I am contemplating changing the spark plugs myself can anybody tell me the procedure and how complex it is ... also I am planning on changing the in cabin air filter, where is it located and how complicated it is ??

 

Sorry, but I've never performed either of these. However, the plug replacement probably depends on which engine you have: E320, E420, E430, or E55 (there may be others).

I'd like to know how to change the cabin air filter too, but I can tell you this: The dealer replaced mine at 120,000 during a routine "B" service. I don't know if this is an every 20k thing, or if they just saw that it was dirty. I bought mine with 117k and have a pretty sketchly service history on it, so I know very little else.

There are a lot of DIY (do it yourselfers) on this forum, so I'll bet you'll eventually get a good answer.

Hope this is of some value,
M

 

The primary cabin air filters are located behind the glove compartment. You must remove the necessary screws and give the box a good yank to get it out. The filters are behind a small door that you'll see once the glove box is out.

The activated charcoal filter is under the dash, also on the passenger side.

 

I just took my car in today for the 90k mile service. Changing the plugs myself a few weeks before saved me 300 bucks. Defenitely worth it. I dont know about the cabin filter, I know its under the glove box because the mechanic left a few grease smudges under there.

 

Flatline... It looks like you have a '96 E320. How easy/hard is it to replace spark plugs? Can you give us step-by-step instructions? with pictures would be great. Thanks