The “Stop Start to be Checked” error is a common warning message in vehicles equipped with Stop & Start technology, designed to reduce fuel consumption and emissions. While useful, this system can experience malfunctions. This article details the possible causes, mistakes to avoid, and solutions to effectively address the issue.
1. Main Causes of the “Stop Start to be Checked” Error
Several factors can trigger this warning message:
- Weak or faulty battery: The system relies on a battery in good condition. An aging or undercharged battery disrupts its operation.
- Sensor failure: Faulty sensors (clutch, brake, driver presence, engine temperature) send incorrect signals to the system.
- Unsuitable engine temperature: An engine that is too cold or overheating automatically disables the Stop & Start.
- Alternator problem: A faulty alternator does not properly recharge the battery, affecting the system.
- Outdated software: Software bugs can block the activation of Stop & Start.
- Electrical overload: Intensive use of air conditioning, heating, or multimedia devices drains the battery.
2. Mistakes to Absolutely Avoid
To avoid worsening the situation:
- Ignoring warning signals: A lit warning light or repeated system deactivation should prompt a check.
- Neglecting the battery: A battery not regularly checked risks causing costly breakdowns.
- Forgetting software updates: Manufacturer updates often fix critical bugs.
- Tampering with sensors without expertise: Disconnecting a sensor without prior diagnosis can damage other components.
- Forcing the system: Insisting on activating Stop & Start despite the error risks damaging the engine or electronics.
3. Solutions and Good Maintenance Practices
Here are the steps to resolve the issue:
Technical Checks
- Test the battery: Measure its voltage (ideally 12.6 V with the engine off) and replace it if necessary.
- Diagnose the sensors: Use an OBD2 tool or consult a mechanic to identify faulty sensors.
- Check the alternator: Ensure it delivers a voltage between 13.5 and 14.5 V when the engine is running.
Corrective Actions
- Reset the system: Disconnect the battery for 10 minutes to clear temporary errors.
- Update the software: Visit a dealership to install the latest manufacturer updates.
- Limit energy-intensive accessories: Turn off air conditioning or heating during frequent starts.
Preventive Maintenance
- Clean the battery terminals: Corrosion and dirt disrupt the current.
- Perform regular check-ups: An annual inspection by a professional prevents breakdowns.
4. Conclusion
The “Stop Start to be Checked” error often stems from the battery, sensors, or alternator. By adopting rigorous maintenance and responding quickly to warnings, you minimize the risk of breakdowns. If the problem persists after these checks, consult a qualified mechanic for an in-depth diagnosis.
Tip: To extend the life of the Stop & Start system, prefer regular trips (20+ minutes) allowing the battery to recharge properly.