Without knowing how many miles are on your 2007 Suzuki Xl-7, it's difficult to tell you what would be required at this time.
The best suggestion is to follow the schedule for required maintenance in your car's owner's manual. If you don't have one, you can view a copy here:
Information on required maintenance can be found beginning at page 228, with mileage intervals on page 231. For additional assistance, please find an AskPatty Certified Repair Shop at http://www.askpatty.com/search/?type=all&m=30&q=&keyword= and they can help you diagnose your vehicle's needs.