Standard Ignition ALS640 Tire Pressure Monitoring System Sensor - Rear Left

Standard Ignition ALS640 TPMS Sensor for Toyota Sienna

The Standard Ignition ALS640 is a wheel-mounted tire pressure monitoring system sensor for select Toyota Sienna rear left applications. It is built with a bolt-mount design, a rectangular 1-connector layout, and a 24-inch harness for the specified OE-style installation points.

Fits 2004-2010 Toyota Sienna, rear left. For 2004-2006 Toyota Sienna rear left applications, install the sensor and follow the OEM factory relearn procedure; no programming is required.

Key Features

• Part number ALS640 for direct reference and service matching
• Wheel-mounted TPMS sensor for rear left placement
• Bolt-mount design with 2 bolt holes
• Rectangular connector with 1 male connector and female blade terminals
• 24-inch (600 mm) harness length for the listed application
• Cross-references Standard Ignition ALS640 and Monroe Shocks & Struts 172286 for the same application

Detailed Description

The ALS640 is a tire pressure monitoring system sensor used in the wheel position on select Toyota Sienna models. This Standard Ignition TPMS sensor is specified for rear left fitment on 2004-2010 Toyota Sienna vehicles, with notes for 2004-2006 models indicating OEM factory relearn only and no programming requirement. The bolt-mount construction, rectangular connector, and blade terminal layout support the listed OE-style configuration.

When servicing a Toyota Sienna TPMS concern, the ALS640 provides a direct replacement option for the rear left wheel position. The part number ALS640 is also useful when matching service records, sensor references, or interchange data during TPMS repair work.

What It Is Used For

• Replacing a failed rear left TPMS sensor on a Toyota Sienna
• Restoring tire pressure monitoring system warning light operation
• Addressing inaccurate or missing tire pressure readings
• Correcting sensor communication issues at the wheel position
• Servicing TPMS faults during wheel, tire, or brake work on the listed Sienna models

Installation Notes and Tips

Compatible with 2004-2010 Toyota Sienna rear left applications. Confirm wheel position before installation, and verify connector style, terminal type, and harness routing against the original sensor. For 2004-2006 Toyota Sienna rear left fitment, install the sensor and complete the OEM factory relearn procedure; no programming is required. Always follow the vehicle service information for TPMS relearn and initialization steps.

Quality Assurance

Standard Ignition supplies this TPMS sensor under part number ALS640 for the listed Toyota Sienna applications. Fitment and connector specifications are provided to support accurate replacement selection.