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.
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HOMESERVICE MANUALSTOYOTA2018PRIUS TWO ECOREPAIR AND DIAGNOSISELECTRICALGAUGESHEADUP DISPLAY - DIAGNOSTIC CODES & CIRCUIT TESTS
2018 Toyota Prius Two Eco
HEADUP Display - Diagnostic Codes & Circuit Tests
2018 Toyota Prius Two EcoSECTION HEADUP Display - Diagnostic Codes & Circuit Tests
- HEADUP Display System
- DTC B150A: Lost Communication with HMI-LAN [11/2015 - 08/2016]
- DTC B150A: Lost Communication with HMI-LAN [08/2016 - 08/2019]
- DTC B150A: Lost Communication with HMI-LAN [08/2019 - ]
- DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0142: Lost Communication with Body Control Module "B"; DTC U0163: Lost Communication with Navigation Control Module; DTC U023A: Lost Communication with Front Camera Module; DTC U1104: Lost Communication with Driving Support ECU [11/2015 - 12/2018]
- DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0142: Lost Communication with Body Control Module "B"; DTC U0163: Lost Communication with Navigation Control Module; DTC U023A: Lost Communication with Front Camera Module; DTC U1104: Lost Communication with Driving Support ECU [12/2018 - 08/2019]
- DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0142: Lost Communication with Body Control Module "B"; DTC U0163: Lost Communication with Navigation Control Module; DTC U023A: Lost Communication with Front Camera Module; DTC U1104: Lost Communication with Driving Support ECU [08/2019 - 07/2020]
- DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0142: Lost Communication with Body Control Module "B"; DTC U0163: Lost Communication with Navigation Control Module; DTC U023A: Lost Communication with Front Camera Module [07/2020 - ]
- Circuit Tests
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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.