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A spanner: a scheduled service is due, not a fault.
Also known as: Service light, Wrench symbol, Spanner on the dashboard
An outline spanner, sometimes with a distance or a date. It counts down to a service interval and reports nothing about the vehicle's condition, which makes it the least alarming lamp on the dashboard.
An amber tell-tale shaped like a spanner, indicating that a scheduled service interval has been reached.
What this lamp means on a particular vehicle, and what to do about it, is in that vehicle's handbook. The symbol names the system; it does not diagnose the fault.
Contexts: Vehicle dashboard
Driven by mileage or elapsed time rather than by any measurement of the vehicle, so it appears on a car in perfect condition and does not appear on one that needs attention.
The outline of an open-ended spanner set at an angle, sometimes above a small numeral.