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.
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HOMESERVICE MANUALSTOYOTA2018PRIUS TWO ECOREPAIR AND DIAGNOSIS (SINGLE PAGE)BODY & FRAMEDOOR LOCKSSMART KEY SYSTEM (KEYLESS ENTRY) - SYMPTOM TESTS
2018 Toyota Prius Two Eco
Smart Key System (Keyless Entry) - Symptom Tests
2018 Toyota Prius Two EcoSECTION Smart Key System (Keyless Entry) - Symptom Tests
- SMART KEY SYSTEM (for Entry Function)
- Driver Side Door Entry Unlock Function does not Operate [11/2015 - ]
- Front Passenger Side Door Entry Unlock Function does not Operate [11/2015 - ]
- Driver Side Door Entry Lock and Unlock Functions do not Operate [11/2015 - ]
- Front Passenger Side Door Entry Lock and Unlock Functions do not Operate [11/2015 - ]
- Driver Side Door Entry Lock Function does not Operate [11/2015 - ]
- Front Passenger Side Door Entry Lock Function does not Operate [11/2015 - ]
- Entry Interior Alarm does not Sound [11/2015 - ]
- Back Door Entry Unlock Function does not Operate [11/2015 - ]
- Back Door Entry Lock and Unlock Functions do not Operate [11/2015 - 12/2018]
- Back Door Entry Lock and Unlock Functions do not Operate [12/2018 - ]
- Back Door Entry Lock Function does not Operate [11/2015 - ]
- New Key cannot be Registered [11/2015 - ]
- Additional Key cannot be Registered [11/2015 - ]
- Touching Unlock Sensor for Certain Period of Time does not Unlock All Doors [11/2015 - ]
- New Key Registration Warning Message is not Displayed [11/2015 - ]
- Entry Exterior Alarm and Answer-back Buzzer do not Sound [11/2015 - ]
RENDER: 1.0x
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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.