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.
Security System / Keyless Entry System - Symptom Troubleshooting (Except Hybrid)
2015 Acura MDX BaseSECTION Security System / Keyless Entry System - Symptom Troubleshooting (Except Hybrid)
- Keyless Access System Symptom Troubleshooting
- The Doors Will Not Unlock Or Lock With The Door Outer Handle Touch Sensor Or Lock Switch, But Will Unlock Or Lock With The Keyless Remote (2017 2018 2019 2020)
- The Doors Will Not Unlock Or Lock With The Keyless Remote, But Will Unlock Or Lock With The Door Outer Handles
- The Engine Starts But Stalls Immediately
- The Key-In Reminder Does Not Sound
- The Key-In Reminder Sounds In Vehicle Off Mode When Door Is Open
- Keyless/Power Door Locks/Security System Symptom Troubleshooting
- Auto Door Unlock Does Not Work (2014 2015)
- Auto Door Unlock Does Not Work (2016)
- Auto Door Unlock Does Not Work (2017 2018 2019 2020)
- Doors Automatically Relock 30 Seconds After Being Unlocked With The Remote Even Though A Door Has Been Opened (2014 2015 2016)
- Doors Automatically Relock 30 Seconds After Being Unlocked With The Remote Even Though A Door Has Been Opened (2017 2018 2019 2020)
- Security Alarm System Will Not Arm (2014 2015)
- Security Alarm System Will Not Arm (2016)
- Security Alarm System Will Not Arm (2017 2018 2019 2020)
- The Horn Does Not Sound And/Or The Headlights Do Not Flash When The Panic Button On The Remote Is Pressed
- Circuit Troubleshooting
- Keyless Access System Touch Sensor Circuit Troubleshooting (2014 2015 2016)
- Keyless Access System Touch Sensor Circuit Troubleshooting (2017 2018 2019 2020)
- Keyless Buzzer Circuit Troubleshooting (2014 2015)
- Keyless Buzzer Circuit Troubleshooting (2016)
- Keyless Buzzer Circuit Troubleshooting (2017 2018 2019 2020)
RENDER: 1.0x
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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.