What is the role of the Neutral Safety Switch in preventing accidental movement during engine cranking, and how to test, adjust, or replace it on Nissan Quest?

The range sensor prevents accidental movement caused by engine cranking with the shift selector in reverse or forward gears, as it is wired in series with the starter relay, allowing the starter motor to crank only when the transaxle is in Park or Neutral. To test the transaxle range sensor, disconnect the electrical connectors, which include an 8-pin connector and a 2-pin connector that governs the starter circuit. Move the shift lever into each position and check for continuity between the indicated terminals; if continuity isn't as designated, attempt to adjust the switch, and if adjustment fails, replace the switch. For adjustment, raise the vehicle securely on jackstands, remove the splash shield, shift the selector lever into Neutral, and remove the shift cable lock nut on the range sensor linkage arm. Loosen the switch mounting bolts slightly, insert a drill bit through the hole in the lever into the alignment hole in the range sensor, then tighten the mounting bolts to the specified torque. Ensure continuity exists on the designated terminals before reinstalling the shift cable, reversing the removal process. For replacement, raise the vehicle securely, disconnect the range sensor electrical connectors, place the shift lever in Neutral, and remove the mounting bolts for the transaxle range sensor. Install the new switch onto the control shaft, ensuring it remains in Neutral while tightening the bolts, then adjust the range sensor as previously described, confirming that the engine starts only when the shift lever is in Neutral or Park.

Genuine Nissan Quest Neutral Safety Switch

Transmission Neutral Safety Switch

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7 Neutral Safety Switches found

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Nissan Quest Neutral Safety Switch
Part Number: 31918-3AX01
$51.44 MSRP: $74.50
You Save: $23.06 (31%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Switch Assy-Inhibitor ; Park/Neutral Position Switch
- Manufacturer Note: JAPAN PART
- Replaces: 31918-3AX00, 31918-31X13
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2000-2007 Nissan Quest | GXE, S, SE, SL | 6 Cyl 3.3L, 6 Cyl 3.5L | VG33E, VQ35DE
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Nissan Quest Neutral Safety Switch Sensor
Part Number: 31918-8Y000
$125.69 MSRP: $173.37
You Save: $47.68 (28%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Switch Assy-Pnp (Inhibitor) ; Park/Neutral Position Switch; Neutral Safety Switch
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2004-2010 Nissan Quest | Base, S, SE, SL | 6 Cyl 3.5L | VQ35DE
View related parts
Nissan Quest Neutral Safety Switch
Part Number: 31918-31X13
$51.44 MSRP: $74.50
You Save: $23.06 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Switch Assy-Inhibitor ; Park/Neutral Position Switch
- Manufacturer Note: JAPAN PART
- Replaced by: 31918-3AX01
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2000-2003 Nissan Quest | GXE, SE | 6 Cyl 3.3L | VG33E
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Nissan Quest Neutral Safety Switch
Part Number: 31918-80L00
Product Specifications
- Other Name: Switch Assy-Inhibitor ; Park/Neutral Position Switch
- Replaced by: 31918-80L0A
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 1999-2003 Nissan Quest | GXE, SE | 6 Cyl 3.3L | VG33E
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Nissan Quest Park/Neutral Position Switch
Part Number: 31918-80X02
Product Specifications
- Other Name: Switch-Inhibitr; Back-Up Switch, Neutral Safety Switch
- Replaces: 31918-80X00
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 1993-1997 Nissan Quest | GXE, XE | 6 Cyl 3.0L | VG30E
View related parts
Nissan Quest Neutral Safety Switch
Part Number: 31918-80X00
Product Specifications
- Other Name: Switch Assy-Inhibitor ; Park/Neutral Position Switch
- Replaced by: 31918-80X02
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 1993-1995 Nissan Quest | GXE, XE | 6 Cyl 3.0L | VG30E
View related parts
Nissan Quest Neutral Safety Switch
Part Number: 31918-80X21
Product Specifications
- Other Name: Switch Assy-Inhibitor ; Park/Neutral Position Switch
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 1996-1998 Nissan Quest | GXE, XE | 6 Cyl 3.0L | VG30E

Nissan Quest Neutral Safety Switch

The Nissan Quest Neutral Safety Switch is a component that prevents the minivan from cranking unless the automatic transmission of the vehicle is in the neutral or park position. This ensures the safety of the driver and bystanders. Through a process by which the Neutral Safety Switch acts as an electrical gatekeeper, it interrupts the starter circuit when the shifter is in any drive gear. Thus, turning the key without first selecting a safe spot leaves the engine silent rather than lurching the vehicle. The Neutral Safety Switch effectively keeps the engine quiet through a reliable process rather than sending the vehicle into motion. Every Nissan built for the family-oriented Quest line features a Neutral Safety Switch that sends a signal to the ignition pathway when the internal contact on the gearbox aligns with the neutral or park detent, thus allowing current to flow. Although the model years vary in exterior styling and cabin tech, engineering around this principle has remained consistent. It is also a contact style sensor, a more basic one. This standard measurement is engineered into the car. Each automobile uses this same Neutral Safety Switch principle. The earlier versions of the manual cars relied on the clutch but not anymore. Because of this, owners will have a similar start-up routine no matter the generation of the Nissan minivan. Quest owners will know the vehicle won't move until it verifies a safe gear selection.

If you need any OEM Nissan Quest Neutral Safety Switch, feel free to choose them out of our huge selection of genuine Nissan Quest Neutral Safety Switch. All our parts are offered at unbeatable prices and are supported by the manufacturer's warranty. In addition, we offer quick shipping to have your parts delivered to your door step in a matter of days.

Nissan Quest Neutral Safety Switch Parts Questions & Experts Answers

Park/Neutral Position Switch
31918-80X02
Q: What is the role of the Neutral Safety Switch in preventing accidental movement during engine cranking, and how to test, adjust, or replace it on Nissan Quest?
A:
The range sensor prevents accidental movement caused by engine cranking with the shift selector in reverse or forward gears, as it is wired in series with the starter relay, allowing the starter motor to crank only when the transaxle is in Park or Neutral. To test the transaxle range sensor, disconnect the electrical connectors, which include an 8-pin connector and a 2-pin connector that governs the starter circuit. Move the shift lever into each position and check for continuity between the indicated terminals; if continuity isn't as designated, attempt to adjust the switch, and if adjustment fails, replace the switch. For adjustment, raise the vehicle securely on jackstands, remove the splash shield, shift the selector lever into Neutral, and remove the shift cable lock nut on the range sensor linkage arm. Loosen the switch mounting bolts slightly, insert a drill bit through the hole in the lever into the alignment hole in the range sensor, then tighten the mounting bolts to the specified torque. Ensure continuity exists on the designated terminals before reinstalling the shift cable, reversing the removal process. For replacement, raise the vehicle securely, disconnect the range sensor electrical connectors, place the shift lever in Neutral, and remove the mounting bolts for the transaxle range sensor. Install the new switch onto the control shaft, ensuring it remains in Neutral while tightening the bolts, then adjust the range sensor as previously described, confirming that the engine starts only when the shift lever is in Neutral or Park.