Question about 1999 Mercedes-Benz E-Class

1 Answer

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

Posted by on


1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert that got 5 achievements.

    Night Owl:

    An expert who has answered 10 or more questions between 12 midnight and 6am on the same day.


    An expert who has answered 20 questions.

  • Contributor
  • 26 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"


4 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

  • 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."

  • 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

Posted on Feb 27, 2010

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

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.

Sep 14, 2014 | 2005 Mercedes-Benz C240 Classic

1 Answer

Were is the engine fan relay or sensor for a mercedes 2002 e 320

unplug the car battery for 15 mm thin put in back on should work

Nov 16, 2013 | Mercedes-Benz Cars & Trucks

1 Answer

2002 Mercedes C320 very poor fuel economy ~8 mpg, no engine codes or faults present

Lead foot, tire pressures, stop /go driving. AC/poor compression, Trunk full of sandbags, transmission slipping, Wheel bearing friction, Brake shoe always on, etc.

Sep 08, 2017 | 2002 Mercedes-Benz C-Class

2 Answers

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.

May 07, 2011 | 2002 Mercedes-Benz C-Class

1 Answer

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.


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

1 Answer

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...

vbmenu_register("postmenu_46704", true);

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

3 Answers

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

Aug 03, 2009 | Mercedes-Benz C230 Cars & Trucks

1 Answer

Engine oil to service 2002 E-240


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

1 Answer

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.

Dec 27, 2008 | 2002 Saturn Sl

Not finding what you are looking for?
1999 Mercedes-Benz E-Class Logo

52 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mercedes-Benz Experts

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers


Level 3 Expert

80637 Answers

Joseph Prosser

Level 3 Expert

772 Answers

Are you a Mercedes-Benz Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides