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.
2015 Toyota Prius TwoFACTORY OEM SERVICE PROCEDURE
SMART KEY SYSTEM (Keyless Entry Function)
SMART KEY SYSTEM (FOR ENTRY FUNCTION) DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC Code | Description |
|---|---|
| B27A1 | Open in Driver Side Electrical Antenna Circuit |
| * B27A2 |
Open in Front Passenger Side Electrical Antenna Circuit |
| B27A5 | Open in Front Floor Electrical Key Oscillator Circuit |
| B27A6 | Open in Rear Floor Electrical Key Oscillator Circuit |
| B27A7 | Open in Inside Luggage Compartment Electrical Key Oscillator Circuit |
| * B27A8 |
Open in Outside Luggage Compartment Electrical Key Antenna Circuit |
Factory Service Tools
Use the Manual With the Right Hardware
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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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