KIA Motors review: abs systen

I had buy the Naza Kia Sorento year made 2006. The problem is ABS system is not function probably or better than the cheaper than car. The celle node inside the ABS system is cannot pump the oil to the break system. I use the car not more 4 year, and before this effect, my mileage is 16000 km...I had check at service center and, they told me, my ABS system is not function probably. But, how can my car below that mileage can had a problem...maybe this problem is not bigger, but the safety is priority of this car...I had told the service center, I don't want to pay this problem...I hope you can help me...
Muhammad Mahdzan
Miri, Sarawak, Malaysia
email: [protected]@yahoo.com