Standard Ignition TCS158 Automatic Transmission Control Solenoid

Automatic Transmission Control Solenoid for Toyota and Scion

Standard Ignition TCS158 is an automatic transmission control solenoid built with a metal body, grounded base, and bolt-on mounting for direct service replacement. It uses a single rectangular female connector with a male blade terminal and includes a mounting bracket for installation on the transmission case.

Compatible With 2000-2004 Toyota Echo, Solenoid No. 3; 2000-2005 Toyota Celica, Solenoid No. 3; 2003-2005 Toyota Matrix, Solenoid No. 3; 2004-2005 Scion xA, Solenoid No. 3; and 2004-2005 Scion xB, Solenoid No. 3. Standard Ignition TCS158 is also referenced under TCS50 and TCS81 for related applications.

Key Features

• Automatic transmission control solenoid for transmission shift control service
• Metal construction with grounded base
• Bolt-on attachment method with one mounting hole
• Rectangular female connector with male blade terminal
• Mounting bracket included
• Direct electrical connection with no wiring harness
• Gasket not included

Detailed Description

Standard Ignition TCS158 is a transmission control solenoid used in select Toyota and Scion applications where Solenoid No. 3 service is required. The unit is built with a single connector, blade terminal, and bolt-on mounting layout to match the original transmission-side configuration. Its grounded metal base and bracketed design support secure installation in the transmission assembly.

This part number, TCS158, is listed for 2000-2005 Toyota Celica, 2003-2005 Toyota Matrix, 2000-2004 Toyota Echo, 2004-2005 Scion xA, and 2004-2005 Scion xB. If you are replacing a failed Toyota transmission control solenoid, TCS158 provides the correct electrical and mounting style for these applications.

Common Issues This Part May Address

• Harsh or delayed shifting caused by a faulty transmission control solenoid
• Transmission warning lights related to solenoid circuit faults
• Shift quality problems tied to Solenoid No. 3 failure
• Electrical connection issues at the transmission solenoid
• Transmission operation concerns from a worn or damaged original solenoid

Installation Notes and Tips

Verify the vehicle application and transmission solenoid location before installation. This part uses a single rectangular connector, a male blade terminal, and bolt-on mounting, so the existing connector and mounting point should be inspected for damage, corrosion, or bent terminals. Because no gasket or wiring harness is included, reuse or replace related sealing components as needed during service.

For fitment confirmation, match the vehicle year, make, model, and Solenoid No. 3 designation before ordering Standard Ignition TCS158.

Quality Assurance

Standard Ignition supplies OE-style electrical and transmission service parts for repair applications. TCS158 is built to match the listed connector, terminal, and mounting configuration for the specified Toyota and Scion vehicles.