Standard Ignition ALS671 Tire Pressure Monitoring System Sensor - Rear Left

Standard Ignition ALS671 TPMS Sensor Overview

Standard Ignition ALS671 is a tire pressure monitoring system sensor assembly for select Lexus RX applications. It is built for rear left wheel mounting and uses a rectangular 1-connector, 2-terminal design with a 31-inch harness for the listed vehicle fitments.

For Lexus RX350 and Lexus RX330 owners needing a rear left ABS wheel speed sensor application, ALS671 provides a direct-fit service part reference for the specified U.S.-built vehicles and model years.

Key Features

• Part number: ALS671
• Category: Tire Pressure Monitoring System (TPMS) Sensor
• Mounting location: Wheel
• Position: Rear left
• Rectangular connector with 1 connector, male connector gender, and female terminal gender
• 2 blade terminals and 2 bolt holes
• 31-inch harness length
• No hardware included
• Cross-reference part numbers include 531328 and 895460E010

Detailed Description

Standard Ignition ALS671 is a wheel-mounted sensor assembly listed for rear left applications on 2004-2006 Lexus RX330, 2007 Lexus RX350, and 2008-2009 Lexus RX350. Fitment notes specify U.S.-built vehicles for the RX330 and RX350 applications, with one RX330 listing noting no programming required and use of the OEM factory relearn procedure after installation. This part number, ALS671, is also referenced under interchange numbers used for the same application.

Use this part when servicing a Lexus RX350 rear left ABS wheel speed sensor application or a Lexus RX330 rear left ABS wheel speed sensor application within the listed years and build notes. The connector style, terminal layout, and harness length are provided to match the original sensor connection points on the vehicle.

What It Helps Resolve

• ABS wheel speed sensor fault codes related to the rear left wheel
• Intermittent or inaccurate wheel speed signal readings
• ABS warning light concerns tied to the listed Lexus RX fitments
• Traction control or stability system issues caused by a failed wheel sensor signal
• Service replacement needs for a damaged or worn rear left sensor assembly

Installation Notes and Tips

Verify the vehicle is one of the listed fitments before ordering: 2004-2006 Lexus RX330 rear left, 2007 Lexus RX350 rear left, or 2008-2009 Lexus RX350 rear left. Confirm the connector shape, terminal count, and harness routing against the original part before installation. For the 2004-2005 Lexus RX330 listing, follow the OEM factory relearn procedure after installing the sensor.

Because hardware is not included, reuse or source the required mounting components as needed for the vehicle. Always inspect the wheel area, connector, and harness path for damage before completing the repair.

Quality Assurance

Standard Ignition replacement parts are cataloged for direct application matching and interchange reference support. ALS671 is listed against OE and aftermarket cross-reference numbers for the same rear left Lexus RX applications, helping confirm part identification during service work.