |
| 2007 | Toyota | Prius | N/A | w/ White Housing | |||
| 2006 | Toyota | Highlander | Hybrid | 3.3L | V6 | N/A | w/ Plastic Housing |
| 2006 | Toyota | Prius | N/A | w/ White Housing | |||
| 2005 | Toyota | Prius | N/A | w/ White Housing | |||
| 2004 | Toyota | Prius | N/A | w/ White Housing |
* 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.