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.
2016 Scion iA Automatic TransFACTORY OEM SERVICE PROCEDURE
Smart Key System
SMART KEY SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC Code | Description |
|---|---|
| B10C61F | Exterior Trunk Antenna Circuit Intermittent |
| B10C71F | Interior Trunk Antenna Circuit Intermittent |
| B10C91F | Interior Front Antenna Circuit Intermittent |
| B10D123 | Left front Lock button Signal Stuck Low |
| B10D323 | Right front Lock button Signal Stuck Low |
| B11FD1F | Left Front Exterior Antenna Circuit Intermittent |
| B12101F | Right Front Exterior Antenna Circuit Intermittent |
| B13C304 | Antenna Control Module System Internal Failures |
| B13C309 | Antenna Control Module Component Failures |
| B13C316 | Antenna Control Module Circuit Voltage Below Threshold |
| B13C329 | Antenna Control Module Signal Signal Invalid |
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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