I have performed most of the Flex B service myself. I took my 2003 c320 to a local repair shop to rotate the tires, and I also asked them to lube he thottle linkage as it is stated in the Flex B service. The service guy told me that there is no throttle linkage, the throttle is electronically controlled. This don't make sense. Can someone explain to me where the linkage is locted and how to lubriate it? I would greatly appreciate it.