HomeElectrical, Lighting and Body > SwitchesStandard Ignition NS-70 Neutral Safety Switch
Part #: NS-70

Standard Ignition NS-70 Neutral Safety Switch

⚙️ 13 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Lexus and Toyota, SC300, 4Runner, SC400, and LS400
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Overview of Standard Ignition NS-70 Neutral Safety Switch

The Standard Ignition NS-70 Neutral Safety Switch is designed for reliable electrical performance in select Lexus and Toyota vehicles. This switch ensures safe engine starting by preventing the vehicle from starting in gear, providing an essential safety function for your 4Runner, LS400, SC300, or SC400.

  • Compatible with Lexus and Toyota 4Runner, LS400, SC300, and SC400 models
  • Part number NS-70 for precise identification
  • 9 male blade terminals with one female rectangular connector
  • Durable metal construction with aluminum and plastic finish
  • Bolt mount attachment method with push-on mounting type
  • Operates on standard 12-volt electrical systems
  • Length of 3.875 inches (98.425 mm) for exact fitment

Detailed Product Features and Specifications

The NS-70 neutral safety switch from Standard Ignition features a robust metal body finished in gray and silver aluminum and plastic materials, ensuring durability and resistance to wear. It includes nine male blade terminals and a single female rectangular connector, designed for secure and reliable electrical connections. The switch mounts via bolt mount attachment and push-on mounting type, facilitating straightforward installation without the need for additional mounting hardware. This component is engineered to operate within a 12-volt system, matching the electrical requirements of compatible Lexus and Toyota vehicles.

Function and Application of the NS-70 Neutral Safety Switch

This neutral safety switch is critical for preventing engine start-up unless the transmission is in neutral or park, enhancing vehicle safety. It is commonly used to address issues such as:

  • Engine failing to start due to faulty neutral safety switch
  • Intermittent starting problems linked to electrical connection faults
  • Safety concerns from starting the vehicle in gear
  • Transmission range sensor malfunctions affecting start circuit
  • Electrical shorts or open circuits within the switch terminals

Installation Notes and Tips

Installation of the Standard Ignition NS-70 requires careful handling of the blade terminals and connector to ensure proper electrical contact. Since mounting hardware is not included, use existing bolts or appropriate replacements for secure attachment. Verify the connector’s female rectangular shape aligns correctly with the vehicle’s wiring harness. Ensure the switch is mounted firmly using the bolt mount and push-on method to prevent movement or disconnection during vehicle operation.

Quality Assurance and Warranty Information

Standard Ignition parts are manufactured to meet or exceed OEM specifications, providing dependable performance for your Lexus or Toyota vehicle. While specific warranty details for the NS-70 neutral safety switch are not provided here, Standard Ignition typically offers limited warranties covering defects in material and workmanship. For warranty claims or further information, consult the product documentation or authorized service providers.

BrandStandard Ignition
Part NumberNS-70
ColorBlack
Connector GenderFemale
FinishAluminum, Plastic
Terminal GenderMale
Terminal TypeBlade Terminals

This part fits 13 vehicles. Search below:

YearMakeModelTransmissionPositionNotes
1994LexusSC300AutomaticN/A
1994Toyota4RunnerAutomaticN/A
1993LexusSC300AutomaticN/A
1993LexusSC400AutomaticN/A
1993Toyota4RunnerAutomaticN/A
1992LexusLS400AutomaticN/A
1992LexusSC300AutomaticN/A
1992LexusSC400AutomaticN/A
1992Toyota4RunnerAutomaticN/A
1991LexusLS400AutomaticN/A
1991Toyota4RunnerAutomaticN/A
1990LexusLS400AutomaticN/A
1990Toyota4RunnerAutomaticN/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

18-16841S547453-31658845403504088923361JA4052NS250NS6435S9266

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.