Question about Mercedes-Benz C230

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Why does my 2004 mercedes c230 make rattling noise when it's idling

When i'm at a stop, the rattling noise comes on when the car is idling. Does anyone know why it's doing this?

Posted by Anonymous on

5 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 15 Answers

SOURCE: 2004 Mercedes C230 Kompressor coupe

try the door module. get the one from the driver side and try it on the passenger side . most common problem on mercedes

Posted on Feb 11, 2009

bunnydawg
  • 5158 Answers

SOURCE: spare key for c230 mercedes benz

does it have a chip in the key ? if not any locksmith can make you one

Posted on Feb 23, 2009

emissionwiz
  • 75814 Answers

SOURCE: Mercedes-Benz Transmission Fluid question

the transmission on your MB is sealed with no way to check the trans fluid level,(no dipstick provided for) that is why the report says "sealed". MB did this to stop customers from overfilling there transmissions, which can cause severe damage if not done properly at the correct fluid temp, this requires special test scan tools.

Posted on Mar 30, 2009

  • 1 Answer

SOURCE: can't open a 2002 Mercedes c230 kompressor sun roof

It's typically the motors or the special drive tubes that it uses. If you here a clicking noise then the sunroof became to tight and ruined the motor gears. You can actually switch the two motors, one is for the shades and needs less power then the other motor. They are identical, switch them. Nex make sure they are very tight to the 3 mounting bolts, there is a rubber washer bushing that wears out and alloys the motor to flex too much, causing the gear mis-alignment and gear grinding. This works great I do it all the time.

Posted on Jun 05, 2009

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When I first start my truck I can hear a loud rattling sound coming from the back. Hear this sound also when I am in idle. Don't notice it when I pick up speed.


Check to see if one of your brackets holding the exhaust pipe has come loose. That'll make a rattling sound - especially if it towards the end by the tailpipe. When you're accelerating - more air is forced thru your exhaust at a faster rate, so it's not moving as much as when you're sitting still and the truck is just at an idle with less air/exhaust moving thru the tailpipe. If it's only making the noise while the truck is stationary & the noise stops one the truck is moving - that pretty much rules out anything to do withe the drive-train or suspension. You are sure the noise is from the back & not coming from under the hood? If under the hood - check your oil level ASAP.

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