Resolve Auto Start Issue in Honda Pilots | Comprehensive Fixes
Table of Contents
- Introduction: Issue with Auto Stop Start Feature in Honda Pilots
- Checking the Battery
- Testing the Battery
- Replacing the Battery
- Checking Terminals for Corrosion
- Cleaning and Securing Terminals
- Software Update
- Updating the PCM and TCM
- Reducing Frequency of Auto Stop Mode
- Testing the Updated System
- Valve Adjustment
- Performing Valve Adjustment
- Setting Valve Lash to Middle of Specification
- Retesting and Duplicating the Issue
- Seeking Professional Help
- Suspecting a Bad Starter
- Consulting Automotive Experts
- Conclusion: Fixes for the Auto Stop Start Issue in Honda Pilots
- Highlights
- FAQ
🔍 Introduction: Issue with Auto Stop Start Feature in Honda Pilots
In this article, we will address an issue with the Auto Stop Start feature in Honda Pilots manufactured between 2016 and 2022. This feature, designed to save fuel by automatically shutting off the engine at stops, can sometimes fail to restart the engine, causing inconvenience and potential safety concerns for drivers. We will explore several potential fixes for this issue, focusing on checking the battery, performing a software update, adjusting valves, and seeking professional assistance if needed.
🔋 Checking the Battery
One of the first steps in resolving the Auto Stop Start issue is to check the vehicle's battery. This can be done by testing the battery's performance or visually inspecting for signs of aging or damage. If the battery is two to three years old and shows signs of deterioration, it may be necessary to replace it. Additionally, checking the terminals for corrosion and ensuring they are securely connected is crucial for proper electrical function.
Testing the Battery: If you have a battery tester, thoroughly test the battery's voltage and capacity. If not, a simple test involves turning on the lights and blower motor for five minutes and rechecking the battery's performance. This helps identify any significant voltage drops that could be contributing to the Auto Stop Start issue.
Replacing the Battery: If testing reveals that the battery is weak or failing, it is recommended to replace it with a new one. A weak battery can affect the overall electrical system, leading to irregular operation of features such as the Auto Stop Start.
Checking Terminals for Corrosion: Inspect the battery terminals for any signs of corrosion. Corrosion can affect the quality of electrical connections and may disrupt the proper functioning of the Auto Stop Start feature. Twist the terminals to ensure they are secure and not loose.
Cleaning and Securing Terminals: If corrosion is present, clean the terminals using a suitable terminal cleaner or a mixture of baking soda and water. After cleaning, securely fasten the terminals to prevent any movement or poor electrical contact. Pay particular attention to the ground cable as corrosion on it can be a common cause for the Auto Stop Start issue.
🔄 Software Update
Another potential solution for the Auto Stop Start issue is performing a software update on the Vehicle's Powertrain Control Module (PCM) and Transmission Control Module (TCM). These updates aim to tighten the parameters and reduce the frequency of the Auto Stop Start mode, minimizing the chances of the engine failing to restart.
Updating the PCM and TCM: Consult a professional or authorized dealer to perform the software updates. These updates can be done using specialized diagnostic equipment and software provided by the manufacturer.
Reducing Frequency of Auto Stop Mode: After the software update, the Auto Stop Start feature should engage less frequently, reducing the likelihood of the engine not restarting. This adjustment aims to provide a more reliable experience for the driver by limiting the potential inconvenience caused by the Auto Stop Start feature.
Testing the Updated System: After the software update, perform several tests to ensure the issue has been resolved. Attempt to duplicate the issue by intentionally trying to make the engine not start within a reasonable number of attempts, typically around 10. If the issue does not occur within these attempts, it indicates that the software update has successfully addressed the Auto Stop Start issue.
⚙️ Valve Adjustment
If the Auto Stop Start issue persists after the battery check and software update, the next step is to perform a valve adjustment. This adjustment specifically applies to Honda Pilots that have experienced the issue despite the previous fixes.
Performing Valve Adjustment: It is recommended to have a professional perform the valve adjustment. However, if doing it yourself, ensure the engine is as cold as possible and follow the manufacturer's specifications for valve lash adjustment.
Setting Valve Lash to Middle of Specification: Adjust the valve lash to the middle of the manufacturer's specified range. This adjustment ensures the valves are not too loose or too tight, as either extreme can contribute to various engine issues, including the Auto Stop Start problem.
Retesting and Duplicating the Issue: After the valve adjustment, attempt to duplicate the problem by driving the vehicle and stopping at various intervals. If the engine consistently starts without any hesitation or failure during the Auto Stop Start operation, the valve adjustment has likely resolved the issue.
💡 Seeking Professional Help
If the battery check, software update, and valve adjustment do not solve the Auto Stop Start issue, it is advisable to consult automotive professionals or authorized Honda dealers.
Suspecting a Bad Starter: In cases where all other potential causes have been ruled out, a faulty starter may be the root of the problem. A professional inspection and diagnosis can determine whether the starter needs replacement.
Consulting Automotive Experts: Given the complexity of the Auto Stop Start system and the potential causes of failure, it is crucial to seek professional assistance. They have the knowledge, experience, and diagnostic equipment required to accurately diagnose the issue and provide an appropriate solution.
🔚 Conclusion: Fixes for the Auto Stop Start Issue in Honda Pilots
To summarize, resolving the Auto Stop Start issue in Honda Pilots involves systematically checking and addressing potential culprits, such as battery performance, software updates, and valve adjustments. By following the steps outlined in this article, drivers can minimize the occurrences of the engine not starting during the Auto Stop Start operation, ensuring a smoother and more reliable driving experience.
Highlights:
- Auto Stop Start issue in Honda Pilots
- Checking the battery and terminals
- Performing a software update on the PCM and TCM
- Valve adjustment for persisting issues
- Seeking professional assistance if needed
FAQ
Q: How do I know if my Honda Pilot has the Auto Stop Start feature?
A: Look at the shifter - if it has buttons, then your car has the Auto Stop Start feature.
Q: What should I do if my Honda Pilot's engine fails to restart during the Auto Stop Start operation?
A: Start by checking the battery and terminals, then perform a software update. If the issue persists, consider a valve adjustment or consult an automotive professional.
Q: Can a weak battery cause the Auto Stop Start feature to fail?
A: Yes, a weak or failing battery can affect the electrical system, leading to irregular operation of the Auto Stop Start feature.
Q: Should I attempt to perform the valve adjustment myself?
A: It is recommended to have a professional perform the valve adjustment to ensure it is done correctly and within the manufacturer's specifications.
Q: What should I do if the suggested fixes do not resolve the Auto Stop Start issue?
A: If all other potential causes have been ruled out, it is best to consult automotive experts or authorized Honda dealers for further assistance.
