How to Adjust or Replace the Neutral Safety Switch on Toyota MR2?

In a case where the start of the engine is at a position other than the N, P of the shift selector then there is need to fix the problem. First, unscrew the neutral start switch bolts and engage the shift selector to N range; second turn the groove to the neutral basic line. Align the switch mechanically and fasten the screws to the recommended degree of turn. If the switch cannot be adjusted to eliminate starting in any range apart from N or P, then the switch should be replaced. Continue by disconnecting farther the transaxle control cable from the manual shift lever and then, removing the manual shift lever locknut and the lever itself. Then, remove the switch bolts and the switch, thereafter, put the new switch. To service this area, reinstall the manual shift lever, set the switch as required and finally re-install the transaxle control cable.

Genuine Toyota MR2 Neutral Safety Switch

Transmission Neutral Safety Switch

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6 Neutral Safety Switches found

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Toyota MR2 Neutral Start Switch Assembly
Part Number: 84540-16040
Product Specifications
- Other Name: Switch Assy, Neutral Start; Back Up Switch, Neutral Safety Switch
- Replaces: 84540-32080, 84540-32070
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1993-1995 Toyota MR2 | 4 Cyl 2.0L, 4 Cyl 2.2L | 3SGTE, 5SFE; SW20L-ACMZZA, SW20L-AJMZZA, SW20L-AJMZZK, SW21L-ACMZKA, SW21L-ACPZKA, SW21L-AJMZKA, SW21L-AJMZKK, SW21L-AJPZKA
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Toyota MR2 Clutch Start Switch Assembly
Part Number: 84520-17030
Product Specifications
- Other Name: Switch Assy, Clutch Start
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1992-1995 Toyota MR2 | 4 Cyl 2.0L, 4 Cyl 2.2L | 3SGTE, 5SFE; SW20L-ACMZZA, SW20L-AJMZZA, SW20L-AJMZZK, SW21L-ACMZKA, SW21L-ACPZKA, SW21L-AJMZKA, SW21L-AJMZKK, SW21L-AJPZKA
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Toyota MR2 Neutral Start Switch Assembly
Part Number: 84540-32050
Product Specifications
- Other Name: Switch Assy, Neutral Start; Back Up Switch, Neutral Safety Switch
- Manufacturer Note: MATSUSHITA
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1985-1989 Toyota MR2 | GT, Super Charger | 4 Cyl 1.6L | 4AGELC, 4AGZE; AW11L-WCMQFA, AW11L-WCMQFK, AW11L-WCPQFA, AW11L-WCPQFK, AW11L-WJMQFA, AW11L-WJMQFK, AW11L-WJMQRA, AW11L-WJMQRK, AW11L-WJPQFA, AW11L-WJPQRA
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Toyota MR2 Clutch Start Switch Assembly
Part Number: 84520-17020
Product Specifications
- Other Name: Switch Assy, Clutch Start
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1985-1989 Toyota MR2 | GT, Super Charger | 4 Cyl 1.6L | 4AGELC, 4AGZE; AW11L-WCMQFA, AW11L-WCMQFK, AW11L-WCPQFA, AW11L-WCPQFK, AW11L-WJMQFA, AW11L-WJMQFK, AW11L-WJMQRA, AW11L-WJMQRK, AW11L-WJPQFA, AW11L-WJPQRA
View related parts
Toyota MR2 Clutch Start Switch Assembly
Part Number: 84520-20020
Product Specifications
- Other Name: Switch Assy, Clutch Start; Clutch Switch
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1990-1993 Toyota MR2 | 4 Cyl 2.0L, 4 Cyl 2.2L | 3SGTE, 5SFE; SW20L-ACMZZA, SW20L-AJMZZA, SW20L-AJMZZK, SW21L-ACMZKA, SW21L-ACPZKA, SW21L-AJMZKA, SW21L-AJMZKK, SW21L-AJPZKA
View related parts
Toyota MR2 Neutral Start Switch Assembly
Part Number: 84540-12170
Product Specifications
- Other Name: Switch Assy, Neutral Start; Neutral Safety Switch
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1990-1994 Toyota MR2 | 4 Cyl 2.0L, 4 Cyl 2.2L | 3SGTE, 5SFE; SW20L-ACMZZA, SW20L-AJMZZA, SW20L-AJMZZK, SW21L-ACMZKA, SW21L-ACPZKA, SW21L-AJMZKA, SW21L-AJMZKK, SW21L-AJPZKA

Toyota MR2 Neutral Safety Switch

The Toyota MR2 Neutral Safety Switch is designed to allow the engine to crank only when the gear selector is in park or neutral. This helps to prevent the car from moving unexpectedly either towards the driver or pedestrians. The Neutral Safety Switch in the transmission linkage prevents the current from the battery to the starter motor until the lever goes to a safe position. This is why when the key is turned when in gear, nothing happens. This same principle is employed in every generation of the MR2, despite changes to cockpit layouts and drivetrains. The Neutral Safety Switch in automatic transmissions generally attaches to the shift assembly. Meanwhile, manual versions combine the Neutral Safety Switch logic with a clutch-pedal position. Both paths ensure that the vehicle cannot be started in gear. Regardless of which Toyota model you are in, if the switch fails it merely opens or closes an electric circuit. Drivers will not notice anything abnormal at start-up, just a dash light glow if the shifter is in the wrong place. Over the years, Toyota has continued to stick with the simple on-off architecture instead of complicating things with a sensor. Therefore, if you swap the worn Neutral Safety Switch for a new one, you can expect factory-level reliability. There is no need to recalibrate it. The simple design makes restoration work on MR2 models workable and is a reminder that a simple switch can greatly improve safety.

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Toyota MR2 Neutral Safety Switch Parts Questions & Experts Answers

Clutch Start Switch Assembly
84520-17020
Q: How to Adjust or Replace the Neutral Safety Switch on Toyota MR2?
A:
In a case where the start of the engine is at a position other than the N, P of the shift selector then there is need to fix the problem. First, unscrew the neutral start switch bolts and engage the shift selector to N range; second turn the groove to the neutral basic line. Align the switch mechanically and fasten the screws to the recommended degree of turn. If the switch cannot be adjusted to eliminate starting in any range apart from N or P, then the switch should be replaced. Continue by disconnecting farther the transaxle control cable from the manual shift lever and then, removing the manual shift lever locknut and the lever itself. Then, remove the switch bolts and the switch, thereafter, put the new switch. To service this area, reinstall the manual shift lever, set the switch as required and finally re-install the transaxle control cable.