Mercedes-Benz ML320 fuel gauge not functioning, remains at zero despite tank fill on Mercedes-Benz ML320

Some Mercedes-Benz ML320 owners report experiencing issues with the fuel gauge remaining at zero even after filling the tank. A common cause for this problem is a faulty fuel sending unit, which may require inspection and potential replacement along with the fuel pump. Additionally, some owners find that the issue arises from not tightening the gas cap properly after topping off the tank, which can be resolved by securely tightening the cap and driving a few miles to burn off excess fuel. In certain cases, resetting the fuel gauge can fix the problem, particularly in models from 2001 and 2002. For further insights and maintenance tips, some owners recommend consulting Mercedes-Benz experts or user-reported problems. If these troubleshooting steps do not resolve the issue, it is advisable to seek assistance from a professional mechanic or an authorized Mercedes-Benz service center.