Reset service light on international truck

https://hnctruckparts.com/service-info/37-how-to-reset-the-service-interval-oil-change-light-with-maxxforce-engines

Try this site.

HNC Medium And Heavy Duty Truck Parts Online ' How to ...

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How to Reset the Service Interval (Oil Change) Light with MaxxForce Engines. Set park ... If you are entering an International Truck part number, do not enter any ...

You will find some simple instructions here, about how to do it manualy.
How to reset oil manualy : Cummins Signature ISX and QSX15 Factory Manual Repair Servic Download...

REMOVE AND REINSTALL the red lead from the battery terminal. This will reset the internal codes, if it persist then your in need of oil service, OR, YOUR OIL filter needs to be changed, or oil filter HAS BECOME LOOSE during normal operation and lack of the last repair guy to install it completely!!

there are more then 1 o2 sensor find out if is a upstream or downstream sensor before installing remove the battery cable this will reset the computer

The Service engine light means you should check all the fluids(anti-freeze, oil) It May also signal problems internal to the engine. Auto Zone will run a free computer check if there is one near you. They usually will help check fluids as well.

Many of the newer model vehicles must have the service engine light cleared with a scan tool. Most auto parts stores will hook up a scan tool and reset the computer at no cost.

did the sevice light come on before you serviced it? when you "serviced" it I assume you changed the oil and now need the service light reset.
I bought the 1998 S70. it got time to change the oil. Being how I am I changed the oil myself. I had to call dealership about resetting the service light.
they said $29.96.
I said 29.95?!!! how much if YOU would have changed my oil and reset the light?
they said $29.95.
so I learned you need to access the OBDII to reset the light.after service. hope this helps.

resetting service now light after oil change on 2005 Porsche Cayenne

I would check to be sure you do not have an internal short with in the alternator or accessory relay.