Help make sure your starter engages only when the car is in Park or Neutral with the Standard Ignition Neutral Safety Switch NS737. This Standard Ignition switch is a direct-fit OE replacement for the 2014-2017 Toyota Corolla. See the "Vehicles it fits" section for engine-specific application details.
A neutral safety switch reads the shifter's selected position. It lets the starting circuit close only when the shifter is in Park or Neutral. If the original switch has failed, NS737 replaces it with a unit designed to match its fit, form and function.
Signs this part may need replacing: the engine won't crank with the shifter in Park, cranks only after moving the shifter to Neutral or jiggling it, or starts only intermittently. A weak battery, a faulty starter or a wiring fault can cause a similar no-crank condition, so diagnose the cause before replacing the switch.
Interchange: CSW634 · NS7139 · 8454052070
This part cross-references / interchanges with the following part numbers:
What does the NS737 neutral safety switch do?
It lets the starting circuit close only when the shifter is in Park or Neutral. This helps prevent the engine from cranking while the vehicle is in gear.
Which vehicle does this neutral safety switch fit?
It is listed for the 2014-2017 Toyota Corolla. See the "Vehicles it fits" section for engine-specific application details.
What are the signs of a failing neutral safety switch?
Common signs include no crank in Park, a start only after moving the shifter to Neutral or jiggling it, and intermittent no-starts. Diagnose first, since a battery or starter fault can cause similar symptoms.
Which part numbers does the NS737 interchange with?
It interchanges with CSW634, NS7139 and 8454052070.
How is the NS737 built?
It uses copper alloy conductors for electrical conductivity with low resistive losses. Its robust design uses high-grade materials that meet stringent quality standards.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
