How to fix a 2000-2006 S500 Mercedes W220 AC Blower
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- เผยแพร่เมื่อ 22 ก.ย. 2015
- How to diagnose and fix the AC blower on a W220 Mercedes S500.
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Car Stereo Wiring Kit:
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Mercedes Benz AC Blower Regulator:
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Mercedes Benz AC Blower:
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Changing the AC blower regulator on a W220 Mercedes Benz, e500, s500, g500,ml500,
• How to fix a 2000-2006...
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Great video! Thank you so much! And very helpful on the tip to hold the 2 buttons to get the errors. I had codes 1451 through 1463. I ran some tests. The fuse was fine. So then I took the unit out and started with replacing the regulator. That worked. The blower worked fine. The blower was not seized so I reused it. So much knowledge on these cars which makes them a good buy for DIY folks. I got the same story, dealer wanted $1400. I paid $98 for that same regulator you have. I saved $1298. Thanks again.
Thank you for watching and subbing. Cheers
If only all diy vids were like this! Super helpful thank you! 👌🏽
@@dannydelgado2166 cheers
See this is the type of tutorial that keeps a car on the road instead of selling it for no reason, thank you!
Cheers
With this, the old S500 just keeps on going. Thanks.
Yep. I still have mine
Still going strong. Cheers
agree excellent video, so good i am going to attempt it myself. great job explaining how this all works. my guy wanted a $1000 to fix it. again thanks for taking the time to do this
Thank you!!!
Just finished installing the A/C blower resistor (regulator) on my 2004 CL500 and it worked.
Thank you for your the instructions.
So glad it worked out for you. Cheers.
Sam, I've got a 2001 with similar issues. Where exactly Is the location of the A/C blower regulator on my model?
Awesome awesome video, super informational. I’ve been having the same issue with my blower that just started acting up this week. Appreciate you, God bless!
Thank you.
Thanks my man! my mother in laws drain clogged and poured water inside, now the AC is on the fritz. Time to strip it down and diagnose
Aww man. Common issue with these cars. Make sure all is dry. Check fuses. Hopefully it didn't damage anything
@@PeterZafra fortunately all is dry. A year ago The trunk seal leaked and flooded the rear tire well and shorted the stereo which was causing a parasitic drain on the battery. Thankfully TH-cam saved me on that and dried it out. A month later found more standing water in the recessed floor where the main battery line runs to the front (only knew about it because the car wasn’t locking and had to check the fuses). Replaced the ecu and dried that out. Love learning about this stuff from guys like you and your TH-cam channels. Thank you! Got the blower out and about to order a replacement, super easy to remove.
I just want to say thank you for taking the time to post this tutorial.
Especially the part purchase info.
I also want to wish you a blessed day/ life🙏
Thank you. Blessings on blessings
@@PeterZafrall p0😊😊😊😊😊
Excellent advice and excellent fault finding skills, 😊.
Thank you!!!
Great explanation and tips. Exactly what I was looking for.
Thank you. Cheers
Thanks! I was able to diagnose my bad blower motor. Regulator was ok still ok. My regulator was pushing 12v even with fan on low, but with the new blower off eBay it works perfectly.
Glad to help. Cheers
Thank you very much
Just saved around 800
Was the fuze 33 👍👍👍👍👍👍👍👍👍👍
Sweet. I love it. Cheers.
Is that fuse under the hood
thanks man great video. youtube is awesome.
yes it is. thank you for viewing.
Thanks for the information I appreciate this video my brother
Thank you!!!
great video my blower went out last week hottest day of the summer I thought Parks Geeks was cheap 200. ordered one from eBay $68 three days later got it in colder than polar bear toes very nice video...lol
Iwill692 James awesome!!! Glad this video helped out!!!
Peter Zafra yes very helpful video I'm having some off and on issues with fuel pump relays any suggestions
Great video man. Great diagnosis ✊🏽✊🏽
Thank you. Cheers
great video...
thank you
Excellent video brother watching this reminds me of why Mercedes paid someone a million dollars for their car In hopes that more people will take their car to the dealership rather than watch a simple video.
Cheers
On the ac control panel where it says ac off the light was stuck until I reset it and it turned off then the ac made a noise like it was turning on but it still doesn’t throw cold air
I have the same car same year. My blower won’t blow no air just like yours I will start diagnosing thank you
Check that part out and also check the fuse for the regulator. Those were the issues on mine. You got this. Cheers
@@PeterZafra I will check those I will report back. Does harbor freight have the multi meter to check this stuff?
Very good video!!
Thank you!!!
I just work on my E240 here in Panama. Blower starts or not depending of it’s mood. Ordered a blower & regulator at Amazon for $88 brand new. I know my blower works but for the price I couldn’t resist. Only blower are around $40-$60. Regulator was $70 to $114 separate. So if my blower goes I still have a replacement part in the garage.
Awesome. Cheers.
Thanks my guy big time help!
Cheers. Glad to help
Very detailed information speak very well thank you for that information keep doing videos
Hi
I have s500 model 2001 w220 miles are 127000 with good serice recored. The only issue I am facing is ac blow cold from central vents and both driver passage and back sent vents through warm air. What can be the issue. I checked freon it’s good.
Can you help help in this.
Hey Guys, just an FYI, Fuse 33 sends a live positive directly to the blower regulator then from there, the fan gets fed from the regulator. Thanks for watching.
Peter Zafra
Hi i have e240 mercesdes .. my problem is blower motor AC not working sometimes or if I want to degrees can speed blower fan off and if high degree back working again.. so is the regulator bad ? Thanks
I have a 2003 s430. Where can I locate the fuse 33. Great video btw.
My 2004 s430 4matic a/c will blow at times sometime it doesn't I think its the blower because I can feel cold air but its not blowing is it the blower or resistor plz help me thank you
Wish Bone it might be your fuse holder being melted. I've had the same issue. I hope it isn't but you might want to check it. It can be your blower resistor as well but check the fuse first. Cheers
Thanks for the video!
Glad it helped. Cheers
Helped me with my cl55 too bro thank
Cheers
Good video need to do more like this
Thank you. Cheers
Peter hi, great video step by step instructions. Really appreciate you taking the time to show us. My MB is an S430, and my AC Blower isn't blowing. I've replaced the blower, the regulator (bought online, also got a cheap set from the JY that didn't work either). Reset the computer as per another site after replacing the blower. Replaced fuses 33, 4, and 7 as different websites were conflicting - I had extras already so it was no issue. Still nothing - blower isn't blowing. Any ideas my friend?
Make sure that there's full voltage going into the regulator. I posted a video on a melted fuse housing. Search my videos on melted fuse for ac and check. These model years are known for that to fail. Let me know what happens. Cheers.
The link is in the description of this video.
great video and advice .......
Thank you!!!
Thanks!
Thank you!!!
nice ... thnx
Thank you!!!
Good Information!
Thank you for the video. My 06 S55 the blower doesn’t come on. I volt test and I’m not getting any power on the din connector from the instrument panel to the regulator? Check fuse are ok. But can’t get any volts from the panel going to the regulator ? No red light I replaced the compress and is holed the charger but a week later the blower stop working. I ordered a regulator and a blower to install but when I tested the den connectors I’m not getting any power from the panel? So I’m guessing that means I have a bad climate control panel? Any advice would be helpful thank you
Check the actual fuse holder under the hood. fuse holder on the front passenger side engine compartment. I made a video on it because the actual fuse holder melted and wasn't making good connection. Pretty bad design. That solved it for me. Hope it works.
@@PeterZafra thank you very much. I can’t find the video on the fuse you are talking about? I check the #33 fuse under the hood pass side and the fuses looked good. I’m not sure what you mean by the actuator?
Thank you for the great video....Do you happen to have the part number for the part you replace? Thanks
Please give me your email address and I will send it to you. I have the picture that shows all the details. Cheers
Hi there does this go for if the heat is not blowing also right? the blower works for air and heat? Thank you in advance so much!
Yes.
Would this possibly cause my AC to fail intermittently? I have a 2005 s55 AMG. Front air only.
OverDrivenTV yes. It can cause your dual climate to malfunction. Very common problem
Peter Zafra Thank for getting back to me. This is a great video. AC has been working for 2 days now... But now my sunroof stopped working. Lol. You activate the sunroof button an it opens about an inch an stops. You close it an it closes but then pops up.
So I have the exact same issue, head unit works, fuse is good, blower motor spins when 12V applied. I checked the voltage coming out of head unit to the regulator and got a positive 12V across the thick gauge wire and got 2V to 6V on the smaller gauge wire (to ground) when I ran the fan from lowest to highest setting. Output from the regulator was 0. Output from a replacement new regulator was 0. Can you tell tell me what the full input range was to the regulator depending on fan setting? My guess is that the head unit isn't putting out a high enough control voltage to the MOSFET. Also, I've got an S600 "AMG" (2005) with the rear control and my harness only had three wires, just like yours. I should add that the rear control works just fine, so in my case, I believe there is an additional MOSFET regulator in the center console. Lastly it also intermittent. Mostly non-functional, but occasionally it will come on. Oh and ZERO diagnostic codes in the HVAC computer. - UPDATE: I found a shop manual page and the correct output voltage from the head unit ranges from 0-6V providing a 0-12V regulated output, so at least the head unit seems ok.
Hmmm. If you haven't yet, check the fuse and make sure that it isn't melted. Passenger side in the engine bay. If it's melted, chances, are, there's not enough current passing thru
@@PeterZafra thanks for the tip. I checked the fuse from the top (plastic window just fell out) and the metal looked like it was heat stressed, but the fuse itself was wedged in there pretty good and I didn't want to break it taking it out. I suppose that may be indicative of a melted box, or fuse, which didn't occur to me at the time (I did this before seeing your video). I'll try and yank it out and update here with what I find.
I just replaced my regulator on my 2004 s430 4matic,second time I did this results were worked for a couple days,stop working got in car yesterday and it was working now today not working but I notice when I'm driving and gas the car I feel cool air coming thru the vents but not blowing what can that be .....thanks
Check out my video on a melted fuse for the blower. This could be your issue as it became mine after doing the regulator change. Let me know if your fuse housing
is melted. This was a known issue for these years.
Or... the blowers pull too much amperage through the variable resistor frying it...
Or... the blowers pull too much amperage through the variable resistor frying it...
This is awesome info!! Would this be the same for a 2004 S430? Mine comes and goes both A/C and heat are fine but the fan just shuts off for awhile then turns back on full blast whenever it wants to. After watching your video I am inclined to think it’s the blower module rather than the fan itself. Also if you think that’s the route I should take, what is the part number I need to replace mine? Thanks so much, Jonathan
Thank you for watching and subbing. The best thing to do is punch in your car model and year on the browser and confirm with the seller regarding your vin number to make sure it works. Also, you might want to check fuse 33 on the engine compartment on the passenger side to make sure that its not melted. I encountered that problem with mine after replacing the regulator. You can search my video on that was well. Melted fuse housing w220. Hope that helps. Cheers.
Thanks for replying! I dont see any evidence on fuse 33 of overheating or a "melting" so I'll probably move forward with the regulator. The issue comes and goes. Heat or AC. But then you said the same in this vid that the fuse checked out good. But then 3,000 miles later you were doing the fuse mod video. Guess I'll find out in a few months. Thanks again for your help!
Having the same issue with blower coming on for 10 seconds then off and cycling. My friends cat and he said he's replaced the motor and regulator already. I tested the old regulator and it shows 195 ohms between positive and pin 3 so I think this regulator is good. Did you finally fix your issue?
Great vid .... Thanks !
Thank you!!!
Ok I did everything that you did. I found that I wasn't getting power from the climate control unit so I bought one and bought a new resistor like yours there. A.c. still doesn't want to come on. A.c. system is charged. AC compressor is working cause ac line is cold. Blower motor works. Hooked it to a 12 volt source. Any ideas?
Check the fuse. These models had a melting fuse problem. I actually made a video about it because it happened to my car as well. Let me know what you find out
@@PeterZafra fuses are all good. I dont know which fuse it is? But I did check them all. From both sides under hood an the ones on passenger side of the dash and under passenger side rear seat. Could it be a melted wire from climate control to regulator?
@@PeterZafra I finally was able to find the bad fuse. All fuses did look good and also tested good. However what I found was the fuse holder underneath the fuse for the ac was bad. Fuse was still good but what I couldn't see under it was bad. Ac has been working fine since. I did pull that fuse and bypassed it all together.
Hi, can you buy after market parts for this job if they match up to the pats you pull out, thanks P
You can but....I would be very careful. I would go with oem as much as possible.
Ok, thanks P
Hello, so I have a 2000 s50 box is w220 and my battery keeps getting drained then completely flat so I have to buy a new one. I noticed that when I would turn off my car and take out the key, the blower for the back two seat kept making noises, could that be the issue of my battery drain?
Yes. Definitely could be a big cause. Your regulator could have an open circuit causing the blower not to shut off. Have it diagnosed. It should be the issue.
Peter Zafra dang your reply time is AMAZING! And yeah it only blows hot air and won’t shut off after I press the power button
Peter Zafra does a specialist need to check it or can any general mechanic check it? The specialist in Puerto Rico is charging me $225 just to check one module and I don’t really want to or can pay that much
Sorry for the late reply. Wow that's a lot but sometimes you just gotta bite the bullet to find out what's really going on but I do have a feeling that it's your module because one of the wires that connects to it is a live 12 volt coming from the fuse box. If it stays on open circuit, then it will drain your battery.
Thanks for your great video! i have to replace my temperature sensor (error 1229) and i saw your video and i guess you told that wire left of blower is where it connect, am i right? help me please! best regards
Filipe Pereira hey Filipe. I'm not sure what problem you have. please look into the Mercedes forums for extra help.
Peter Zafra thank you very much for your reply! my problem is that my ACC don't blow hot air on front center console, just in side vents and rear vents! I check up my ACC and show me error 1229 so I search on the web and found that it is from climate temperature sensor!
+Filipe Pereira let me know if you find the fix. I would love to know what the solution was.thanks for watching
+Filipe Pereira that's awesome. I hope you fixed the problem.
I have just diagnosed my car and I am not getting any power to the din connector that comes from the command unit. Could the climate control module be faulty? Why would the connector be dead? Any help would be appreciated.
+Benny Palma the din from the center console that connects to the regulator? It's suppose to register around 4 plus volts. It's more of a relayed power to signal the regulator to feed the motor.
When I went in to test it I didn't get any readings. When you probe this unit with the multimeter are you supposed to connect the black lead to the brown ground wire and the red lead to the red/yellow wire to test for power? I think I may have tested wrong and didn't get any power from the din.
Benny Palma yes. Brown is a ground. red yellow is a live wire. It could read 12 volts but it could have low current causing no power to the blower.
Benny Palma make sure to watch my video on the melted fuse
I have. My fuses look good to go and have a solid 13v going through when the car is on. I'll go back and check the power connector tomorrow making sure I do it correctly. I'll keep you posted. Thank you for getting back to me.
That red ac light is when you turn off the compressor so you just vent air
Yep
Thanks
Cheers.
thank you so much,,, really challenging figuring this out,,, had your address I'd send case of your fav beer!!!
Just saw this. Thank you kindly.
Good video thanks from Holland
Hi dear, I have a 2004 CL500, how do I reset the AC system, I seen that red light is lit on the AC button?
When the red light is on, that means the ac is off. If you click that button, the ac button red light should go away. If it's flashing, then there's a problem with your ac. Hope that helps.
@@PeterZafra thank you so very much.
my 2000 s500 benze the blower went out i replaced the climate controll and blower module still no blower i put duwalt 14 v battery to the blower works so im going to buy pass it next.. tge blower has alot of calcium deposit i tried every thing on your video
please help
Juan Gonzalez what was the outcome? I'm going through the same thing my ac stopped blowing but when i put power directly to the blower it works I ordered a regulator and still not working I think they sent me a bad 1
Nice sharing my friend
A/c light on. Error codes: 1256,1453,1455,1463. What are these?
My 2006 S500 keeps blowing the 78 fuse. Any thoughts? Anyone? Subscribed...
It could be the steering column motor
I need a reference on where you got the oem part.made i. Germany.
On this one, i bought it on ebay. Not 100% sure if it was OEM but it did say Behr on it and everything matched.
Mine works when it wants to work like it will work one week and the next it won’t work can you explain this I had a error code 1000 what is that
I'm not sure what error code 1000 is but you might want to check your fuse for that regulator. I actually made a video on it as well. Mine was melted so at times it worked and at times it didn't. I've dealt with this one too mant times. Hope you get it fixed. Cheers
You could also have a bad regulator which is what this video is but check the fuse and make sure it isn't melted.
What if it doesn’t give you a code it just says diagnostic error when you hold the rest button
Im not sure what that would be. An error usually means that its not abke to read the actual error.
The DYI going ok ?
Alexpmgr8 K3 yes. still going strong
Where is the fuse for the blower I have a s430 2003
Fuse 33 in the engine bay
Thanks for the great video. My blower comes on and off intermittently. I know the compressor is working because I can feel the cool air (static) when I put my hand on the vent. Its just the blower is not throwing that cool air into the cabin. Is it safe to say that it is the regulator or blower?
It could be your regulator. Try to leave the fan on the second level and see if it still comes out intermittently. If it does, it might be the regulator. You also might want to watch my other video (link in description regarding melted fuse). That became an issue for mine as well. Let me know how it goes cheers.
Since the blower does come on (80% of the time), is it safe to assume that the the fuse is good? I mean if the fuse was bad, the blower would never come on. Is that correct?
@@bhasins mine was doing the same as yours and now doesn't come on at all. I replaced regulator and climate control and still doesn't work. Did you fix yours?
@@RCChoppercx2 I soon realized that if I tapped the blower unit really hard, it would come back on. That told me that it was definitely the blower motor. I took it out and cleaned it with compressed air. It started to work but then it started to crap out again after a week. I just ordered an aftermarket blower from eBay and it's been working fine ever since. If you have replaced the regulator and controls, the blower is the only thing left which could be bad. Go ahead and change it out. It's not super expensive $80-90 from eBay. Good luck!
Sumit Bhasin I'm not getting power coming from the connection with the 3 wires that plugs into regulator. However I do get power out of the back of climate control unit... I have hooked a 12 volt source to the blower motor and it comes on. I think the issue is in between climate control an regulator. Haven't had a chance to try to test the 0hms.
My will blower will not start sometime, if I hit under the dash with my hand where the blower is it will start working
Check connections first. Might be loose.
Fuse 33 is the motor fan
thanks
Where is it located please
Jerome Mims dude box in the hood on passenger side
did you notice the regulator gets real hot?
hi. sorry for the late reply. the regulator Shouldn't be getting hot. I just had a fail on mine and I found that my fuse was the problem. it had melted and caused my regulator to stop working properly due to high resistance. check fuse 33 located on the passenger side of the engine bay. 40 amp orange fuse. good luck.
2 screws are giving you a hard time????
HA!. Yup
Are located in New York
No.
BTW is was aftermarket
Thank you!!!
But my heat isn't working
My error code was 1257
I think you need refrigerant with that code. You might want to bring that in to a n ac shop
Wrong wrong wrong you are not a technician