Mercedes S class 320Cdi Amg low miles

Mercedes Benz S320 Cdi Amg with only 129000 miles,been in storage for the last 2 years,huge spec including Harmon kardon music,electric and heated seats,sunroof,wood steering wheel,full immaculate grey leather and lots more,body is in perfect condition including 4 wheels refurbished and drives very well,Car has a problem with abs light on and stability light on,don’t know what the problem is hence price.