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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSTOYOTA20184RUNNER SR5, 4WDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTANTI-THEFT SYSTEMSSMART KEY SYSTEM (FOR START FUNCTION) - DIAGNOSTIC CODES & SYMPTOM TESTS
2018 Toyota 4Runner SR5, 4WD
Smart Key System (For Start Function) - Diagnostic Codes & Symptom Tests
2018 Toyota 4Runner SR5, 4WDSECTION Smart Key System (For Start Function) - Diagnostic Codes & Symptom Tests
- SMART KEY SYSTEM (for Start Function)
- DTC B2271: Ignition Hold Monitor Malfunction [08/2015 - 08/2019]
- DTC B2271: Ignition Hold Monitor [08/2019 - ]
- DTC B2274: ACC Monitor Malfunction [08/2015 - 08/2019]
- DTC B2274: ACC Monitor [08/2019 - ]
- DTC B2277: Detecting Vehicle Submersion [08/2015 - 08/2019]
- DTC B2277: Detecting Vehicle Submersion [08/2019 - ]
- DTC B2282: Vehicle Speed Signal Malfunction; DTC B2283: Vehicle Speed Sensor Malfunction [08/2015 - 08/2019]
- DTC B2282: Vehicle Speed Signal (Cable-Information does not match to BEAN-Information); DTC B2283: Vehicle Speed Sensor [08/2019 - 08/2021]
- DTC B2282: Vehicle Speed Signal (Cable-Information does not match to BEAN-Information); DTC B2283: Vehicle Speed Sensor [08/2021 - 08/2022]
- DTC B2282: Vehicle Speed Signal (Cable-Information does not match to BEAN-Information); DTC B2283: Vehicle Speed Sensor [08/2022 - ]
- DTC B2284: Brake Signal Malfunction [08/2015 - 08/2019]
- DTC B2284: Brake Signal (Cable-Information does not match to BEAN-Information) [08/2019 - ]
- DTC B2285: Steering Lock Position Signal Circuit Malfunction [08/2015 - 08/2019]
- DTC B2285: Steering Lock Position Signal (Cable-Information does not match to LIN-Information) [08/2019 - 08/2022]
- DTC B2286: Runnable Signal Malfunction; DTC P0335: Crankshaft Position Sensor Circuit Malfunction (NE Signal) [08/2015 - 08/2019]
- DTC B2286: Run able Signal (Cable-Information does not match to BEAN-Information); DTC P0335: Crankshaft Position Sensor "A" Circuit [08/2019 - ]
- DTC U0100: Lost Communication with ECM / PCM; DTC U0129: Lost Communication with Brake System Control Module; DTC U0142: Lost Communication with Main Body ECU; DTC U0155: Lost Communication with Combination Meter [08/2015 - 08/2019]
- DTC U1000: Lost Communication from ECM to TCM; DTC U0140: Lost Communication with Main Body ECU; DTC U0142: Lost Communication With Body Control Module "B"; DTC U0155: Lost Communication with Combination Meter; DTC U1117: Lost Communication with Accessory Gateway [08/2019 - ]
- Engine does not Start [08/2015 - 08/2019]
- Engine does not Start [08/2019 - 08/2021]
- Engine does not Start [08/2021 - 08/2022]
- Engine does not Start [08/2022 - ]
- Power Source Mode does not Change to ON (IG and ACC) [08/2015 - 08/2019]
- Power Source Mode does not Change to ON (IG and ACC) [08/2019 - ]
- Power Source Mode does not Change to ON (IG) [08/2015 - 08/2019]
- Power Source Mode does not Change to ON (IG) [08/2019 - ]
- Power Source Mode does not Change to ON (ACC) [08/2015 - 08/2019]
- Power Source Mode does not Change to ON (ACC) [08/2019 - ]
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.