my oil life monitor first kick in att 4200kms the dealer said that it was normal that the first one is always early.
I waited till 4800kms to replace the oil, I went with dodge filter and mobil1 synt. the light came again at 8800kms... 100$ per oil change and only 4200kms thats ridiculus. could it be defective,....

 

Been posted before. Info on the oil monitoring light. Mine kicks on at 2500miles. but I do a lot of short trips.

http://www.moparmagazine.com/2009/ma...ing_light.html

The brains behind the oil change indicator system is the Powertrain Control Module (PCM). It processes a variety of inputs (hardwired and bussed inputs) to decide the oil change interval. The PCM then broadcasts this interval decision, via the vehicle bus communications system, to the driver through a message on the odometer or EVIC display in the instrument cluster (Figure 2).
There are six inputs used by the PCM. The factors which indicate severe use (and a shorter oil change interval) for each of these inputs are listed below:

• Ambient temperature – extended periods of low temperature operation
• Average vehicle speed – stop and go driving
• Engine run time – prolonged idling
• Trip length and coolant temperatures – short trips
• Engine speed and load – trailer tow usage
• Flex-fuel percentage – ethanol percentage of more than 60%

Based on this information, at a fixed number of miles since the last reset of the system, the PCM calculates the combined effects of these variables to determine if a severe usage pattern exists. If severe usage is determined, the oil change message is activated at 2,500 miles; otherwise, the message is not displayed until additional mileage has accumulated.
It should be noted that this system cannot keep track of dusty conditions or time elapsed since the last oil change (calendar time). In fact, it is possible for the maximum allowable maintenance time interval to elapse without an oil change reminder being displayed. In such a case, it is the responsibility of the owner to change the oil based on the recommended interval.

 

yes. but still 4000kms is fast.

 

Take it to the dealer and tell them the problem that you are having. Some trucks only make it about 2500 miles before the oil light comes on no matter how they are driven. My dealership reflashed my truck and fixed it for me.