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.
2015 Acura TLX Base, 2.4L EngFACTORY OEM SERVICE PROCEDURE
Security System Keyless Entry System - Testing & Troubleshooting
- General Information
- Component Location Index
- Description
- Keyless Access System Description - Components
- Keyless Access System Description - Control/Function
- Keyless Access System Description - Failsafe Function
- Keyless Access System Description - Overview
- Keyless Access System Description - System Diagram
- Keyless/Power Door Locks/Security System Description - Components
- Keyless/Power Door Locks/Security System Description - Control/Function
- Keyless/Power Door Locks/Security System Description - Overview (2015-17)
- Keyless/Power Door Locks/Security System Description - Overview (2018-19)
- Keyless/Power Door Locks/Security System Description - System Diagram (2015-17)
- Keyless/Power Door Locks/Security System Description - System Diagram (2018-19)
- Testing
- Door Key Cylinder Switch Test
- Door Lock Actuator Test
- Door Lock Knob Switch Test
- HomeLink Remote Control System Test
- HomeLink Switch Test
- Keyless Access LF Antenna Function Test
- Keyless Access System (Keyless Access Control Unit, Electric Steering Lock, and TPMS Control Unit) Input Test
- Keyless Access System Status Log
- Keyless/Power Door Locks/Security System (MICU, Door Multiplex Control Unit, and Front Passenger's Power Window Switch) Input Test (2015-17)
- Keyless/Power Door Locks/Security System (MICU, Door Multiplex Control Unit, and Front Passenger's Power Window Switch) Input Test (2018-19)
- Park Pin Switch Test (L4)
- Inspection/Adjustment
- System Registration
- Connector For Inputs And Outputs
- Circuit Diagram
- HomeLink Remote Control System Circuit Diagram (2015-17)
- HomeLink Remote Control System Circuit Diagram (2018-19)
- Keyless Access System Circuit Diagram (Without SH-AWD) (2015-17)
- Keyless Access System Circuit Diagram (2018-19)
- Keyless Access System Circuit Diagram (With SH-AWD) (2015-17)
- Keyless/Power Door Locks/Security System Circuit Diagram (Without SH-AWD) (2015-17)
- Keyless/Power Door Locks/Security System Circuit Diagram (2018-19)
- Keyless/Power Door Locks/Security System Circuit Diagram (With SH-AWD) (2015-17)
- Troubleshooting
- Keyless Access System Symptom Troubleshooting
- All The Doors Will Not Lock Or Unlock With Driver's Door Key Cylinder Or Door Lock Switch Or Keyless Remote (2015-17)
- All The Doors Will Not Lock Or Unlock With Driver's Door Key Cylinder Or Door Lock Switch Or Keyless Remote (2018-19)
- Auto Door Unlock Does Not Work (2015-17)
- Auto Door Unlock Does Not Work (2018-19)
- Cannot Select ON Mode With The Keyless Remote Touching The Engine Start/Stop Switch, But Can Select ON Mode With Keyless Access
- Driver's Door Will Not Lock Or Unlock (2015-17)
- Driver's Door Will Not Lock Or Unlock (2018-19)
- Engine Does Not Crank (Power Supply Is Normal)
- Engine Start/Stop Switch Does Not Work
- Front Passenger's And Right Rear Doors Will Not Lock Or Unlock (2015-17)
- Front Passenger's And Right Rear Doors Will Not Lock Or Unlock (2018-19)
- All The Doors Will Not Lock And Unlock
- Cannot Select ON Mode With Keyless Access And With The Keyless Remote Touching The Engine Start/Stop Switch (L4, Without Electric Steering Lock)
- Cannot Select ON Mode With Keyless Access And With The Keyless Remote Touching The Engine Start/Stop Switch (V6, Without Electric Steering Lock)
- Cannot Select ON Mode With Keyless Access And With The Keyless Remote Touching The Engine Start/Stop Switch (With Electric Steering Lock)
- Cannot Select ON Mode With Keyless Access, But Can Select ON Mode With The Keyless Remote Touching The Engine Start/Stop Switch
- Immobilizer Indicator Does Not Go Off Or Does Not Come On
- Keyless Access Indicator Does Not Go Off Or Does Not Come On
- 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
- The Doors Will Not Unlock Or Lock With The Keyless Remote, But Will Unlock Or Lock With The Door Outer Handles
Factory Service Tools
Use the Manual With the Right Hardware
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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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