What does a spanner sign with - 5 mean on the dash of a Mercedes C240?

A spanner sign with a "-5" on the dashboard of a Mercedes C240 typically indicates that the vehicle is due for a service or maintenance check, specifically referring to a reduction of 5,000 kilometers or miles until the next service is due. The spanner symbol is a reminder for routine maintenance tasks, which may include oil changes, filter replacements, or other inspections. It’s important to follow the manufacturer's recommended service intervals to ensure the vehicle remains in optimal condition.