Question about 2002 Mercedes-Benz M-Class

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Fixing of the control of the fan of my car.

Dear Sir, I need a manual to fix the control of the fans of my car. I have ML 320 2002. The two fans (maybe for the AC, the fans are faced to outside) are always run even the temperature of the motor drop down to ambiant. The Electrician said that the computer (small part of it) must be changed. I don't trust him. Did there a manual for this, or would you help me what is the truth of the problem? my email is Elias.Daoud@dargroup.com (work) or delie106@yahoo.com (personal) you can send to both.
Thank you.
Elias Daoud, Lebanon

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  • Mercedes-Benz Master
  • 2,011 Answers

If they are not shutting off then it could be a relay under the hood is bad. Change the fan and the air conditioning relay's.

Posted on May 07, 2017

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  • Contributor
  • 9 Answers

I am not a sir

Posted on May 07, 2017

6 Suggested Answers

6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
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Posted on Jan 02, 2017

  • 5 Answers

SOURCE: C220 - 1996

1. Mechanic needs to check cold start relay
2. Check switch, it is probably stuck
3. Panasonic CR 2032 3V
4. Mechanic needs to check IR security system

Posted on Jul 28, 2008

AnswerMan007
  • 39 Answers

SOURCE: only low fan speed on my mercedes c280 with climate control

You need to replace your blower resistor....

Posted on Jan 10, 2009

  • 43 Answers

SOURCE: air conditioning fan will not stop running

Hi, The fan assembly needs to be replaced.

Posted on Apr 28, 2009

  • 99 Answers

SOURCE: Engine Coolant Temperature Light came on

whats happening is your a/c is putting an extra load on the engine. it happens with any car. that generates extra heat. it is possible that you need your coolant topped off, but chances are that your car would have overheated before if that were the case. what i would recommend is to first check to see if the coolant level is good. if it is, then get the car up to operating temperature and check to see if the cooling fans on your radiator are working. if not, it may be a bad fan, or just a fuse or relay. if that doesnt solve your problem, have the thermostat changed out for a new one. theyre pretty inexpensive. second, if you or someone you know has the know-how, remove the radiator, plug the fittings for the transmission cooler if it has any, and use a power washer to clean the radiator out. sometimes dirt can accumilate there over time and it wont let the heat dissipate properly. a coolant flush wont be bad for your car, but probably wont make your problem go away.

Posted on Aug 03, 2009

  • 125 Answers

SOURCE: coolant fan on 2000 S430 Does not work ,but fan motor is good,

they don't run all the time only when the temp sensor tells them. is the car overheating?

Posted on Aug 17, 2009

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1 Answer

Why does fan keeps running on high speed very load


what fan? HVAC or engine fan. ? If engine fan..check temp sensor or engine is running hot. If HVAC fan , it is either the fan switch or resistor in the fan circuit.

Mar 11, 2015 | 2005 Mercedes-Benz ML 350

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Radiator installation on 2003 Kia Sorento


That is a VERY easy radiator.
Loosen radiator drain plug and drain coolant from radiator.
Disconnect cooling fan connectorsRemove upper and lower radiator hoses after marking them to ease installation.
For vehicles equipped with automatic transaxles, disconnect transmission cooler lines at transaxle.
Remove air conditioner condenser fixing bolts and radiator bracket fixing nuts.
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Reverse procedure to install.

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Apr 14, 2012 | 2003 Kia Sorento

1 Answer

Ac only gets cool when car is moving


Walk around front and make sure the electric fan kicks on when you turn on the air conditioning.
If the electric fan is not kicking on, the most common failure point is the relay. I have never worked on a fan on an e46, but a quick scan of the forums indicates that on this car, there is no relay but there is some sort of control box attached to the fan that turns on the fan based on a signal from the DME.
The complete fan with control box is very expensive, but one fellow reported fixing his electric fan problem with a new fan motor that he got on eBay.

Jun 12, 2011 | 1999 BMW 323 Series

1 Answer

My fans won't turn, my radiator is spurting and I want to change my radiator my self. What is your suggestion?


If the fans are frozen & won't move then you will need to replace them. However, if they are still capable of moving by you using your hand to just turn them, then you probably have a temperature sensor/fan relay issue. May I suggest that you first identify what is causing the problem before investing in any parts. Then, once you know if it is the fans or the sensor, you'll want to just pressure test the radiator & cooling system to see if there is any leakage. If you only replace the fans & the radiator without fixing another problem, you'll just have to start all over again. To check just the cooling system (from cold engine), fill up the radiator to where it should be, along with the overflow tank to the low line & put the cap back on & start the car long enough to see if there is a leak anywhere. If not, you only need to focus on fixing the problem with the fans. Generally this is the "cooling fan sensor" that mounts near the bottom of the radiator. Some models have the sensor near the thermostat housing, some on the top of the radiator, & some on the bottom of the radiator. A good Haynes manual for that specific car will save you time & trouble with just a simple 5.99 voltage tester.

Good Luck!

Jan 26, 2010 | 1991 Toyota Corolla

2 Answers

Heater only runs on high


Most likely caused by faulty blower fan speed control resistor module.
This unit is usually located in the heater air ducting under the dash ( in the blower fan airflow ) - unplug and remove fixing screws to replace.

Nov 16, 2009 | 1998 Toyota Camry

1 Answer

Rear climate control fans blowing cold


That sounds to me like your vent "tubing" is disconnected somewhere along the line. I am not sure exactly how it is set up in the vehicle you are driving, but I am certain fixing it will involve taking apart most all of your interior then putting it back together after a 10 minute fix.

Apr 13, 2009 | 1998 BMW 5 Series

1 Answer

What do these codes mean on 1994 Cadillac Eldorado -A012 and A047


Sound like you have a bad cv "constant velocity joint " REPLACE.

The first thing you need to do is to clear your old codes then drive

and see if they come back .

1. Re-enter back into the climate control panel and after all the codes display the display will stop at PCM?

2. Push and release the FAN UP (^) button on the climate control panel and you will see PCM DATA?

3. Keep pushing and releasing the FAN DOWN (v) button until you see PCM CLEAR CODES?

4. Push and release the FAN UP (^) button and you will see PCM CODES CLEAR?

5. Wait 5 seconds and then keep pushing the OFF button until you see PCM?

6. Push and release the FAN DOWN (v) button and you will see IPC?

7. Push and release the FAN UP (^) button on the climate control panel and you will see IPC DATA?

8. Keep pushing and releasing the FAN DOWN (v) button until you see IPC CLEAR CODES?

9. Push and release the FAN UP (^) button and you will see IPC CODES CLEAR?

10. Wait 5 seconds and then keep pushing the OFF button until you see PCM?

11. keep Pushing and releasing the FAN DOWN (v) button and you will see ACP?

12. Push and release the FAN UP (^) button on the climate control panel and you will see ACP DATA?

13. Keep pushing and releasing the FAN DOWN (v) button until you see ACP CLEAR CODES?

14.Push and release the FAN UP (^) button and you will see ACP CODES CLEAR?

15. Wait 5 seconds and then keep pushing the OFF button until you see PCM?

16. keep Pushing and releasing the FAN DOWN (v) button and you will see SIR?

17. Push and release the FAN UP (^) button on the climate control panel and you will see SIR DATA?

18. Keep pushing and releasing the FAN DOWN (v) button until you see SIR CLEAR CODES?

19. Push and release the FAN UP (^) button and you will see SIR CODES CLEAR?

20. Wait 5 seconds and then keep pushing the OFF button until you see PCM?


21. Push the AUTO button to get out of diagnostics.

22. Turn ignition OFF for 15 seconds.

23. Re-enter diagnostics and see if any history codes re-appear.



Mar 27, 2009 | 1994 Cadillac Eldorado

1 Answer

1992 Volvo 940 heater/AC fan will no longer blow anything out


could be a fuse they are located behind the ash tray. could be the fan motor you can test this by finding the connection for the fan motor and connecting a positive and negative wire to the positive and negative on the connector. it could also be a relay or loose or bad connector . start at the fuses check all of them. then check to see if your fan works then check all your connections if that is not it try to see if any of your relays look burned. im not sure whicjh one controls the fan controls. good luck if you need more help or specifics i will look into it more i have a friend with one of these vehicles that i can look at.

Dec 06, 2008 | 1992 Volvo 940

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