Two problems related to visibility have been reported for the 1999 Mercedes Benz SLK230. The most recently reported issues are listed below.
My 1999 mercedes slk 230 interior and driver's side mirror have discolored till they are almost impossible to use.
The lh side view mirror in my 1999 mercedes-benz slk 230 (r170 model) is an electro chromic self-dimming mirror that has no manual backup. The mirror contained a fluid which leaked out causing the self-dimming mirror to be smokey which you can now barely see out of and to fail to provide dimming against rear approaching headlights resulting in the driver to either be blinded or to have to turn the mirror away. There are many documented cases of these mirrors failing in various makes and models as a result of usually from the internal fluid leaking.