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.
Description & Operation: Introduction
Vehicles are equipped with a electronically controlled shift interlock system. Shift interlock system prevents gearshift lever from being moved from "P" position unless brake pedal is depressed. Key cannot be removed from ignition switch unless gearshift lever is in "P" position. In case of a malfunction, gearshift lever can be released by depressing shift interlock emergency override button located near gearshift lever. System consists of brakelight switch, shift lock actuator, park position switch and shift interlock override button. For Miata and Millenia models, see Fig 1 and Fig 2 . System is controlled by shift lock control unit incorporated in shift lock actuator.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.
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