2004 C240 4-Matic
I just bought myself a black-on-black 2004 C240 4-Matic with 110k miles (mostly highway) and was wondering if you fellas had any advice/tips/suggestions for me when it comes to the car in general.
I'm also looking to buy a couple of things, but don't know where to look online?
-Tire bolts
-Tow cover (the plastic piece from the back bumper is missing, its a tiny plastic square)
-What kind of maintenance products would you recommend? (for leather conditioning, etc.)
Planning on tinting the windows, touch-screen in-dash dvd player, and eventually rims.
Would love to hear from some of the more MB-experienced guys as I do not have a ton of money to blow and it's my first Benz so I wanna make sure I get the most outta her ya know?
Thanks in advance!
Tow cover - your best bet would be Mercedes dealer. It shouldn't be that expensive.
Was the transmission fluid changed on that car? If not, I suggest you do it asap.
Also, transfer case fluid should be changed. Fuel Filter?
I also just recently purchased my C230 Coupe, and the first thing I did (and recommend you doing) is to go ahead and schedule a "B Service".
B Service
- Bumper to bumper inspection & Star Diag check -
- Oil & filter change
- Brake fluid flush/replace
- Transmission flush & filter
- Corrosion check
It's a good place to start because who knows where the previous owner left off maintaining the vehicle before deciding he/she was ready to sell it.

I also replaced all 4 tires.
Hope this helps.
Enjoy
Last edited by DNAC230; Oct 21, 2010 at 11:23 AM. Reason: typo
The B maintenance was actually just recently done on the car as per the previous owner (confirmed with MB garage).
For some reason the two wrenches on dashboard would still show up but that was because the person who performed the maintenance forgot to turn it off on the computer.
It's at a local MB place now getting a fresh oil change, interior cleaning and outside cleaning job, etc.
@pcy, does the B maintenance include everything you mentioned in your post?
Thanks again guys.
@pcy, thanks dude, I'm gonna get all that sorted then. Where do you recommend I go? Straight to Mercedes Benz or can that be done by any garage?
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I can't seem to find those lugs on either of the two websites...but I found a set (chrome) for $65 shipped off eBay - what do you think about that?
http://cgi.ebay.com/ebaymotors/TOW-E...ht_2267wt_1165
That's a ton cheaper than $70 at MB dealer.
I am surprised that autohaus and rmeuropean doesn't list lug bolts for your car. They are around $3 a piece. You'll need 20 of them. That's around $60. E-bay price is not far from that. So, that should be ok.
http://cgi.ebay.com/ebaymotors/TOW-E...ht_2267wt_1165
That's a ton cheaper than $70 at MB dealer.
I took each one out, sanded off the rust with a little sandpaper, and covered each one with silver touch-up paint from the local auto parts store.
Good as new.
PCY: What kind of transmission and transfer case fluid do you recommend?
I did the trans service myself. I didn't want to buy any other fluid trying to save few dollars on the fluid.
-What 3 top sites would you recommend for parts/fluid ordering for the MB?
-What exact model oil # should I order for my ride? (Tranny & Transfer case)
-Should I just go to the 'stealership' to get the tranny and transfer case oil drained/replaced? Cause it doesn't seem too easy with these cars.
Appreciate your support on this!
Transmission service (remove the drain plug, let the trans fluid drain, drop the pan, replace the trans filter, put back new filter, put back new pan gasket and tighten the pan, pour new trans fluid) can be done relatively easy. If you are not comfortable with this, take the car to a competent independent mechanic.
Trasnfer case fluid change requires the trans mount (also known as Engine Rear Mount) needs to be removed, disassemble part of the rear drive shaft, etc. So, definitely, I would suggest you have this done by MB dealer or a competent independent mechanic.
This is the stuff I'm looking at @ Autohausaz:
Genuine Mercedes OEM
ATF, Automatic Transmission Fluid; Lifetime Synthetic Transmission Fluid; 1 Liter Bottle
For the fuel filter, I found two:
Mann/Mahle-Knecht OEM
Fuel Filter; With 4 Push-On Fittings; 75mm Diameter
and
Bosch (Alternate Brand)
Fuel Filter; With 4 Push-On Fittings; 75mm Diameter
I assume Bosch is the way to go I may be wrong.
For the Fuel Filter, go with Bosch. (it's around $35). Fuel Filter is relatively easy to replace. Just getting those MB hose clamps are hard to remove. Buy a set of 4 screw type (stainless steel, if available) fuel hose clamps.
I noticed what I think is an abnormal sound/vibration that only happens when I'm on the highway coasting at 60-70mph. The strange thing is, it's ONLY when I'm coasting (aka barely touching the gas pedal, just keeping steady speed) - but when hit the gas a little harder (to speed up on the highway) - the vibration and noise seems to go away, or at least muffles itself a lot.
It's very noticeable (at least from drivers side) - more of a vibration than sound. It's almost like it has a pulse too because I can feel it get stronger every 3 secs or so.
I also keep hearing this squeaking sound when I go over even the smallest bumps (it starts after about 10-15 mins of driving in city) and I'm pretty certain its a noise coming from inside the car because I had someone drive the car slowly in circles around me while I would listen for noises - I did not hear a single thing outside, even though the person who was driving the car told me they were hearing the squeaking noise the entire time while driving the car.
So the noise MUST be coming from inside the vehicle, even though when you're inside, it SEEMS like the noise is coming from outside of the car!
It could be the shocks or suspension, because when I push down/rock the car on each side (front) I can hear the squeak coming from what I am assuming are the shocks? But again, like I mentioned earlier, I did not hear any noise when I was observing/listening to the car being driven.
Mind-boggling.
Any thoughts on this guys?
Last edited by Crna Mechka; Oct 30, 2010 at 09:34 AM.


