My Accord Exec Tourer, 2.4, Auto late 2007 car with about 37.5k miles on the clock makes a slight "Doink or Clonk" after starting to reverse. I can only hear this when the cd/radio is turned off. Please let me know if I should be concerned about this - maybe a loose suspension/steering bolt or something? Any ideas, or should I take the car to the dealer to get is checked? Any help greatly appreciated. Many thanks.