/live/media/SI/SI_NS504_Fro.jpg)
OE Quality
60-Day Returns
Standard Ignition NS-504 Neutral Safety Switch
| Brand | Standard Ignition 235-1206 |
|---|---|
| Connector Gender | Male |
| Connector Shape | Rectangular |
| Mounting Bracket Included | Yes |
| Terminal Quantity | 3 |
| Fits | —135 vehicles |
Bolt-mount design. Installs securely with a single rectangular connector.
Durable materials. Plastic and metal construction for dependable operation.
12V electrical part. Built for standard automotive electrical systems.
Cross-references Standard Ignition NS-504, 8454004010 and NS6722 for the same application. See all 5.
$188.92Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Neutral Safety Switch options
Neutral Safety Switch for Lexus and Toyota
Standard Ignition NS-504 is a 12V neutral safety switch built with a bolt-mount design, a rectangular female connector, and 9 male blade terminals. It is a direct-fit electrical replacement for a wide range of Lexus and Toyota applications, including Lexus GS350, IS350, GX460, LS460, and Toyota 4Runner, Tacoma, FJ Cruiser, Tundra, and Land Cruiser models.
- 12V neutral safety switch for automatic transmission starting circuit control
- Bolt-mount attachment with 1 rectangular connector
- 9-terminal blade design with male terminals and female connector
- Black face color with aluminum, plastic, and metal construction
- Length: 4 in. (101.6 mm)
- Standard Ignition NS-504 replacement part number
Detailed Product Overview
The Standard Ignition NS-504 is designed for vehicles that use a neutral safety switch to help control starter engagement only when the transmission is in Park or Neutral. Its bolt-mount layout, 9-terminal configuration, and 12V electrical specification make it a practical replacement for service work on Lexus GS350, IS250, IS350, GX460, and Toyota Tacoma or 4Runner applications. This part cross-references S41279 for the same application.
What This Part Helps Address
- Engine will not crank in Park or Neutral
- Starter engages inconsistently
- Transmission range signal issues related to the starting circuit
- Intermittent no-start condition tied to the neutral safety switch
- Electrical connection problems at the switch connector
Installation Notes and Tips
Verify connector shape, terminal count, and mounting style before installation. This NS-504 uses a bolt-mount design and does not include mounting hardware or gaskets. For fitment-sensitive Lexus GX460, Lexus LX570, Toyota 4Runner, and Toyota Land Cruiser applications, confirm vehicle configuration before purchase. Always compare the original switch to the replacement part and inspect the harness connector for wear or corrosion.
Quality Assurance
Standard Ignition manufactures replacement electrical components for service and repair applications. NS-504 is built to match the listed OE-style fitment requirements for the vehicles shown above, including Lexus GS350 and Toyota Tacoma applications.
This part fits 135 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
| Year | Make | Model | Submodel | Drive Type | Transmission | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|---|---|
| 2019 | Lexus | GS350 | — | — | — | — | — | N/A | — |
| 2019 | Lexus | IS350 | — | — | — | — | — | N/A | — |
| 2018 | Lexus | GS350 | — | — | — | — | — | N/A | — |
| 2018 | Lexus | IS350 | — | — | — | — | — | N/A | — |
| 2017 | Lexus | GS350 | — | — | — | — | — | N/A | — |
| 2017 | Lexus | GX460 | — | — | — | — | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 2017 | Lexus | IS350 | — | — | — | — | — | N/A | — |
| 2017 | Lexus | LS460 | — | — | — | — | — | N/A | — |
| 2017 | Toyota | 4Runner | — | — | — | — | — | N/A | — |
| 2016 | Lexus | GS350 | — | — | — | — | — | N/A | — |
| 2016 | Lexus | GX460 | — | — | — | — | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 2016 | Lexus | IS350 | — | — | — | — | — | N/A | — |
| 2016 | Lexus | LS460 | — | — | — | — | — | N/A | — |
| 2016 | Lexus | LX570 | — | — | — | — | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 2016 | Toyota | 4Runner | — | — | — | — | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 2016 | Toyota | Land Cruiser | — | — | — | — | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 2015 | Lexus | GS350 | — | — | — | — | — | N/A | — |
| 2015 | Lexus | GX460 | — | — | — | — | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 2015 | Lexus | IS250 | — | — | — | — | — | N/A | — |
| 2015 | Lexus | IS350 | — | — | — | — | — | N/A | — |
| 2015 | Lexus | LS460 | — | — | — | — | — | N/A | — |
| 2015 | Lexus | LX570 | — | — | — | — | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 2015 | Toyota | 4Runner | — | — | — | — | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 2015 | Toyota | Land Cruiser | — | — | — | — | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 2015 | Toyota | Tacoma | — | — | Automatic | 4.0L | V6 | N/A | — |
| 2014 | Lexus | GS350 | — | — | — | — | — | N/A | — |
| 2014 | Lexus | GX460 | — | — | — | — | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 2014 | Lexus | IS F | — | — | — | — | — | N/A | — |
| 2014 | Lexus | IS250 | — | — | — | — | — | N/A | — |
| 2014 | Lexus | IS350 | — | — | — | — | — | N/A | — |
| 2014 | Lexus | LS460 | — | — | — | — | — | N/A | — |
| 2014 | Lexus | LX570 | — | — | — | — | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 2014 | Toyota | 4Runner | — | — | — | — | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 2014 | Toyota | FJ Cruiser | — | — | — | — | — | N/A | — |
| 2014 | Toyota | Land Cruiser | — | — | — | — | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 2014 | Toyota | Tacoma | — | — | — | 4.0L | V6 | N/A | — |
| 2013 | Lexus | GS350 | — | — | — | — | — | N/A | — |
| 2013 | Lexus | GX460 | — | — | — | — | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 2013 | Lexus | IS F | — | — | — | — | — | N/A | — |
| 2013 | Lexus | IS250 | — | — | — | — | — | N/A | — |
| 2013 | Lexus | IS350 | — | — | — | — | — | N/A | — |
| 2013 | Lexus | LS460 | — | — | — | — | — | N/A | — |
| 2013 | Lexus | LX570 | — | — | — | — | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 2013 | Toyota | 4Runner | — | — | — | — | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 2013 | Toyota | FJ Cruiser | — | — | — | — | — | N/A | — |
| 2013 | Toyota | Land Cruiser | — | — | — | — | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 2013 | Toyota | Tacoma | — | — | — | 4.0L | V6 | N/A | — |
| 2012 | Lexus | GX460 | — | — | — | — | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 2012 | Lexus | IS F | — | — | — | — | — | N/A | — |
| 2012 | Lexus | IS250 | — | — | — | — | — | N/A | — |
| 2012 | Lexus | IS350 | — | — | — | — | — | N/A | — |
| 2012 | Lexus | LS460 | — | — | — | — | — | N/A | — |
| 2012 | Toyota | 4Runner | — | — | — | — | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 2012 | Toyota | FJ Cruiser | — | — | — | — | — | N/A | — |
| 2012 | Toyota | Tacoma | — | — | — | 4.0L | V6 | N/A | — |
| 2011 | Lexus | GS350 | — | — | — | 3.5L | V6 | N/A | — |
| 2011 | Lexus | GS460 | — | — | — | 4.6L | V8 | N/A | — |
| 2011 | Lexus | GX460 | — | — | — | — | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 2011 | Lexus | IS F | — | — | — | 5.0L | V8 | N/A | — |
| 2011 | Lexus | IS250 | — | — | — | — | — | N/A | — |
| 2011 | Lexus | IS350 | — | — | — | — | — | N/A | — |
| 2011 | Lexus | LS460 | — | — | — | — | — | N/A | — |
| 2011 | Lexus | LX570 | — | — | — | — | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 2011 | Toyota | 4Runner | — | — | — | — | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 2011 | Toyota | FJ Cruiser | — | — | — | — | — | N/A | — |
| 2011 | Toyota | Land Cruiser | — | — | — | — | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 2011 | Toyota | Tacoma | Base | — | — | 4.0L | V6 | N/A | — |
| 2011 | Toyota | Tacoma | X-Runner | — | — | — | — | N/A | — |
| 2011 | Toyota | Tacoma | Pre Runner | — | — | 4.0L | V6 | N/A | — |
| 2010 | Lexus | GS350 | — | — | — | 3.5L | V6 | N/A | — |
| 2010 | Lexus | GS460 | — | — | — | 4.6L | V8 | N/A | — |
| 2010 | Lexus | GX460 | — | — | — | — | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 2010 | Lexus | IS F | — | — | — | 5.0L | V8 | N/A | — |
| 2010 | Lexus | IS250 | — | — | — | — | — | N/A | — |
| 2010 | Lexus | IS350 | — | — | — | — | — | N/A | — |
| 2010 | Lexus | LS460 | — | — | — | — | — | N/A | — |
| 2010 | Lexus | LX570 | — | — | — | — | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 2010 | Toyota | 4Runner | — | — | — | 4.0L | V6 | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 2010 | Toyota | FJ Cruiser | — | — | Automatic | — | — | N/A | — |
| 2010 | Toyota | Land Cruiser | — | — | — | — | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 2010 | Toyota | Tacoma | — | — | Automatic | 4.0L | V6 | N/A | — |
| 2009 | Lexus | GS350 | — | — | — | 3.5L | V6 | N/A | — |
| 2009 | Lexus | GS460 | — | — | — | 4.6L | V8 | N/A | — |
| 2009 | Lexus | GX470 | — | — | — | 4.7L | V8 | N/A | — |
| 2009 | Lexus | IS F | — | — | — | 5.0L | V8 | N/A | — |
| 2009 | Lexus | IS250 | — | — | — | — | — | N/A | — |
| 2009 | Lexus | IS350 | — | — | — | — | — | N/A | — |
| 2009 | Lexus | LS460 | — | — | — | — | — | N/A | — |
| 2009 | Lexus | LX570 | — | — | — | — | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 2009 | Toyota | 4Runner | — | — | — | 4.7L | V8 | N/A | — |
| 2009 | Toyota | 4Runner | — | — | — | 4.0L | V6 | N/A | — |
| 2009 | Toyota | FJ Cruiser | — | — | Automatic | — | — | N/A | — |
| 2009 | Toyota | Land Cruiser | — | — | — | — | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 2009 | Toyota | Tacoma | Pre Runner | — | Automatic | 4.0L | V6 | N/A | — |
| 2008 | Lexus | GS350 | — | — | — | 3.5L | V6 | N/A | — |
| 2008 | Lexus | GS460 | — | — | — | 4.6L | V8 | N/A | — |
| 2008 | Lexus | GX470 | — | — | — | 4.7L | V8 | N/A | — |
| 2008 | Lexus | IS F | — | — | — | 5.0L | V8 | N/A | — |
| 2008 | Lexus | IS250 | — | — | — | — | — | N/A | — |
| 2008 | Lexus | IS350 | — | — | — | — | — | N/A | — |
| 2008 | Lexus | LS460 | — | — | — | — | — | N/A | — |
| 2008 | Lexus | LX570 | — | — | — | — | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 2008 | Toyota | 4Runner | — | — | — | 4.7L | V8 | N/A | — |
| 2008 | Toyota | 4Runner | — | — | — | 4.0L | V6 | N/A | — |
| 2008 | Toyota | FJ Cruiser | — | — | Automatic | — | — | N/A | — |
| 2008 | Toyota | Land Cruiser | — | — | — | — | — | N/A | Prior to purchase, ensure compatibility with vehicle's alternator for proper fit. |
| 2008 | Toyota | Tacoma | Pre Runner | — | Automatic | 4.0L | V6 | N/A | — |
| 2008 | Toyota | Tacoma | Base | — | Automatic | 4.0L | V6 | N/A | — |
| 2007 | Lexus | GS350 | — | AWD | — | 3.5L | V6 | N/A | — |
| 2007 | Lexus | IS250 | — | — | — | — | — | N/A | — |
| 2007 | Lexus | IS350 | — | — | — | — | — | N/A | — |
| 2007 | Lexus | LS460 | — | — | — | — | — | N/A | — |
| 2007 | Lexus | LX470 | — | — | — | 4.7L | V8 | N/A | — |
| 2007 | Toyota | 4Runner | — | — | — | 4.7L | V8 | N/A | — |
| 2007 | Toyota | 4Runner | — | — | — | 4.0L | V6 | N/A | — |
| 2007 | Toyota | FJ Cruiser | — | — | Automatic | — | — | N/A | — |
| 2007 | Toyota | Land Cruiser | — | — | — | — | — | N/A | — |
| 2007 | Toyota | Sequoia | — | — | — | 4.7L | V8 | N/A | — |
| 2007 | Toyota | Tacoma | Base | — | Automatic | 4.0L | V6 | N/A | — |
| 2007 | Toyota | Tacoma | Pre Runner | — | Automatic | 4.0L | V6 | N/A | — |
| 2006 | Lexus | GS300 | — | AWD | — | 3.0L | V6 | N/A | — |
| 2006 | Lexus | IS250 | — | — | — | — | — | N/A | — |
| 2006 | Lexus | IS350 | — | — | — | — | — | N/A | — |
| 2006 | Lexus | LX470 | — | — | — | 4.7L | V8 | N/A | — |
| 2006 | Toyota | 4Runner | — | — | — | 4.7L | V8 | N/A | — |
| 2006 | Toyota | 4Runner | — | — | — | 4.0L | V6 | N/A | — |
| 2006 | Toyota | Land Cruiser | — | — | — | — | — | N/A | — |
| 2006 | Toyota | Sequoia | — | — | Automatic | — | — | N/A | — |
| 2006 | Toyota | Tacoma | — | — | Automatic | — | — | N/A | — |
| 2006 | Toyota | Tundra | — | — | Automatic | — | — | N/A | — |
| 2005 | Toyota | 4Runner | — | — | — | 4.0L | V6 | N/A | — |
| 2005 | Toyota | 4Runner | — | — | — | 4.7L | V8 | N/A | — |
| 2005 | Toyota | Sequoia | — | — | Automatic | — | — | N/A | — |
| 2005 | Toyota | Tacoma | — | — | Automatic | — | — | N/A | — |
| 2005 | Toyota | Tundra | — | — | Automatic | — | — | N/A | — |
| No rows match your filter. | |||||||||
Directly replaces or cross-references 5 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Standard Ignition — NS-5048454004010NS6722S41279SW8585