Also I just checked the relay (the blue one ) to find that the 15amp fuse inside it was blown. Getting a 15 amp replacement right now to see if the aux will come on.
Now i gotta get the clutch fan fixed so it dont go above 80
Exactly!! I can't believe what a difference a new fan clutch makes!! I am sorry that I didn't do it a year or so ago... you'll be amazed at the temp difference.
__________________
2000 C230K -- Desert Silver Metallic
2002 ML320 -- Alabaster White
1991 300CE -- Blue Black Metallic -- 129,000 miles -- Sold
1981 300SD -- Classic White -- 190,000 miles -- Sold
1977 240D -- Over 300k miles (Wrecked) -- My 1st car
2005 Porsche Cayenne S - Dad's
2004 Porsche 911 Turbo S
When connected directly to the battery both my aux fans starts to spin, I never suspected the fault to be both auxfan motors, but good to rule out
I have read a lot about similiar problems but to me it seems like everybody with this problems has the two relays with the fuses on, one controlling the low speed and the ohter the high speed setting.
In my car though, there is a metallic or silver looking relay that according to this site: Your Parts Search Returned 5 Part(s) (look at the 3:rd relay from top) controlls the aux fan in some models. I also have a fan control module under the plastic cover in the driverside wheel arch.
Is this configuration unusual to the C200 W202 and how exactly is the fans controlled in this configuration? Does the relay have any role in this?
I am going to try to disconnect the coolant temp sensor tomorrow and then give an update in the forum.
I have now attempted to get the fans going by disconnecting the temp sensor from the termostathouse, but the fans did not come to life.
I have attatched some images, one is of the control module inside the driver-side wheel arch the other is the relay I think could control the fans and the third is the aux fans themselves.
I have now attempted to get the fans going by disconnecting the temp sensor from the termostathouse, but the fans did not come to life.
I have attatched some images, one is of the control module inside the driver-side wheel arch the other is the relay I think could control the fans and the third is the aux fans themselves.
did u try disconnecting the temperature sensor to see if the fans come on??
Mines working now too. The fuse fixed it. as soon as the thermostat hits 100 the aux fan kicks in. knowck it back down to 90.
Now i gotta get the clutch fan fixed so it dont go above 80
First of all funny as sh*t, your thread title is...
Second, "Mines"? I thought you had to be four years old to use that word.
My laugh of the day so far...for the record is that correct or should it only be mine is? Got to know.
Almost forgot, what did you do before the fans went out, and from the looks of your pictures you should get some electrical cleaning spray and clean all of your connections and check as many as you can. And since your bay looks so dusty and dirty I would check ohter things that could be affected by the debris. Might not be the tool, but the wires to the tool too!
__________________ Stereotypes are never 100% false!
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did u try disconnecting the temperature sensor to see if the fans come on??
I did try to disconnect the temp sensor but the fans did not come on. I have now checked all the relays I had in the relaybox.
The relays had the following part numbers and I checked them on this mercpart-site to understand what they controll.
1. A 2028204626 CONTROL UNIT BLINKER/HAZARD-WARNG.-L.SENDER UNITS, HEATED REAR PANE,WIPER,TRAILER COUPL. (PARTSCATALOG.RU nr. 119)
2. A 0015426519 RELAY RETURN FLOW PUMP (PARTSCATALOG.RU nr. 119)
3. A 0015429919 RELAY TWO-TONE HORN (PARTSCATALOG.RU nr. 119)
4. A 2025420232 CONTROL DEVICE Replaces №: A 2025420532 (PARTSCATALOG.RU nr. 114)
5. A 0015420219 HEADLAMP WIPER / WASHER, BURGLARY ALARM SYSTEM , IMMOBILIZER (PARTSCATALOG.RU nr. 119)
So it seems a bit like there are'nt any relays controlling the aux fans, there is also the series resistor (have'nt really found on my car yet, have'nt been looking to hard either) that according to the site has something to do with the aux fans (A 0001583945 SERIES RESISTOR AUXILIARY FAN; PARTSCATALOG.RU nr. 262)
The device found in the wheelarch is according to the site: A 0165459632 CONTROL UNIT ADDITIONAL FAN (PARTSCATALOG.RU nr. 264)
I have not bought any electric cleaning spray yet, will have to do that and also really check all the cables.
I did try to disconnect the temp sensor but the fans did not come on. I have now checked all the relays I had in the relaybox.
The relays had the following part numbers and I checked them on this mercpart-site to understand what they controll.
1. A 2028204626 CONTROL UNIT BLINKER/HAZARD-WARNG.-L.SENDER UNITS, HEATED REAR PANE,WIPER,TRAILER COUPL. (PARTSCATALOG.RU nr. 119)
2. A 0015426519 RELAY RETURN FLOW PUMP (PARTSCATALOG.RU nr. 119)
3. A 0015429919 RELAY TWO-TONE HORN (PARTSCATALOG.RU nr. 119)
4. A 2025420232 CONTROL DEVICE Replaces №: A 2025420532 (PARTSCATALOG.RU nr. 114)
5. A 0015420219 HEADLAMP WIPER / WASHER, BURGLARY ALARM SYSTEM , IMMOBILIZER (PARTSCATALOG.RU nr. 119)
So it seems a bit like there are'nt any relays controlling the aux fans, there is also the series resistor (have'nt really found on my car yet, have'nt been looking to hard either) that according to the site has something to do with the aux fans (A 0001583945 SERIES RESISTOR AUXILIARY FAN; PARTSCATALOG.RU nr. 262)
The device found in the wheelarch is according to the site: A 0165459632 CONTROL UNIT ADDITIONAL FAN (PARTSCATALOG.RU nr. 264)
I have not bought any electric cleaning spray yet, will have to do that and also really check all the cables.
check the diagram on page 1. see whats goin one with yours i have a c220 and mine matches exactly with the diagram the 1st poster put up there.
So u know, when I disconnected the sensor (the one on the driver side under the plastic benz logo right above the water pully, my fans came on. but later i came to find out anyway that my relay 1 fuse was blown anyway. i dont know if it was the level 2 fan that came on, but i CAN tell u both them things was turning, and it was loud as hell, even though my relay fuse 1 ws blown. i dont know what wouldve happened if relay 2 fuse was blown as well. the fuse sits right inside of the relay as described in the link. it was a 15amp. i replaced it with 25. problem solved.
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