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A/C fan speed regulator replacement on 2000 E320 with pictures

73K views 66 replies 40 participants last post by  Guppy123  
#1 ·
After mentally preparing myself to repair/replace the A/C fan speed regulator, reviewing the excellent threads on the matter, I removed the blower assembly and to my amazement found out the blower/regulator is completely different to the pre MY 2000 vehicles. I was thrilled to see there was no soldering at all but merely a bolt-on/plug & play part replacement.

I proceeded to call the dealer who quoted $270 for the part. Checked some of the online resellers and ordered it from Autohaus AZ for just under $148. Very satisfied with their service.

I enclose pictures from the parts. The removal procedure has already been posted and the steps to follow do not change and start by removing the glovebox.

Cheers.
 

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#3 ·
skorny - 4/11/2006 6:17 PM

If you remove the panel below the glove box, a couple of screws and the cover to the blower from below, another couple of screws, you don't even have to remove the glove box. I did the whole deal in less than one hour.
You're absolutely right. I did an exploratory disassembly and cleanup first that included checking the cabin air filters, and charcoal filters too.

Cheers.
 
#8 ·
the '98 job is just as easy

only the parts are different, there is an excelllent DIY write up for working on a '98 at MBworld, can't miss it and the job is easy, and yes the blower regulator and fan speed is the same thing, just different wording.
 
#10 ·
Can anyone tell me how to get the glovebox out, it seems to be stuck to/glued to the wood trim line. I've pulled the front screws, the two in the floor of the glovebox, and the two door stops. Is there a screw in with the light? I think I loosened one in there, by touch.
Still the glovebox wants to take the whole dash with it, including the airbag part of te dash. HELP!
Thanks!
 
#13 ·
No need to get glovebox out



If you're doing just the blower regulator, the access is directly from the footwell area removing the two screws. I mentioned removal of glovebox on tutorial because I did the air filters at the same time.

To remove the glovebox I grab it from its door, close to the hinge. The I pull upwards, like an arch, if you look from the side.

Hope it helps.
 
#14 ·
You don't need to take out the glove box. The blower motor and regulator are accessible from beneath the glovebox. Just loosen the screws down there and you have full access.
 
#15 · (Edited)
I have a '98e320 wagon w/ the old style regulator(not like the new one pictured at the beginning of this thread). I purchased the part from all european auto supply for $236+shipping. Their part # is 2108219951. It is KAE brand (3.701.420 is on the box). Looks exactly like roring's part from his repair(the last picture) on the MB world.org website with the plug from the original harness. Got it today and installed it in about 20 minutes(had removed blower earlier in the week) Doesn't get much easier than this and no soldering/splicing required. Blows like a champ.
http://www.mbworld.org/forums/e-cla...kers-imports/153918-early-w210-blower-motor-regulator-replacement-diy-here.html
 
#16 ·
I have a '98e320 wagon w/ the old style regulator(not like the new one pictured at the beginning of this thread). I purchased the part from all european auto supply for $236+shipping. Their part # is 2108219951. It is KAE brand (3.701.420 is on the box). Looks exactly like Tony's part from his repair on the MB world.org website but with the plug from the original harness. Got it today and installed it in about 20 minutes(had removed blower earlier in the week) Doesn't get much easier than this and no soldering/splicing required. Blows like a champ.
That's interesting. Where was it made? I've never heard of the brand.
 
#22 ·
This looks pretty easy, but I have another question. Our problem is that the fan stays on after we remove the key, thus draining the battery. It does this about half the time, so we have to fix this quickly. We thought we would try the instructions on this site (E320, 2000), but we also called the Mercedes dealer and a couple of Mercedes repair places. They all say we also have to replace the blower in addition to the regulator. What are they talking about! They said it will cost between $800 and $1000. Any help appreciated.
 
#23 ·
In case anyone is interested, I just found that w140 regulator on Ebay Motors parts and accessories for $88, including shipping. The part number matches the Kaehler regulator from AutoHausz, which now appears to sell for $170. If it works, it saves me nearly a hundred bucks.

Of course I'm cheap...I've been driving an E300TD for ten years!
 
#27 ·
I'm with Matt L.

There is nothing wrong with being cheap, but I will never buy a critical part from Ebay. However marketed when the price is "that good" it's invariably a knock-off from China. In the MAF world they fail all the time right out of the box, so I'd not trust the blower regulator either.

I'm not sure that a blower motor regulator is critical, but I also don't like doing things twice. I have yet to have a problem with any part purchased from autohausaz.com, so if/when I face this issue they'll get my business again. ;)

Take care and enjoy the ride,
Greg
 
#29 ·
If it shows up in that blue Kaehler box (good) or if I see any packaging in Chinese (bad) perhaps it will be of interest.

Thanks again for the warning...we shall see...
Actually the Chinese are very adept at violating copyright law and duplicating packaging, so you can ignore the box.

If only they were that adept at copying the parts IN the box. ;)

Good luck, let us know how it goes.