air filter replacement 2005 c320

[starfire394]

I want to replace the air filters on a 2005 c320. What is the procedure for removeing the engine cover? I called the dealership, but the service manager says he doesn't know. I don't want to break any slips or take off parts I don't need to.

[Ethan]

I want to know the same thing.

On my W203 C240 the front portion of the engine cover snaps off, this is the portion that surrounds the oil filter, it is about twelve or so inches deep.
Starting on the driver side push up and work your way to the passenger side.

I did notice that the twin air intakes over the radiator are connected to the housing that covers the intake runners, but I could not figure how this piece is removed.
I may try www.startekinfo.com

[Ethan]

did some research at www.mbklasse.com and this is how they said it is done.

The front smaller cover snaps up and off.

The larger rear portion is held in by four screws. if you look at the four corners of the larger cover piece you'll see the round molded stems in which the screws are screwed in from the bottom.

I am going to use a mirror and verify, plus verify screw head type, in a few weeks.

[starfire394]

Ethan, thanks. The screw size and type on the cover screws are 25 torx.
However, if you look closely towards the inside of the cover you will notice more screws. I have no way of telling at this point if the inner screws are to be removed also, that looks impossible. My conclusion at this point is that the whole top engine cover snaps up, but I'm still not sure. I can't find anyone who has taken the cover off to change the filters. Let me know if you find out anything more.

[Ethan]

The whole engine cover snaps off.

Lift up the front piece, pull up from the front to release. It will stay hinged to the larger engine cover.

Pull the two tubes out from the cover housing. ( these two tubes also pull away at the the crossbar over the radiator.

To lift the large cover, it is beat to stand on the side of the car, and pull up with a quick jolt. Step around to the other side to release that side the same way.

The two air filter elements are accessed by removing the screws on the underside of the cover.

To replace large cover, add a bit of rubber protectant ( lube ) to the rubber balls on the engine that the cover snaps onto.

First, press fit the cover onto the mass airflow tube, it is important for that to be secure. The bring down the rest and snap down.

Refit the air tubes.