All field notes
The standard service interval is a distance. It is a reasonable proxy in a temperate climate and a poor one here, where a vehicle idling with the air conditioning at full load in forty-eight degrees accumulates engine hours, heat cycles and oil degradation while the odometer barely moves.
48°C a Doha afternoon, at which idle hours matter more than distance
Hours, heat, and distance are three clocks
FMS tracks all three because they disagree, and the disagreement is the information. A delivery van doing short urban runs and a long-haul unit on the Salwa Road can reach the same odometer reading in states that are nothing alike.
- Distance drives tyres, brakes and suspension.
- Engine hours drive oil, filters and belts — and idling counts.
- Heat exposure drives coolant, battery and everything rubber.
The point of a due date is that somebody sees it
A maintenance module that stores service records is an archive. One that puts "due in the next fourteen days" in front of the person who books the workshop, filtered to the vehicles they are responsible for, is a schedule.
That is why servicing has its own screen in FMS rather than a tab inside the vehicle list. The question "which vehicles need work next month" is asked by a different person, on a different day, than "tell me about this vehicle".