Greetings, everyone.
I own a 2017 C220 Executive Estate.
Despite doing extensive web research for many days, I have been unable to locate definitive evidence pertaining to my specific need. Consequently, I have decided to seek assistance on this platform.
Previously, I received a notification indicating "Auxiliary Battery Failure" on the dashboard. Additionally, the Green A symbol has changed from green to yellow and remains yellow for around 99% of the time. Occasionally, it briefly turns green and functions properly for a few instances of starting and stopping the vehicle. However, it then passes several days without functioning before working again. I cover a monthly distance of 2000 to 4000 miles when driving. The vehicle has accumulated a mileage of 113,000 km. All other functions operate correctly except for the halt Start function.
Based on my investigation, the most probable cause is the Auxiliary Battery. However, I am unable to locate the specific location on my vehicle, the accurate part number, and if it is a component that can be replaced by myself.
Assistance is highly valued.
Gratitude is extended to you.