209 clk steering

[boltman]

Hi i have a 2006 clk the steering goes heavy from time to time but today it was so heavy i couldnt turn the wheel turned car of restarted and it was fine got it plugged into star and it said speed sensative steering solanoid i presume star cant be wrong as the part is £250 and i dont want to make a mistake so what im actualy asking is,is star 100% reliable many thanks for any replies