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Standard Ignition SC503 Automatic Transmission Output Shaft Speed Sensor
| Brand | Standard Ignition SC503 |
|---|---|
| Connector Gender | Female |
| Connector Shape | Rectangular |
| Connector Type | Plug In |
| Terminal Gender | Male |
| Terminal Type | Blade |
| Fits | Toyota and Lexus · 44 vehicles |
Bolt-on design. Installs with a simple bolt mount and plug-in connector.
New sensor. Fresh replacement part from Standard Ignition.
Compact connector. Rectangular female plug with blade terminals for a secure connection.
Cross-references Standard Ignition SC503, 8941308010 and SC503T for the same application. See all 8.
Automatic Transmission Output Shaft Speed Sensor
Standard Ignition SC503 is a new automatic transmission output shaft speed sensor for select Toyota and Lexus applications. It uses a bolt-on mounting style with a single bolt hole, a rectangular female connector, and a 2-blade male terminal layout for direct replacement service.
Key Features
- Automatic transmission output shaft speed sensor for transmission speed signal monitoring
- Bolt-on, bolt mount design with one mounting point
- Rectangular female connector with plug-in connection
- New replacement part with green finish
- No wiring harness, dust shield, or mounting hardware included
- Cross-references Standard Ignition SC503T and related OE-style applications
Detailed Description
Standard Ignition SC503 is built for vehicles that use an output shaft speed sensor to report transmission shaft speed to the control system. In Toyota Highlander, RAV4, Solara, Avalon, and Lexus ES330 or RX330 applications, this sensor supports accurate transmission speed input for proper shifting and drivability. The SC503 part number is also referenced in OE-style interchange listings for select applications, making it a practical replacement choice when diagnosing transmission speed signal faults.
Fits 2009-2013 Toyota Highlander, No. 2. Fits 2006-2012 Toyota RAV4, Upper and No. 2. Fits 2004-2008 Toyota Solara. Fits 2005-2007 Toyota Avalon. Fits 2006-2007 Toyota Highlander. Fits 2004-2006 Lexus ES330, No. 2. Fits 2004-2006 Lexus RX330, No. 2. Fits 2005 Toyota Highlander.
What It Helps Fix
- Transmission speed sensor fault codes
- Harsh, delayed, or inconsistent shifting caused by incorrect shaft speed input
- Speed signal loss to the transmission control system
- Illuminated check engine or transmission warning lights related to sensor failure
- Drivability issues tied to inaccurate output shaft speed readings
Installation Notes
Verify connector style, mounting location, and application notes before installation. SC503 uses a bolt-on mounting method, a rectangular plug-in connector, and no harness, so the existing vehicle connector must match. Confirm the sensor position on the transmission case for the specific Toyota or Lexus application, including No. 2 and Upper locations where listed.
Quality Assurance
Standard Ignition supplies replacement electrical and engine management components for service applications. SC503 is a new part built to match the listed fitment and connector requirements for the specified Toyota and Lexus models.
| Year | Make | Model | Transmission | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 2013 | Toyota | Highlander | — | 3.5L | V6 | — | N/A | No. 2 |
| 2012 | Toyota | Highlander | — | 3.5L | V6 | — | N/A | No. 2 |
| 2012 | Toyota | RAV4 | — | 3.5L | V6 | — | N/A | Upper |
| 2012 | Toyota | RAV4 | — | 3.5L | V6 | — | N/A | No. 2 |
| 2011 | Toyota | Highlander | — | 3.5L | V6 | — | N/A | No. 2 |
| 2011 | Toyota | RAV4 | — | 3.5L | V6 | — | N/A | Upper |
| 2011 | Toyota | RAV4 | — | 3.5L | V6 | — | N/A | No. 2 |
| 2010 | Toyota | Highlander | — | 3.3L | V6 | — | N/A | No. 2 |
| 2010 | Toyota | Highlander | — | 3.5L | V6 | — | N/A | No. 2 |
| 2010 | Toyota | RAV4 | — | 3.5L | V6 | — | N/A | Upper |
| 2010 | Toyota | RAV4 | — | 3.5L | V6 | — | N/A | No. 2 |
| 2009 | Toyota | Highlander | — | 3.3L | V6 | — | N/A | No. 2 |
| 2009 | Toyota | Highlander | — | 3.5L | V6 | — | N/A | No. 2 |
| 2009 | Toyota | RAV4 | — | 3.5L | V6 | — | N/A | Upper |
| 2009 | Toyota | RAV4 | — | 3.5L | V6 | — | N/A | No. 2 |
| 2008 | Toyota | RAV4 | — | 3.5L | V6 | — | N/A | Upper |
| 2008 | Toyota | RAV4 | — | 3.5L | V6 | — | N/A | No. 2 |
| 2008 | Toyota | Solara | — | 3.3L | V6 | — | N/A | — |
| 2007 | Toyota | Avalon | — | — | — | — | N/A | — |
| 2007 | Toyota | Highlander | — | 3.3L | V6 | GAS | N/A | Toyota |
| 2007 | Toyota | RAV4 | — | 3.5L | V6 | — | N/A | Upper |
| 2007 | Toyota | RAV4 | — | 3.5L | V6 | — | N/A | No. 2 |
| 2007 | Toyota | Solara | Automatic | 3.3L | V6 | — | N/A | — |
| 2006 | Lexus | ES330 | — | — | — | — | N/A | No. 2 |
| 2006 | Lexus | ES330 | — | 3.3L | V6 | — | N/A | No. 2 |
| 2006 | Lexus | RX330 | — | — | — | — | N/A | No. 2 |
| 2006 | Lexus | RX330 | — | 3.3L | V6 | — | N/A | No. 2 |
| 2006 | Toyota | Avalon | — | — | — | — | N/A | — |
| 2006 | Toyota | Highlander | — | 3.3L | V6 | GAS | N/A | Toyota |
| 2006 | Toyota | RAV4 | — | 3.5L | V6 | — | N/A | Upper |
| 2006 | Toyota | RAV4 | — | 3.5L | V6 | — | N/A | No. 2 |
| 2006 | Toyota | Solara | Automatic | 3.3L | V6 | — | N/A | — |
| 2005 | Lexus | ES330 | — | — | — | — | N/A | No. 2 |
| 2005 | Lexus | ES330 | — | 3.3L | V6 | — | N/A | No. 2 |
| 2005 | Lexus | RX330 | — | — | — | — | N/A | No. 2 |
| 2005 | Lexus | RX330 | — | 3.3L | V6 | — | N/A | No. 2 |
| 2005 | Toyota | Avalon | — | — | — | — | N/A | — |
| 2005 | Toyota | Highlander | — | 3.3L | V6 | — | N/A | — |
| 2005 | Toyota | Solara | Automatic | 3.3L | V6 | — | N/A | — |
| 2004 | Lexus | ES330 | — | — | — | — | N/A | No. 2 |
| 2004 | Lexus | ES330 | — | 3.3L | V6 | — | N/A | No. 2 |
| 2004 | Lexus | RX330 | — | — | — | — | N/A | No. 2 |
| 2004 | Lexus | RX330 | — | 3.3L | V6 | — | N/A | No. 2 |
| 2004 | Toyota | Solara | Automatic | 3.3L | V6 | — | N/A | — |
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