Umm - depends on where you get your information. I take WK2 Jeeps info as pretty much gospel.
I posted this in the Jeep service costs thread relating to a post by Bob T commenting on his service indicator……
"Pretty sure that CJD vehicles in Australia have the most severe service schedule anywhere in the world - and its not because of the conditions they operate in!
Just went to WK2Jeeps where I should have gone in the first place….no info relating to the diesel - but this for the petrol……and a little note that says for export vehicles the indicator system is disabled - it wasn't on our 2012!
From WK2Jeeps -
"Schedules A and B have long been a part of required and recommended maintenance on Chrysler Group vehicles. One drawback of using these schedules is that customers sometimes end up making a best "guesstimate" of the correct maintenance interval.
With the introduction of the Oil Change Indicator system, that's going to change - customers are automatically notified via the cluster or EVIC that an oil change is required. In addition, the system does away with Schedules A and B and instead combines both into easy-to-use lists and tables.
The Oil Change Indicator system uses the Powertrain Control Module to process a variety of inputs and then decides on an oil change interval. The factors which point toward severe use include the following:
Ambient temperature inputs which indicate extended periods of low temperature operation
Average vehicle speeds which indicate stop-and-go driving
Run time which indicates prolonged idling
Trip lengths and coolant temperatures which indicate short trips
Engine RPM and engine loads which indicate trailer tow usage
Fuel indications of an ethanol percentage of 60 percent or greater
The system cannot keep track of dusty conditions or time elapsed since the last maintenance. In fact, it is possible for the maximum allowable maintenance time interval to elapse without an oil change reminder. In such a case, it is the owner's responsibility to ensure that maintenance is performed according to the recommended interval.
Based on the inputs, at a fixed number of miles since the last reset, the Powertrain Control Module decides on the severity of the operating conditions. If one or more of the conditions indicates severe use, the PCM sends a message over the bus so that the appropriate message can be displayed. If the PCM decides that the normal service interval applies, it waits until additional mileage has accumulated before sending out the request for a message."