Question about 1999 Mercedes-Benz E-Class

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My Mercedes E 240 model 2002 engine fan stop working and i have change the fan motor and still problem when i reset the sensor it is working after some times stop again please help

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  • 23 Answers

Sometimes it a weak relay for fan

Posted on Nov 22, 2013

Testimonial: "yes it is and when temperature over 80 showing on the screen check engine fan"

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Posted on Jan 02, 2017

jasperoni
  • 203 Answers

SOURCE: How To Change Oxygen Sensors in 2002 Mercedes C240 Sedan?

I do not know the part numbers but you have 4 sensors. 2 pre and 2 post catalytic converter. The pre sensors are the most sensitive and are generally the ones to fail. the rear sensors usually have a heater circuit problem. If your just replacing them for routine service interval I would just do the fronts. They connect to the engine wire harness in the front of the transmission pan. You may need an o2 sensor socket to remove the fronts. They are just a 22mm. in size.

Posted on Oct 18, 2009

Testimonial: "Thank you for the reply...I appreciate your time! Will replace front O2 sensors and see if check engine light goes out...thanks again...Jamie."

johnjohn2
  • 5763 Answers

SOURCE: Mercedes c180 2002 model

Well the first thing i would do is scan the computer for codes,but without a scan reader you cant. see if it has fuel preasure,start there.

Posted on Feb 26, 2010

  • 10 Answers

SOURCE: 1989 mercedes 190e blower motor and vents not working properly

Probably two separate problems.
For the blower motor, it may be that the bearings are getting old and so the motor is getting harder to turn and overheating. A way to check is to take the motor out (it will be tucked in behind the glovebox. Pour a tablespoon of motor oil into the vents next to the shaft and work it back and forth to loosen it up. Then put the motor back in and try it. If I'm right, the motor will work normally again. However, this is only temporary--once the oil gets worn off the bearings in a while it will start quitting again. You should order a replacement before it blows your resistor block or (in the worst case) starts a fire. You can get them online, like from autopartswarehouse.com

Posted on Feb 27, 2010

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1 Answer

On the Mercedes C-240 the oil sencor light came on with the A service oil change .I had the oil changed and now the oil level light comes on. And this is on a 2005 C-240 4-matic .


Could be the person who changed it never ran the motor and then topped it off once the filter was full. Have you checked the oil level after you let the car sit overnight to make sure the oil level is on full? I would say it could be a bad oil level sensor, except that the coincidence of coinciding with an oil change is too obvious.

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The electric fan in my 2002 C240 runs constantly even when the engine is cold, the sensor has no problems. Could be the engine temperature sensor? What else could I check? Thanks


It must be the coolant temperature sensor or the fan relay. The relay is located in the relay box under the hood. I can't say exactly where on that car.

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Merc 240 windscreen wiper stopped working 1999 model is it the motor and how much will it cost please


Call the dealer for a quote. Then call a local IMPORT used parts/wrecking yard to see how much a used wiper motor is. Most mechanics will install a lot cheaper than the dealer.

Sorry, but i don't know how hard it is to change out this part.

GL,
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Jan 12, 2011 | 1999 Mercedes-Benz C-Class

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How can I test a Mercedes 2002 C240 Cooling fan on the bench?


Connect 2 wires to fan plug, w/ other end of wires touch to battery terminals (disconnect battery to make sure you don't accidentally touch the wires together while doing this, as you can damage the electrical system). When you touch to the batt. terminals, the fan should kick on. If it doesn't, the fan motor is shot, if it does turn on, it is a relay that is bad, not signaling the fan to turn on when it should (as engine temp goes up).

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I have a Mercedes car 240 c. The brake wear warning came up on the instrument cluster. I have got changed the brake pads which were worn out. How can I reset the warning signal still appearing on the...


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The pad wear warning shouldn't have to be reset. It will only illuminate if it actively sees the sensor circuit grounding out. If the all the pads/sensors have been replaced properly, it should automatically disappear.

Maybe it's possible there's another problem. Fluid level is ok? No air in the system? All the sensor wires are routed properly? user_offline.gif quote.gif

Feb 19, 2010 | 2002 Mercedes-Benz C-Class

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Hi, do I need to change the timing belt on c 240, year 2002


Do not change the timing chain until its loosened / stretched to the limit. You should check & replace the engine oil and gear oil(if separate). Also get the air filter & engine oil filter replaced. See if the tyres are worn out otherwise exchange the tyres diagonally. A good servicing including greasing should be enough...................sodeep

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Engine oil to service 2002 E-240


CHECK THE OWNERS MANUAL. LOOK FOR SERVICE AND MAINTENANCE.

May 08, 2009 | 2002 Mercedes-Benz E-Class

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Overheating on stop and go traffic


I had the same problem on my SL1 2002 and my wifes SL2 2001. In both cases, the electric radiator fan motor needed replacing. It was not difficult but took me a full day of trying to figure out how to pull the plastic housing it is mounted in. Someone who knows what they are doing could have changed it in a half hour. Works great now.

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