Standard Ignition TCS146 Automatic Transmission Control Solenoid

Automatic Transmission Control Solenoid for Toyota and Scion

Standard Ignition TCS146 is an automatic transmission control solenoid built for specific Toyota and Scion applications that use a 3-way solenoid control circuit. It mounts inside the transmission and uses a rectangular female connector with a blade terminal interface for direct electrical connection.

For Toyota Highlander, Toyota RAV4, Toyota Camry, Toyota Solara, Toyota Celica, Scion tC, and related applications, Standard Ignition TCS146 provides the correct OE-style fitment for transmission control service.

Key Features

• Brand: Standard Ignition
• Part number: TCS146
• Automatic transmission control solenoid
• Mounts inside the transmission
• Rectangular 1-connector design
• Female connector with male blade terminal
• Mounting bracket included
• Plastic and metal construction
• No wiring harness, gasket, or hardware included

Detailed Description

Standard Ignition TCS146 is a transmission-mounted control solenoid used in select Toyota and Scion vehicles with 3-way solenoid control systems. It is specified for applications such as Toyota Highlander, Toyota RAV4, Toyota Camry, Toyota Solara, Toyota Celica, and Scion tC, including models identified as Solenoid No. 2 or Solenoid No. 1 in the fitment notes. This part cross-references 3523021010 and TCS47 for the same application.

The TCS146 is built with a single rectangular connector, one blade terminal, and a push-on attachment method. Its internal mounting location and included bracket support a direct replacement approach for transmission service where the original solenoid has failed or is no longer operating correctly.

Vehicle Fitment

• Fits 2004-2007 Toyota Highlander, N/A; Solenoid No. 2; 3 Way Solenoid
• Fits 2001-2002 Toyota Highlander, N/A; Solenoid No. 2; 3 Way Solenoid
• Fits 2006 Scion tC, N/A; 5/06 and prior models use Solenoid No. 2, a 3 Way Solenoid.
• Fits 2002-2006 Toyota Solara, N/A; 3 Way Solenoid Control Solenoid No. 2
• Fits 2005 Scion tC, N/A; 3 Way Solenoid Control Solenoid No. 2
• Fits 2005 Toyota Celica, N/A; 3 Way Solenoid Control Solenoid No. 2
• Fits 2002-2003 Toyota Celica, N/A; 3 Way Solenoid Control Solenoid No. 2
• Fits 2001-2005 Toyota RAV4, N/A; 3 Way Solenoid Control Solenoid No. 2
• Fits 2003 Toyota Highlander, N/A; Solenoid No. 1; 3 Way Solenoid
• Fits 2002 Toyota Camry, N/A; 3 Way Solenoid Control Solenoid No. 2

Common Issues This Part May Resolve

• Transmission shift timing concerns related to solenoid control
• Fault codes tied to a failed 3-way transmission solenoid
• Harsh, delayed, or inconsistent gear changes caused by solenoid malfunction
• Loss of proper hydraulic control inside the transmission
• Drivability complaints traced to the Toyota Highlander, Toyota RAV4, or Scion tC transmission control circuit

Installation Notes and Tips

Install TCS146 inside the transmission at the original solenoid location and verify the connector style, terminal type, and fitment notes before service. Because this part does not include a wiring harness, gasket, or hardware, reuse or replace related transmission components as needed during repair. Confirm whether the vehicle uses Solenoid No. 1 or Solenoid No. 2, especially on Toyota Highlander and Scion tC applications with model-date-specific notes.

Quality Assurance

Standard Ignition supplies replacement electrical and transmission components for OE-style service applications. TCS146 is built to match the listed connector, mounting, and application requirements for the specified Toyota and Scion vehicles.