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 MANUALSACURA2015TLX BASE, 2.4L ENGREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCRUISE CONTROL SYSTEMSCRUISE CONTROL SYSTEM - TESTING & TROUBLESHOOTING
2015 Acura TLX Base, 2.4L Eng
Cruise Control System - Testing & Troubleshooting
2015 Acura TLX Base, 2.4L EngSECTION Cruise Control System - Testing & Troubleshooting
- Component Location Index
- How To Information
- How To Troubleshoot The Adaptive Cruise Control (ACC)
- ACC Indicator (Amber)
- Multi-Information Display (MID) Indication
- Self-Diagnostic Function
- Multipurpose Camera Unit
- Millimeter Wave Radar
- CAN Communication
- Millimeter Wave Radar Aiming
- Intermittent Failures
- How to Troubleshoot DTCs
- How to Retrieve DTCs
- How to Clear DTCs
- How to Read ACC System Auto Stop Control History
- How To Troubleshoot The Collision Mitigation Braking System (CMBS)
- How To Troubleshoot The Adaptive Cruise Control (ACC)
- Description
- Adaptive Cruise Control (ACC) System Description - Control/Function (With Auto Idle Stop System)
- Adaptive Cruise Control (ACC) System Description - Control/Function (Without Auto Idle Stop System)
- Adaptive Cruise Control (ACC) System Description - Overview
- Collision Mitigation Brake System (CMBS) Description - Overview
- Cruise Control System Description - Overview
- Cruise Control System Description - System Diagram
- Lane Keeping Assist System (LKAS) System Description - Overview
- Lane Keeping Assist System (LKAS) System Description - System Diagram
- Testing
- Circuit Diagram
- Adaptive Cruise Control (ACC) Circuit Diagram (With Auto Idle Stop System) (2015-17)
- Adaptive Cruise Control (ACC) Circuit Diagram (With Auto Idle Stop System) (2018-19)
- Adaptive Cruise Control (ACC) Circuit Diagram (Without Auto Idle Stop System) (2015-17)
- Adaptive Cruise Control (ACC) Circuit Diagram (Without Auto Idle Stop System) (2018-19)
- Collision Mitigation Braking System (CMBS) Circuit Diagram (With Auto Idle Stop System) (2015-17)
- Collision Mitigation Braking System (CMBS) Circuit Diagram (With Auto Idle Stop System) (2018-19)
- Collision Mitigation Braking System (CMBS) Circuit Diagram (Without Auto Idle Stop System) (2015-17)
- Collision Mitigation Braking System (CMBS) Circuit Diagram (Without Auto Idle Stop System) (2018-19)
- Cruise Control Circuit Diagram (With Auto Idle Stop System)
- Cruise Control Circuit Diagram (Without Auto Idle Stop System)
- Lane Keeping Assist System (LKAS) Circuit Diagram (With Auto Idle Stop System) (2015-17)
- Lane Keeping Assist System (LKAS) Circuit Diagram (With Auto Idle Stop System) (2018-19)
- Lane Keeping Assist System (LKAS) Circuit Diagram (Without Auto Idle Stop System) (2015-17)
- Lane Keeping Assist System (LKAS) Circuit Diagram (Without Auto Idle Stop System) (2018-19)
- Adaptive Cruise Control (ACC) Symptom Troubleshooting
- ACC Activation Indicator Does Not Come On
- ACC Activation Indicator Does Not Go Off
- ACC Indicator Does Not Come On (With Auto Idle Stop System)
- ACC Indicator Does Not Come On (Without Auto Idle Stop System)
- ACC Indicator Does Not Go Off (With Auto Idle Stop System)
- ACC Indicator Does Not Go Off (Without Auto Idle Stop System)
- Does Not Sense The Vehicle Driving Ahead
- Intermittently Senses The Vehicle Driving Ahead
- Senses A Vehicle Driving In Another Lane
- Adaptive Cruise Control (ACC) Symptom Troubleshooting Index (Adaptive Cruise Control)
- Set Distance Cannot Be Adjusted With The Distance Switch (Adaptive Cruise Control)
- Set Speed Does Not Cancel When The MAIN Switch Is Turned Off (Adaptive Cruise Control)
- Set Speed Does Not Cancel When The Brake Pedal Is Pressed (Adaptive Cruise Control)
- Vehicle Does Not Decelerate Or Accelerate Accordingly When The SET Or RES Switch Is Pressed (Adaptive Cruise Control)
- Vehicle Speed Can Be Set, But There Is No ACC Indication On The MID (Adaptive Cruise Control)
- Vehicle Speed Can Be Set, But Vehicle Decelerates (Adaptive Cruise Control)
- Vehicle Speed Cannot Be Set When The SET Switch Is Pressed (Between The 25 mph (40 km/h) And 90 mph (145 km/h)) (Adaptive Cruise Control)
- Collision Mitigation Braking System (CMBS) Symptom Troubleshooting
- CMBS OFF Switch Does Not Turn On/Turn Off (CMBS Indicator Does Not Change)
- CMBS Indicator Does Not Come On
- CMBS Indicator Does Not Go Off
- FCW Indicator Does Not Go Off
- Collision Mitigation Braking System (CMBS) Symptom Troubleshooting Index
- The CMBS Did Not Operate
- The CMBS Operated Without Danger Of Collision
- The CMBS Operates Frequently
- The MID Does Not Indicate When The CMBS OFF Switch Is Operated
- The Buzzer Does Not Sound When The CMBS OFF Switch Is Operated
- Though CMBS Operates, The Information Is Not Displayed On The MID
- Lane Keeping Assist System (LKAS) Symptom Troubleshooting
- LKAS Activation Indicator (On The MID) Does Not Come On (With ACC)
- LKAS Activation Indicator (On The MID) Does Not Come On (Without ACC)
- LKAS Activation Indicator (On The MID) Does Not Go Off (With ACC)
- LKAS Activation Indicator (On The MID) Does Not Go Off (Without ACC)
- LKAS Indicator (On The MID) Does Not Come On (With Auto Idle Stop System)
- LKAS Indicator (On The MID) Does Not Come On (Without Auto Idle Stop System)
- LKAS Indicator (On The MID) Does Not Go Off (With Auto Idle Stop System and ACC)
- LKAS Indicator (On The MID) Does Not Go Off (With Auto Idle Stop System, Without ACC)
- LKAS Indicator (On The MID) Does Not Go Off (Without Auto Idle Stop System And ACC)
- LKAS Indicator (On The MID) Does Not Go Off (Without Auto Idle Stop System, Without ACC)
- Cruise Control Symptom Troubleshooting
- Cruise Control Symptom Troubleshooting Index (Cruise Control)
- Cruise Control Can Be Set, But The Cruise Main Indicator Or The Cruise Control Indicator Do Not Come On (Cruise Control)
- Cruise Control Cannot Be Set (Cruise Control)
- Set Speed Does Not Cancel When The Brake Pedal Is Pressed (Cruise Control)
- Set Speed Does Not Cancel When The Cancel Switch Is Pressed (Cruise Control)
- Set Speed Does Not Cancel When The Cruise Control Main Switch Is Pressed (Cruise Control)
- Set Speed Does Not Resume When The Res/+ Switch Is Pressed (With The Cruise Control Main Switch Pressed On, And Set Speed Temporarily Canceled By Pressing The Brake Pedal) (Cruise Control)
- Vehicle Does Not Accelerate Accordingly When The Res/+ Switch Is Pressed (Cruise Control)
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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.