Review on 🚗 GELUOXI Voltage Converter Module for Mercedes Benz C180 Base C300 C43 AMG E400 GLC250 S500 S65 AMG - 2059053414 2059052809 2054400073: An in-depth review by William Bell

When the voltage converter fails you usually see error messages on the onboard communications screen which can be one or both "auxiliary battery failed" or "stop car switch" . in P to run the engine. Keep in mind that this converter may or may not fix the latter on its own. If the converter fails along with the car with an old battery that is not working properly, you may still get the error message "Stop shifting car to P, keep engine running". This happens if the batteries drop below 12.5V at any point. Also, there may be times when you can no longer use the Eco Start/Stop function, or rather, the car can use the Start/Stop function even after a Do not use converter change anymore. The next step is to replace the (single) main battery in the car. There is no need to reset the battery counter or clear the ECM when replacing the battery in the W205. The system is simply restarted after the battery change. After replacing both items, all systems should return to normal operation with no error messages. If not, you can check online how to reset all trouble codes via service mode.