The alarm you’re seeing is the car’s way of telling you that it’s been working hard and needs attention sooner rather than later. The on-board computer will be monitoring all sorts of parameters including the engine oil level and condition and the state of the air-filter element. Either of those things (and a large number of others) could be the trigger for the alarm you’re seeing. But it could also be due to the transmission being heated to a point where the computer says enough, or even an actual problem somewhere in the driveline such as a low coolant level.

The best thing to do is have the vehicle serviced as per its own request. The workshop might be able to tell you the cause of the alarm, but either way, maintenance is due. Towing a caravan places a lot of extra stress on the engine and transmission, while hot and dusty conditions also take their mechanical toll.

Thanks John. While nobody likes visiting a dealer for warranty repairs, it looks like Holden is looking after you. No doubt this will instil confidence for anyone else with a similar issue.