HomeElectrical, Charging and Starting > SensorsStandard Ignition BSC33 Battery Current Sensor
Part #: BSC33

Standard Ignition BSC33 Battery Current Sensor

⚙️ 15 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: Toyota, Highlander
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Overview of Standard Ignition Battery Current Sensor BSC33

The Standard Ignition Battery Current Sensor BSC33 is designed for precise monitoring of battery current in select Lexus and Toyota vehicles. Engineered with a female rectangular plug-in connector and male bullet terminals, this sensor ensures reliable electrical connections for optimal charging system performance.

  • Connector Gender: Female
  • Connector Quantity: 3
  • Connector Shape: Rectangular
  • Connector Type: Plug in
  • Terminal Gender: Male
  • Terminal Quantity: 50
  • Terminal Type: Bullet

Detailed Product Description

The BSC33 battery current sensor from Standard Ignition is specifically compatible with Lexus Highlander, RX450h, and RX450hL models, as well as Toyota Highlander vehicles. It features a three-connector female plug-in interface with a rectangular shape, designed to fit securely and maintain consistent electrical contact. The sensor terminals are male bullet types, with a total of 50 terminals, providing a robust connection to the vehicle’s electrical system. This configuration supports accurate measurement of battery current, which is critical for the vehicle’s charging and starting systems.

Common Applications and Issues Addressed

  • Monitors battery current flow to prevent overcharging or undercharging
  • Helps diagnose charging system faults in Lexus Highlander and RX450h models
  • Supports hybrid system battery management in RX450h and RX450hL vehicles
  • Replaces faulty or damaged battery current sensors causing erratic charging behavior
  • Ensures proper communication between battery and vehicle control modules

Installation Notes and Tips

  • Ensure vehicle ignition is off before installation to avoid electrical hazards
  • Verify connector orientation matches the female rectangular plug-in design
  • Check for secure seating of male bullet terminals to prevent loose connections
  • Consult vehicle service manual for specific sensor location and removal procedures
  • Test sensor functionality after installation to confirm proper operation

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. The BSC33 battery current sensor undergoes rigorous quality control testing to maintain consistent standards. Warranty coverage details should be confirmed with the product documentation or supplier, typically offering protection against defects in materials and workmanship.

BrandStandard Ignition
Part NumberBSC33
Connector GenderFemale
Connector ShapeRectangular
Connector TypePlug In
Terminal GenderMale
Terminal TypeBullet

This part fits 15 vehicles. Search below:

YearMakeModelDrive TypeLitersCylindersFuel TypePositionNotes
2022LexusRX450hLFULL HYBRID EV-GAS (FHEV)N/A
2021LexusRX450hLFULL HYBRID EV-GAS (FHEV)N/A
2020LexusRX450hLFULL HYBRID EV-GAS (FHEV)N/A
2019LexusRX450hFULL HYBRID EV-GAS (FHEV)N/A
2019LexusRX450hLFULL HYBRID EV-GAS (FHEV)N/A
2019ToyotaHighlanderAWD3.5LV6FULL HYBRID EV-GAS (FHEV)N/A
2018LexusRX450hFULL HYBRID EV-GAS (FHEV)N/A
2018LexusRX450hLFULL HYBRID EV-GAS (FHEV)N/A
2018ToyotaHighlanderAWD3.5LV6FULL HYBRID EV-GAS (FHEV)N/A
2017LexusRX450hFULL HYBRID EV-GAS (FHEV)N/A
2017ToyotaHighlanderN/A
2016LexusRX450hFULL HYBRID EV-GAS (FHEV)N/A
2016ToyotaHighlanderN/A
2015ToyotaHighlanderN/A
2014ToyotaHighlanderN/A

* 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:

8989248040BCSB10019CTB35SBC34

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