OE Quality
60-Day Returns

Standard Ignition ALS1778 ABS Wheel Speed Sensor - Rear Left
Reliable ABS Wheel Speed Sensor for Toyota Highlander
The Standard Ignition ALS1778 ABS Wheel Speed Sensor is designed specifically for Toyota Highlander models, providing accurate wheel speed data essential for your vehicle's anti-lock braking system. This sensor ensures consistent performance and helps maintain vehicle safety under various driving conditions.
- Compatible with Toyota Highlander vehicles
- Mounting bracket and wiring harness included for straightforward installation
- Bolt mount attachment with three bolt holes for secure fitment
- Two-wire design with blade terminal type and rectangular male connector
- 30-inch (760 mm) harness length for flexible routing
- Black finish for corrosion resistance and durability
Product Features and Specifications
The ALS1778 ABS Wheel Speed Sensor from Standard Ignition features a bolt mount attachment method with three bolt holes, ensuring a secure and stable installation on the spindle mounting location. It includes a mounting bracket and a wiring harness with a 30-inch length, allowing for proper connection and routing within the vehicle. The sensor has a two-wire configuration with female blade terminals and a single rectangular male connector, designed to interface seamlessly with the vehicle's ABS system. The black finish provides protection against environmental factors, contributing to the sensor's longevity.
Purpose and Common Applications
This ABS wheel speed sensor is essential for monitoring wheel rotation speed and transmitting this data to the vehicle's ABS control module. It helps prevent wheel lockup during braking and supports traction control functions. The ALS1778 sensor is commonly used to address the following issues:
- ABS warning light illuminated due to faulty sensor
- Intermittent or inaccurate wheel speed readings
- Traction control or stability control system malfunctions
- Uneven or compromised braking performance
- Diagnostic trouble codes related to wheel speed sensor faults
Installation Notes and Tips
Installation of the Standard Ignition ALS1778 sensor requires removal of the old sensor from the spindle mounting location. The included mounting bracket and wiring harness simplify the replacement process. Ensure the bolt mount attachment is secured using the three bolt holes provided. Verify the connector is properly engaged with the vehicle’s ABS wiring harness to avoid signal interruptions. It is recommended to inspect the mounting area for debris or corrosion before installation to ensure optimal sensor performance.
Quality Assurance and Warranty
Standard Ignition parts are manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. The ALS1778 ABS Wheel Speed Sensor undergoes rigorous quality control testing to maintain consistent standards. While specific warranty details may vary, Standard Ignition typically offers a limited warranty covering defects in materials and workmanship. Refer to the product documentation for exact warranty terms.
| Brand | Standard Ignition |
| Part Number | ALS1778 |
| Connector Gender | Male |
| Connector Shape | Rectangular |
| Harness Length - inches | 30 |
| Harness Length - mm | 760 |
| Mounting Location | Spindle |
| Number of Bolt Holes | 3 |
| Terminal Gender | Female |
| Terminal Type | Blade |
This part fits 6 vehicles. Search below:
| Year | Make | Model | Drive Type | Position | Notes |
|---|---|---|---|---|---|
| 2013 | Toyota | Highlander | AWD | Rear Left | |
| 2012 | Toyota | Highlander | AWD | Rear Left | |
| 2011 | Toyota | Highlander | AWD | Rear Left | |
| 2010 | Toyota | Highlander | AWD | Rear Left | |
| 2009 | Toyota | Highlander | AWD | Rear Left | |
| 2008 | Toyota | Highlander | AWD | Rear 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.