HomeTire and Wheel > SensorsStandard Ignition ALS777 Tire Pressure Monitoring System (TPMS) Sensor - Front Left
Part #: ALS777

Standard Ignition ALS777 Tire Pressure Monitoring System (TPMS) Sensor - Front Left

Front Left
⚙️ 28 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Lexus and Toyota, Highlander, RX330, RX350, and RX400h
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Reliable TPMS Sensor for Lexus and Toyota Vehicles

The Standard Ignition ALS777 Tire Pressure Monitoring System (TPMS) Sensor is designed to provide accurate tire pressure readings for select Lexus and Toyota models. Engineered for bolt mount installation on the wheel, this sensor helps maintain optimal tire performance and safety.

  • Compatible with Lexus Highlander, RX330, RX350, and RX400h models
  • Part number ALS777 for precise replacement
  • Bolt mount type with 2 bolt holes for secure installation
  • Rectangular female connector with 1 connector quantity
  • Blade terminal type with 2 terminals (male and female)
  • Mounts directly on the wheel for accurate pressure monitoring

Detailed Product Features and Specifications

The Standard Ignition ALS777 TPMS sensor features a bolt mount design with two bolt holes, ensuring a secure and stable fit on the wheel. It includes a rectangular female connector with one connector quantity, designed to interface with the vehicle’s wiring harness. The sensor terminals are blade type, with two terminals—one male and one female—providing reliable electrical connections. This sensor does not include mounting hardware or a dust shield, so ensure compatibility with your vehicle’s existing components. Specifically engineered for Lexus Highlander and Toyota RX series models, this sensor supports accurate tire pressure monitoring to help maintain vehicle safety and performance.

Applications and Problem Solving

  • Replaces faulty or damaged TPMS sensors on Lexus Highlander and Toyota RX330, RX350, RX400h
  • Restores accurate tire pressure readings to prevent uneven tire wear
  • Helps avoid tire-related safety issues caused by underinflation or overinflation
  • Supports compliance with vehicle safety standards requiring functional TPMS
  • Improves fuel efficiency by maintaining proper tire pressure

Installation Notes and Tips

Installation requires mounting the sensor directly on the wheel using the bolt mount with two bolt holes. Since mounting hardware is not included, use existing or compatible bolts for secure attachment. Ensure the rectangular female connector aligns properly with the vehicle’s wiring harness for a reliable electrical connection. Handle the blade terminals carefully to avoid damage during installation. It is recommended to have the TPMS sensor programmed or relearned to the vehicle’s system after installation to ensure proper functionality.

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications for fit, form, and function. While specific warranty details for the ALS777 TPMS sensor are not provided here, Standard Ignition typically offers coverage against defects in material and workmanship. For exact warranty terms, consult the product documentation or the vehicle service provider.

BrandStandard Ignition
Part NumberALS777
Mounting Hardware IncludedNo
Terminal Quantity2
Connector GenderFemale
Terminal GenderMale
Connector Quantity1
Connector ShapeRectangular
Dust Shield IncludedNo
Mounting LocationWheel
Mounting TypeBolt mount
Number of Bolt Holes2
Terminal TypeBlade

This part fits 28 vehicles. Search below:

YearMakeModelDrive TypePositionNotes
2009LexusRX350AWDFront LeftMade in Japan
2008LexusRX350AWDFront LeftMade in Japan
2008LexusRX400hAWDFront Left
2008LexusRX400hFWDFront Left
2007LexusRX350Front LeftMade in Japan
2007LexusRX400hAWDFront Left
2007LexusRX400hFWDFront Left
2007ToyotaHighlanderAWDFront Left
2007ToyotaHighlanderFWDFront Left
2006LexusRX330AWDFront LeftMade in Japan
2006LexusRX330FWDFront LeftMade in Japan
2006LexusRX400hAWDFront Left
2006LexusRX400hFWDFront Left
2006ToyotaHighlanderFront LeftInstall sensor and follow OEM factory relearn procedure, no programming required.
2006ToyotaHighlanderAWDFront Left
2006ToyotaHighlanderFWDFront Left
2005LexusRX330Front LeftBuilt In Japan; No programming required. Install sensor and follow the OEM factory relearn procedure.
2005LexusRX330AWDFront LeftMade in Japan
2005LexusRX330FWDFront LeftMade in Japan
2005ToyotaHighlanderFront LeftInstall sensor and follow OEM factory relearn procedure, no programming required.
2005ToyotaHighlanderAWDFront Left
2005ToyotaHighlanderFWDFront Left
2004LexusRX330Front LeftBuilt In Japan; No programming required. Install sensor and follow the OEM factory relearn procedure.
2004LexusRX330AWDFront LeftMade in Japan
2004LexusRX330FWDFront LeftMade in Japan
2004ToyotaHighlanderFront LeftInstall sensor and follow OEM factory relearn procedure, no programming required.
2004ToyotaHighlanderAWDFront Left
2004ToyotaHighlanderFWDFront Left

* 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:

5314108954348030ABS887ALS777SU8367

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