EC light on. no air con

[lewss]

Hi all,

My E240 yr2000 air con, sometimes blow warm air ( center vent, left side vent only), I need to turn the temp analog dial knob in order to chase away the warm air. Sometimes there is no cold air in all the vents.

There were 800 over pages on this topic. How can I　ｓｅａｒｃｈ　ｔｈｅ　ｒｅｌａｔｅｄ　ｔｏｐｉｃ　ｔｏ　Ｗ２１０　Ｅ２４０　ａｉｒ－ｃｏｎ　ｐｒｏｂｌｅｍｓ？

Ｍａｎｙ　ｔｈａｎｋｓ！

 

[television]

Hi all,

My E240 yr2000 air con, sometimes blow warm air ( center vent, left side vent only), I need to turn the temp analog dial knob in order to chase away the warm air. Sometimes there is no cold air in all the vents.

There were 800 over pages on this topic. How can I　ｓｅａｒｃｈ　ｔｈｅ　ｒｅｌａｔｅｄ　ｔｏｐｉｃ　ｔｏ　Ｗ２１０　Ｅ２４０　ａｉｒ－ｃｏｎ　ｐｒｏｂｌｅｍｓ？

Ｍａｎｙ　ｔｈａｎｋｓ！

The main 2 center vents always blow cold air, the 2 end vents are adjustable from hot to cold, is your outlet in the foot wells hot or cold for if always hot then the duo valve could be stuck

 

[neil brolly]

c180 radiator light on and fan will not turn of

can anyone please help i have a 1998 mercedes c180 and the radiator light is on and the fan will not turn of i do no these are connected some how , does anyone have any ideas.

 

[barch]

W210 E290 ECON light on constant

I took my car into Mercedes. They said the fault was with the clutch on the compressor. I'm taking the car next week to have this repair but I'm a little worried that this wont fix it. I had the system regassed, but the compressor never kicked in and, fortunately the guy just took the gas out again and didnt charge. I'm thinking maybe to get a temp sensor and have this fitted as well. I do think the clutch is cattled on the compressor, but I wont be happy if this doesnt completely cure the issue.

 

[barch]

Got the following error codes.
226 to 234, 459 and 241.

Are there always so many? There is definitely an issue with the clutch on the compressor, so I'm hoping tis means that everything else is a result of this

 

[jj1975]

For models 129,140, 202, 210, 215, 220, 463 Up to the 15-08-99


If you have the EC light on all of the time on the above cars, the cure is to replace the temperature sensor.

This sensor for the refrigerant leaks moisture so that incorrect values are transfered to the control module and air con is turned off.

Replace sensor.

hello
where that sensor is placed on model 202 thank's

 

[television]

hello
where that sensor is placed on model 202 thank's

Its 77

 

[jefrs]

Hi, I have no cold air on "LO".
Car is S210 98 E320 with dual climate.

No fault codes to be had from the LCD.
The EC is not lit up.
The compressor clutch is not kicking in.

Any ideas?
tia.

 

[jefrs]

Update - sorted

Cause was no gas in system although leak tested for 20 minutes ok, and a wire off under the compressor, which explains why the clutch was not kicking in in the first place. Presumably one of those small leaks that requires the compressor rotating to seal up.

 

[nipper]

Hi All!
I've been reading some of your post with interest! I don't know if this would be of any of help to anyone?? I have a 1999 W220 which had the EC light on, after having it regased at Mercedes and them still not solving the EC light on they said they would need it for a few days, at £80:00 per hour to solve the problem as it could be a number of things and will have to be checked through, as you can guess this did not happen, I found this so hope it helps!

OK.

Sensor Data.
First we’ll get the values of all the various climate control sensors. These sensors constantly monitor data like air temperature, refrigerant pressure, etc. Odds are if something’s wrong, a sensor will pick it up. Let’s get started!
• Start your car.*
• Press the “AUTO” button on your climate control.*
• Turn on the A/C (i.e. “EC” light must be off; if the light won’t shut off, continue with this test. We’ll address your “EC” light on the next page.)*
• Let the car idle for about 3 minutes.*
• Set the temperature on each side to 72°F. You can do this quickly by pressing both the red and blue arrows simultaneously.*
• Press and hold the “REST” button for five seconds or until the left side of the display says “01.” The left side indicates which sensor you’re checking. In this case, #1 is the in-car temperature sensor. The right side of the display shows the value of sensor #1 (in this case, the actual in-car temperature).*
• Press the “AUTO” button on the left side to move to the next sensor. Press the “AUTO” button on the right side to move to the previous sensor.*
• Record the ID number of each sensor (left side of display) and its corresponding value (right side of display). For example, in the picture on the right, you would record that sensor #5 has a value of 6.*
o You only need to do this for sensors #1-8. You can write down the values for the other sensors, but they’re not really related to air conditioning function.
When you are done, press the “REST” button again to exit the self-check mode.

Sensor codes.
01 In-car temperature sensor.*
02 Outside temperature sensor.*
03 Heater core temp, left.*
04 Heater core temp, right.*
05 Evaporator temperature sensor.*
06 Engine coolant temperature.*
07 Regrigerant pressure in bar (e.g. '4' is 4 bar).*
08 Refrigerant temperature.*
09 Not used.*
10 Heater blower control voltage (normal 08-6.0, meaning .8 to 6 volts).*
11 Emissions sensor voltage (to detect atmospheric gases and recirculate interior air).*
12 Sun sensor voltage (to shift airflow in car).*
20 Control current for auxilliary fan (electric fan on radiator, given in milliamps or mA).*
21 Engine speed (x100).*
22 Road speed (km/h or mph depending on installation).*
23 Battery voltage at terminal 58d (as a percentage of total voltage, e.g. 99.0 = 99%).*
24 Battery voltage (e.g. 12.8 = 12.8V).*
40 Climate control software version.*
41 Climate control hardware version



Malfunction codes.
Now that we have all the sensor values, let’s check the computer for malfunction codes. Read this carefully, because you have a 20 second window after switching on the ignition to load the trouble code display mode.
• Ignition must be switched on. 20 second timer starts.*
• Increase the left side temperature (left red arrow) until left side says “HI.”*
• Decrease the right side temperature (right cold arrow) until right side says “LO.”*
• If your 20 seconds passed, switch off the ignition and switch it back on. Your HI/LO settings will be preset. Timer restarts.*
• Press and hold the “EC” and “REST” buttons simultaneously for at least five seconds.*
• The screen will go blank.*
• Load the first code by pressing the right side “AUTO” button.*
• If you have any error codes in memory, the screen should look like the figure on the right. The ‘E’ stands for “error.” In this case, we have error code B1234.*
• Write down each error code. To cycle through the codes, press the right side “AUTO” button.*
• When you finish, press the “REST” button to exit.*

Deleting the fault codes.
Service Procedure:
1. Read and clear DTCs in the A/C control module using a push-button on-board procedure. Turn the key to the ignition “ON” position.
2. Set the left temperature selector on “HI” and the right temperature selector on “LO.”
3. Within 10 seconds, press and hold the “REST” and “EC” buttons simultaneously for six seconds, then release.
4. The Light Emitting Diode (LED) in the recirculation button should begin to blink. The display should read “di A.”
5. Press the right “Auto” button to display DTCs. Keep scrolling through the list by pressing the right “Auto” button until the display shows “E FF.”
6. To erase DTCs, press and hold both “Auto” buttons simultaneously for three seconds and release. The display should show “D FF.” Switch off the ignition.
7. Restart the engine. If the “EC” button lamp is illuminated, press and release the “EC” button. The lamp should go out. If not, recheck for DTCs Key On Engine Off (KOEO), then recheck compressor operation.



The following are where I found the fault codes listed relating to the Air Con.

Body
B1000 HRA Headlamp range adjustment: Supply voltage of the control unit is too low (under voltage)
B1004 LCP Lower Control Panel: Control unit does not match vehicle type
B1056 Automatic Air Conditioning: Problem in CAN communication with control unit DCM-RL
B1201 Electric seat adjustment front left: Hall sensor front height*
M27m3
B1213 If seat memory installed: ext left rearview mirror voltage faulty
B1214 If seat memory installed: ext right rearview mirror voltage faulty
B1226 In-car temperature sensor (B10/4)
B1227 Outside temperature indicator temp sensor (014)
B1128 Heater core temperature (B10/1)
B1229 Heater core temperature (B10/1)
B1230 Evaporator temperature sensor (B10/6)
B1231 ECT sensor (B11/4)
B1232 Refrigerant pressure sensor (B12)
B1233 Refrigerant temperature sensor (B12/1)
B1234 Sun sensor (B32)
B1235 Emissions sensor (B31)
B1241 Refrigerant Fill
B1246 PTS Parktronic: A42b1 (left outer sensor, front bumper) The plug connection has poor contact or is loose, or the sensor or cable is faulty
B1310 Left/Window airbag sensor is defective
B1315 Problem in Front passenger child seat recognition
B1416 Coolant circulation pump (M13)
B1417 Duovalve (Y21y1), left
B1418 Devolve (Y21y2), right
B1419 Electromagnetic clutch (A9k1)
B1420 Idle speed increase
B1421 Pulse module (N05)
B1422 Series interface (K1) connection to instrument cluster (A1)
B1423 Switchover valve block (Y11)
B1424 Activated charcoal filler actuator (A32m2) open
B1425 Activated charcoal filler actuator (A32m2) closed
B1432 Non-USA DTC
B1459 Series interface (K2) connection to instrument cluster (A1)
B1462 Wide open throttle (WOT) position signal diesel engines
B1476 Airbag malfunction indicator and warning lamp is defective
B1481 HRA: Part E2m1 (Right headlamp range adjustment motor) has short to ground
B1489 HRA: Part E2m1 (Right headlamp range adjustment motor) has open or short to positive
B1492 HRA: Part E1m1 (Left headlamp range adjustement motor) has*
short to positive
B1617 Part E19/1 (Left license plate lamp) is defective
B1618 Part E19/2 (Right license plate lamp) is defective
B1628 Part E2e5 (Turn signal lamp) in module E2 (Right front headlamp unit) is defective.
B1703 Intermittent No Start in AAM Immobiliser Module
B1729 PSE Pneumatic system doorlock Control Module A37
B1736 Navigation system's CD Player: Check General CD, Check CD data block, Flimsy CD data*
B1768 Faulty open data flap limit switch (0025) Front flap
B1773 HRA: Zero position programming has not yet been carried out or is not possible
B1850 Electric seat adjustment front right: CAN communication interrupted with DCM
le Security Control Module

Hope someone may find this useful.

 

[television]

Thanks they should find it use full, I also have the details for some other cars the same test

 

[moscowexpat]

MB 2000 (W) S320 Petrol

Last week the heater fan/blower stopped working. I replaced it yesterday but now the A/C on/off red light is on all the time........any ideas please????

 

[television]

Unless you knocked a wire off a sensor it is hard to say what went wrong, it mat need STAR to say what happened

 

[rose5691]

I have a 230 and my Eco light goes on and off if I press it. No cooling though so would that indicate a faulty compressor or no gas?...or something else?

 

[rose5691]

Is there a test to see if the compressor turns on? Is it always on or can you hear when it "kicks in"?

 

[rose5691]

Took the plunge today and got a mobile aircon chap over- fantastic service. He did a vacuum check to se if there were any leaks and the computer said "no". So his machine automatically filled it with oil and gas. Started the engine and instant cool air down to 3 degrees! This was after 5 years of no aircon. Best £49 spent for a while.

 

[rose5691]

Sadly it lasted a day but the nice chap came back with his ultra violet torch and saw evidence of a deceased condenser. £280 fitted and regassed for a new one this Wednesday!

 

[Mercedes-2010]

You would trust your car with quick fit!!!!

We had one in today knocking and banging! double the pressure in the system!! Good old quick fit!

Buy one, get one free at Kwick Pi55

 

[rose5691]

The nice air con chap returned as promised and replaced the condenser this morning. Lovely day to test it
Can't speak highly enough of the excellent service they provided.

 

[rose5691]

All lovely and cool in the car today so all good in my SLK world!
Next thing on my list is the rear screen demister.