Perform Service light came on and I dont have a Owners Manual . What kind of service it might need?

Usually means just an oil change. All other services are determined by the manual as far as transmission, transfer case and differential service intervals.

If you press and hold (at least 3 seconds) the button (overhead) that you use to change what is displayed overhead it should reset the perform service reminder.

What exactly does the light look like? If it is a picture of the engine (check engine light) you may have a problem with the car. If it is a light that specificaly says "Service Engine Soon" or "Maintance Required", you may not need to do anything. Some cars, not many, have a service reminder light that comes on when ever a service is due like an oil change. When a mechanic does an oil change, they may reset this counter and after 3000 miles or so, the light comes on despite what ever conditions the oil is in, whether it needs to be changed or not, the light will come on and stay on. Now i dont want to tell you to ignore your light and later find out it was trying to tell you something was wrong. Look in your owners manual and find the description of the light. If you cannot find the description or do not have your owners manual, let us know and we will try and help you again. Hope this helps

Use the owners manual and it will tell you what services are needed according to the vehicles milage.

YOU HAVE TO LOOK IN OWNERS MANUAL OR FACTORY MANUAL IN GLOVE COMPARTMENT.IT WILL TELL YOU WHAT TYPE TRANSMISSION YOUR VECHICLE USE.IF YOU DONT HAVE A OWNERS MANUAL YOU CAN CALL MITSUBISHI SERVICE DEPARTMENT.THEY WILL LOOK IT UP AND TELL YOU.

It means it's time for service---- to change engine oil -- check air filter and various maintence stuff--- if you have the owners manual it will show you what service to perfoam and to log it in the service book.
Also has intructions in the owners manual as to how to reset the service warning light-- kind of tricky but once you get it it's pretty simple.

one way is too remove both battery grounds for 3 minutes then restart it if that dont keep it off then you need a code tool to reset the ECM

Its telling you, according to a preset schedule, your vehicle is due for service. You might have already preformed needed services such as an oil change, but the computer was never reset. Your owners manual will specifically explain what to do and when to do it.

Follow the owners manual!! Im unsure cause i dont know the size motoror what kind of tranny you have!! If you dont not have the owners manual then i would call your local Auto Zone and ask them! If they play stupid then call the dealership and ask for service!! I promise they wont take you out back and shoot you!! I have to call them all the time for questions!!