I went to buy a Mitsubishi Outlander DI-D GX 4 last night from a garage and when I turned it on the yellow engine light was on. It was steady and orange and not flashing .They are taking it to a local garage to get it sorted before I buy it. Is this anything to worry about. The car didn't have service history records for the last 3 years, could the light be an indication it hasn't been serviced?

Thanks

Mark