This is slightly off-topic, but it's encouraging to see some discussion on the 140 coupes - I have a 94 S600 coupe with about 46k miles. Anyway, two questions for the group:
1) Has anyone attempted to replace that activated charcoal filter that's somewhat buried and costs over $300 for the part alone? I hardly ever press the switch to filter out bad smells, so not sure if this replacement is even worth bothering with.
2) Anybody had to replace their catalyctic converters? Mine seem to be corroding, altho the rest of the exhaust system looks fine. Is this a DIY job?