Most Mercedes vehicles introduced after the 2000 model year incorporate a combination jack point which can be used with either the vehicle jack or the dealer service department lift. The vehicle jack is designed to fit into the pocket of the jack point. The service department lift typically makes contact with the rim around the pocket of the jack point. Older Mercedes models have jack points under the chassis for the service lift and separate jack points for the vehicle jack which are accessed through covers in the side skirts.
On cars with the standard body side skirts, the jack points typically extend slightly below the side skirts. The side skirts on cars with AMG body kits normally hang below the jack points making these cars even more of a challenge for DIY mechanics. Most floor jacks cannot be used directly with the jack points along the side skirts without risking some damage to either the undercarriage, the side skirts, or the jack point itself.
The Jack Pad Tool leverages the small notch in either end of the jack point pocket in most Mercedes vehicles introduced after 2000. The spring loaded bullet latches in the ends of the Jack Pad Tool block are positioned to snap into these notches and temporarily suspend the Jack Pad Tool while a floor jack can be positioned beneath the jack point.
The Jack Pad Tool separates the side skirts and undercarriage vehicle parts from the floor jack head to eliminate damage to the vehicle from the floor jack while still providing enough ground clearance to position the floor jack.
Mercedes uses a few different jack point part numbers across almost its entire model range. Part number 203-997-01-86 is for the W203 C-Class, W209 CLK, W211 E-Class, W219 CLS, and the front of the R171 SLK. Part number 171-998-00-50 is only used on the rear of the R171 SLK. Part number 221-998-00-50 is for the W221 S-Class, W216 CL, W251 R-Class, W164 M-Class and the X164 GL-Class. Part number 164-690-05-09 is an upgraded jack point that replaces the W221 part. Part number 000-998-67-50 is used in the new W204 C-Class, W207 E-Class Coupe, and W212 E-Class Sedan.
The dimensions for the various jack point parts are sufficiently different that Reverse Logic Limited offers separate model Jack Pad Tools for the W203, W221, and W204 jack points. The W203 Jack Pad Tool will fit into the front jack point of the R171 SLK and the W221 Jack Pad Tool will fit into the rear jack point of the R171. The R171 Jack Pad Tool will work in both the front and rear jack points of the R171 SLK.
The attached photos show the W204 Jack Pad Tool, a W221 jack point, a mangled R171 rear jack point, and a W203 Jack Pad Tool being used in a W211 jack point. The mangled R171 jack point was damaged by using a floor jack directly on the jack point. More information about the jack pad tools is available at www.ReverseLogic.us