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 Subaru BRZ Limited, Automatic TransFACTORY OEM SERVICE PROCEDURE
Keyless Entry
ENTRY & START SYSTEM ENTRY SYSTEM (KEYLESS ENTRY) DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC Code | Description | ||
|---|---|---|---|
| B27A1 | [Driver side external antenna output stage open] | ||
| B27A2 | [Passenger side external antenna output stage open] | ||
| B27A5 | [Front internal antenna output stage open] | ||
| B27A6 | [Rear internal antenna output stage open] | ||
| B27A7 | [Trunk/rear gate internal antenna output stage open] | ||
| B27A8 | [Trunk/rear gate external antenna output stage open] | ||
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Factory Service Tools
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.