Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Park/Neutral Position Switch (Prius)
Park/Neutral Position (PNP) switch is used only for the hybrid vehicle control system which controls the electric transaxle. PNP switch delivers an input signal to Hybrid Vehicle (HV) control Electronic Control Unit (ECU) to indicate transaxle gear position instead of the Engine Control Module (ECM) like all other models. Hybrid vehicle control ECU is referred to as HV ECU. The HV ECU uses input signal for controlling vehicle movement. PNP switch is located on end of shift lever assembly on steering column and may also be referred to as shift position sensor.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.