2017 Lexus ES 300hFACTORY OEM SERVICE PROCEDURE

Smart Access System With Push-Button Start (For Entry Function)

SMART ACCESS SYSTEM WITH PUSH-BUTTON START (FOR ENTRY FUNCTION) DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION

DTC Code Detection Item Refer To
B27A1 Open in Driver Side Electrical Antenna Circuit Refer to DTC B27A1: Open in Driver Side Electrical Antenna Circuit [07/2015 - ]
B27A2 Open in Front Passenger Side Electrical Antenna Circuit Refer to DTC B27A2: Open in Front Passenger Side Electrical Antenna Circuit [07/2015 - ]
B27A3 Open in Rear Door Electrical Antenna Circuit, Drivers Side Refer to DTC B27A3: Open in Rear Door Electrical Antenna Circuit, Drivers Side [07/2015 - ]
B27A4 Open in Rear Door Electrical Antenna Circuit, Front Passengers Side Refer to DTC B27A4: Open in Rear Door Electrical Antenna Circuit, Front Passengers Side [07/2015 - ]
B27A5 Open in Front Floor Electrical Key Oscillator Circuit Refer to DTC B27A5: Open in Front Floor Electrical Key Oscillator Circuit [07/2015 - ]
B27A6 Open in Rear Floor Electrical Key Oscillator Circuit Refer to DTC B27A6: Open in Rear Floor Electrical Key Oscillator Circuit [07/2015 - ]
B27A7 Open in Inside Luggage Compartment Electrical Key Oscillator Circuit Refer to DTC B27A7: Open in Inside Luggage Compartment Electrical Key Oscillator Circuit [07/2015 - ]
B27A8 Open in Outside Luggage Compartment Electrical Key Antenna Circuit Refer to DTC B27A8: Open in Outside Luggage Compartment Electrical Key Antenna Circuit [07/2015 - ]
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.

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