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Standard Ignition TS-345 Engine Cooling Fan Switch
| Brand | Standard Ignition TS-345 |
|---|---|
| Color | Cream |
| Connector Gender | Female |
| Finish | Brass, Plastic |
| Terminal Type | Blade |
| Fits | Toyota · 11 vehicles |
Plug-in connection. Female oval connector with blade terminals for straightforward installation.
Metal housing. Brass and plastic finish adds durable construction.
Toggle actuation. Engine cooling fan switch with open-at-idle operation.
Cross-references Airtex Fuel Pumps FS178, Beck/Arnley 201-1714 and Four Seasons 20034 for the same application. See all 14.
Engine Cooling Fan Switch for Toyota Applications
Standard Ignition TS-345 is an engine cooling fan switch with a 12-volt electrical rating, 2-terminal blade connection, and plug-in attachment. It uses a 16mm x 1.50 thread size, oval connector shape, and female connector design for direct replacement service on select Toyota cooling systems.
Key Features
- Engine cooling fan switch for temperature-based fan control
- 12V electrical specification
- Plug-in attachment method with oval 2-connector layout
- 2 blade terminals, female connector, male terminal design
- 16mm x 1.50 thread size
- Metal housing with brass and plastic finish
- Open at idle: Yes
Detailed Description
Standard Ignition TS-345 is built for cooling system service where the fan switch threads into the water inlet or thermostat housing and signals the fan circuit based on coolant temperature. The oval switch body, plug-in connector style, and 2-terminal configuration support direct replacement on select Toyota Sienna, Avalon, and Camry applications. This part cross-references Four Seasons 20034 for the same application.
Compatible With 2005 Toyota Sienna, engine mounted; 1998-2000 Toyota Sienna, w/o towing package, 2 term., on water inlet; 1995-1999 Toyota Avalon, 2 term., on thermostat housing; and 1995-1996 Toyota Camry, 2 term., water inlet. Standard Ignition TS-345 is a practical match for drivers searching for a Toyota Sienna cooling fan switch, Toyota Avalon fan switch, or Toyota Camry engine cooling fan switch replacement.
Common Issues It Can Help Address
- Cooling fan not switching on at the proper temperature
- Cooling fan running inconsistently due to a worn thermal switch
- Temperature-related fan control faults at the water inlet or thermostat housing
- Overheating concerns tied to a failed fan switch circuit
- Intermittent electrical contact at the original switch connector
Installation Notes and Tips
Verify the thread size, connector shape, and terminal count before installation. This switch uses a plug-in connection and does not include a wiring harness, bulb, or mounting bracket. Confirm the mounting location on the water inlet or thermostat housing and inspect the connector for corrosion or heat damage before reassembly.
Quality Assurance
Standard Ignition TS-345 is a replacement cooling fan switch from a recognized aftermarket electrical parts brand. Its OE-style connector layout and application-specific fitment support accurate service on listed Toyota vehicles.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2005 | Toyota | Sienna | — | — | N/A | Engine Mounted |
| 2000 | Toyota | Sienna | — | — | N/A | w/o Towing Package; 2 Term.; On Water Inlet |
| 1999 | Toyota | Avalon | — | — | N/A | 2 Term.; On Thermostat Housing |
| 1999 | Toyota | Sienna | — | — | N/A | w/o Towing Package; 2 Term.; On Water Inlet |
| 1998 | Toyota | Avalon | — | — | N/A | 2 Term.; On Thermostat Housing |
| 1998 | Toyota | Sienna | — | — | N/A | w/o Towing Package; 2 Term.; On Water Inlet |
| 1997 | Toyota | Avalon | — | — | N/A | 2 Term.; On Thermostat Housing |
| 1996 | Toyota | Avalon | — | — | N/A | 2 Term.; On Thermostat Housing |
| 1996 | Toyota | Camry | 3.0L | V6 | N/A | 2 Term.; Water Inlet |
| 1995 | Toyota | Avalon | — | — | N/A | 2 Term.; On Thermostat Housing |
| 1995 | Toyota | Camry | 3.0L | V6 | N/A | 2 Term.; Water Inlet |
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