Mercedes-Benz ML320 fuel gauge malfunction with inaccurate readings after fill-up on Mercedes-Benz ML320

Some Mercedes-Benz ML320 owners report experiencing fuel gauge malfunctions that result in inaccurate readings after refueling. Common issues include the need for a fuel gauge reset, which some users have resolved by pulling a specific fuse, such as fuse 5. Others have attempted to address the problem through software reloads performed by a Mercedes dealer. Additionally, ensuring the gas cap is tightened properly can help prevent inaccurate gauge readings. The fuel sending unit, mounted with the fuel pump assembly, may also be a culprit behind erratic gauge behavior. Furthermore, some owners find that electrical issues within the vehicle's system can lead to fuel gauge malfunctions, necessitating professional diagnosis and repair. It is advisable for affected owners to consider these potential causes and solutions to effectively address the issue.