Buddy of mine brought his '98 E300 over for an oil change a year ago in trade for some computer work I needed. His had the outlines of a compartment under the main headlamps that my '99 doesn't, and would indicate some sort of headlamp cleaning system. His interior had the optional leather door panels - real fancy. Didn't notice the type of headlamps nor question him about the washers. A doctor in Chicago gave it to his daughter. It only had 80K miles on it, but it was a maintenance and appearance POS. What a piece of used and abused piece of crap that '98 E300 had endured in Chicago!

Hope this helps....

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'06 E320 CDI
'17 Corvette Stingray Vert