Mercedes-Benz GLS450 fuel gauge wiring damaged by rodent interference, issue recurred on Mercedes-Benz GLS450

Some Mercedes-Benz GLS450 owners report experiencing fuel gauge issues due to rodent interference with the wiring. These problems may arise from a faulty fuel level sensor, a damaged wiring harness connected to the sensor, or an issue with the instrument cluster. Owners are advised to start troubleshooting by locating the sending unit on the fuel tank and thoroughly inspecting the wiring for any signs of damage or interference. Additionally, checking for corroded or loose contacts on the wiring plugs is essential to prevent recurring issues. Some owners also consider the possibility of a faulty sending unit in the tank or a malfunctioning actuator at the fuel gauge on the dashboard as potential causes of the problem. Addressing these factors promptly can help prevent the issue from recurring in the future.