Any chance that you have changed your spark plugs? The CL type S has hidden the back three plugs. Does anyone have any recommendations to get these plugs out?

PS I have 110,000 miles on the original plugs. They are still in ok shape.

 

I would imagine they could be accessed from underneath the car...i never exmained mine yet so I really couldn't tell ya but i heard they are a pain to get to.