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.
Driving Assistance Warning Systems - Testing & Troubleshooting (Except Hybrid)
2018 Acura MDX BaseSECTION Driving Assistance Warning Systems - Testing & Troubleshooting (Except Hybrid)
- Connector View
- Symptom Troubleshooting Index for Viewer
- Both FCW and LDW indicators come on at the same time (Temperature too hot)
- Both FCW and LDW indicators do not go off (with LKAS)
- Both FCW and LDW indicators do not go off (without LKAS)
- Both FCW and LDW indicators does not go off
- FCW indicator does not blink when the system is warning (FCW/LDW camera unit is ok)
- FCW indicator does not come on (LDW indicator is ok)
- FCW indicator does not go off (LDW indicator is ok)
- FCW system does not warn when warning is necessary
- FCW system warns when warning is unnecessary
- FCW warning buzzer does not sound when the system is warning (FCW/LDW camera unit is ok)
- HDS does not communicate with the FCW/LDW camera unit
- HDS does not communicate with the multipurpose camera unit (2016 2017 2018 2019 2020)
- LDW OFF switch does not work or OFF indicator does not come on (with LKAS)
- LDW OFF switch does not work or OFF indicator does not come on (without LKAS)
- LDW indicator does not blink when the system is warning (FCW/LDW camera unit is ok)
- LDW indicator does not come on (FCW indicator is ok)
- LDW indicator does not go off (2016 2017 2018 2019 2020)
- LDW indicator does not go off (FCW indicator is ok)
- LDW system does not warn when warning is necessary
- LDW system warns when warning is unnecessary
- LDW warning buzzer does not sound when the system is warning (FCW/LDW camera unit is ok)
- RDM indicator does not go off (2016 2017 2018 2019 2020)
- RDM system does not warn when warning is necessary (2016 2017 2018 2019 2020)
- RDM system warns when warning is unnecessary (2016 2017 2018 2019 2020)
- RDM/LDW indicator does not come on (2016 2017 2018 2019 2020)
- RDM/LDW warning buzzer does not sound (2016 2017 2018 2019 2020)
- Component Location Index
- Description & Operation
- Driving Support System Description - Overview (2016)
- Driving Support System Description - Overview (2017 2018 2019 2020)
- Forward Collision Warning System Description - Overview (2014 2015 2016)
- Forward Collision Warning System Description - System Diagram (2014 2015 2016)
- Lane Departure Warning System Description - Overview (2014 2015 2016)
- Lane Departure Warning System Description - System Diagram (2014 2015 2016)
- Road Departure Mitigation System Description - Overview (2016 2017 2018 2019 2020)
- Road Departure Mitigation System Description - System Diagram (2016 2017 2018 2019 2020)
- Test
- Rewrite
- How to Information
- How to Troubleshoot the Forward Collision Warning (FCW)
- How to Troubleshoot the Road Departure Mitigation (2016 2017 2018 2019 2020)
- Aiming
- Symptom Troubleshooting Index
- Circuit Diagram
- Auto High-Beam (High-Beam Support System) Circuit Diagram (2019 2020)
- Forward Collision Warning (FCW) Circuit Diagram
- Lane Departure Warning (LDW) Circuit Diagram
- Road Departure Mitigation Circuit Diagram (2016)
- Road Departure Mitigation Circuit Diagram (2017 2018)
- Road Departure Mitigation Circuit Diagram (2019 2020)
- DTC Troubleshooting Index
- Symptom Troubleshooting
- Forward Collision Warning (FCW) Symptom Troubleshooting - Both FCW and LDW indicator do not go off (with LKAS)
- Forward Collision Warning (FCW) Symptom Troubleshooting - Both FCW and LDW indicator do not go off (without LKAS)
- Forward Collision Warning (FCW) Symptom Troubleshooting - FCW indicator does not blink when the system is warning/FCW warning buzzer does not sound when the system is warning
- Forward Collision Warning (FCW) Symptom Troubleshooting - FCW indicator does not come on (LDW indicator is ok)
- Forward Collision Warning (FCW) Symptom Troubleshooting - FCW indicator does not go off (LDW indicator is ok)
- Lane Departure Warning (LDW) Symptom Troubleshooting - LDW OFF switch does not work or OFF indicator does not come on (with LKAS)
- Lane Departure Warning (LDW) Symptom Troubleshooting - LDW OFF switch does not work or OFF indicator does not come on (without LKAS)
- Lane Departure Warning (LDW) Symptom Troubleshooting - LDW indicator does not blink when the system warns/LDW warning buzzer does not sound when the system warns
- Lane Departure Warning (LDW) Symptom Troubleshooting - LDW indicator does not come on (FCW indicator is ok)
- Lane Departure Warning (LDW) Symptom Troubleshooting - LDW indicator does not go off (FCW indicator is ok)
- Road Departure Mitigation Symptom Troubleshooting - LDW indicator does not go off (2016 2017 2018 2019 2020)
- Road Departure Mitigation Symptom Troubleshooting - RDM indicator does not go off (2016 2017 2018)
- Road Departure Mitigation Symptom Troubleshooting - RDM indicator does not go off (2019 2020)
- Road Departure Mitigation Symptom Troubleshooting - RDM/LDW indicator does not come on (2016 2017 2018 2019 2020)
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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.