Cooling fans seem to be running all the time [SOLVED - radiator fan control module]

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gavnator
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Cooling fans seem to be running all the time [SOLVED - radiator fan control module]

Postby gavnator » Tue Jan 30, 2018 1:42 pm

I noticed the other day when I pulled my 06' M35X out of the garage the cooling fans were running which I thought odd but blew it off. Same thing today; start car up and the cooling fans are running. Pulled the car in the garage today after being out and the fans were running. Sat in car for over 5 minutes assuming the fans would cycle off once temperature drop. The fans keep running. The temp gauge isn't even near the half way point. Any thoughts??
Last edited by EdBwoy on Sat Feb 03, 2018 11:05 am, edited 1 time in total.
Reason: Update with solution


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Re: Cooling fans seem to be running all the time

Postby Ilya » Tue Jan 30, 2018 4:08 pm

Maybe fan relay is on the fritz? Not quite sure as I've never experienced this on any car I've had.

midnightclub619
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Re: Cooling fans seem to be running all the time

Postby midnightclub619 » Tue Jan 30, 2018 4:13 pm

I had this same problem. The Radiator would turn on first thing in the morning and stay on. I looked it up and its a fail safe when the Radiator Fan Control Module is ready to be replaced. The module is no longer telling when the fan to turn off/on anymore so it just bypasses the module and the fans stay on. I found a replacement on Amazon and did the swap and haven't had any issues since. Here is the part # Beck Arnley 203-0276

https://www.amazon.com/BECKARNLEY-203-0 ... y+203-0276

The swap itself was easy. Only 3 bolts (10mm I believe) that hold the module to the radiator and two connectors. took maybe 15 mins to replace.

Hope that helps

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Re: Cooling fans seem to be running all the time

Postby gavnator » Tue Jan 30, 2018 5:03 pm

Thanks for the quick reply guys. midnight can you identify exactly were this module is located, how I get at it or snap a pic. If it took only 15 minutes to replace Ill assume its easy to get at without a lot of disassembly. Thanks Again :dblthumb:

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Re: Cooling fans seem to be running all the time

Postby midnightclub619 » Tue Jan 30, 2018 5:18 pm

Gav - Unfortunately, I didn't take a pic but just by looking at the module and taking a look at your radiator you'll definitely see the module. It's easy to spot and very easy to get at. the only disassembly is the fan module itself. A quick google search you can see how it looks

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Re: Cooling fans seem to be running all the time

Postby gavnator » Wed Jan 31, 2018 12:35 pm

midnight this module is located somewhere on the fan shroud. Correct? Just ordered the part on Amazon

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Re: Cooling fans seem to be running all the time

Postby midnightclub619 » Wed Jan 31, 2018 12:43 pm

Gav - yes, thats correct. something like this

https://img.go-parts.com/catalog/brand/ ... B4C5-1.jpg

But you will have 2 connectors plugged in. they might give you a little hard time to remove. Apply some pressure and those connectors will come off.

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Re: Cooling fans seem to be running all the time

Postby gavnator » Wed Jan 31, 2018 4:24 pm

Midnight thanks. The pic helps. I assume that once I take the plastic top radiator cover off that's bolted on the module will be exposed. Its bolts that fasten the module to the bracket; not screws correct.

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Re: Cooling fans seem to be running all the time

Postby midnightclub619 » Wed Jan 31, 2018 5:06 pm

Yes. I believe thats an air duct for the stock MAF. But yes, once you remove that you'll see it bolted to the cooling fans. I believe they were 3 x 10mm bolts.

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Re: Cooling fans seem to be running all the time

Postby midnightclub619 » Wed Jan 31, 2018 5:08 pm

gav - i'll try to take a pic tonight to give you a better idea

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Re: Cooling fans seem to be running all the time

Postby gavnator » Wed Jan 31, 2018 6:16 pm

Tkx midnight; appreciate your help. :dblthumb:

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Re: Cooling fans seem to be running all the time

Postby gavnator » Thu Feb 01, 2018 2:39 pm

Hey Midnight I found the module. pretty much in the open. You said you were able to release the connectors from the module applying pressure. It looks like there are release buttons/tabs on the connectors? YES? Replacement module will be delivered tomorrow. Just turned 87,000 on the clock today.

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Re: Cooling fans seem to be running all the time

Postby ae7456t » Fri Feb 02, 2018 7:26 am

Midnight is right on...I had the same issue with fans running continuously. Ordered the replacement fan control module...Removed that portion of the air intake above the radiator...Remove the 2 bolts...Remove the 3 wire harnesses...Reinstall the same way. One of the more straightforward repairs I have had.

Incidentally, this is a known issue with these years/model...To the point where Infiniti issued a Voluntary Campaign to replace the defective modules, so if you are so inclined, you should be able to get them to pay for it. High level details of the campaign are...

Reference: ITB08-036

Date: August 7, 2008

VOLUNTARY SERVICE CAMPAIGN 2006 M35 / M45; RADIATOR FAN CONTROL MODULE

CAMPAIGN ID #: P8227

APPLIED VEHICLE:
2006 M35 / M45 (Y50)
Refer to Infiniti Net to confirm campaign eligibility.

INTRODUCTION

On some 2006 M35/45 vehicles, the radiator fan motor may begin to operate incorrectly or not operate at all. If this occurs, in certain limited circumstances, the engine control logic may temporarily reduce engine output in order to protect against overheating damage. To prevent this potential condition, Infiniti is conducting this Voluntary Service Campaign to replace the radiator fan control module free of charge for parts and labor.

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Re: Cooling fans seem to be running all the time

Postby gavnator » Fri Feb 02, 2018 11:12 am

I went online to the Infiniti recall site and put in my VIN number to see if it cited a recall. Nothing. So are you saying this is a dealer initiated recall Campaign? So I guess I would have to call the Infiniti dealer and see if their will to comp me for the replacement. In any case, the module will arrive today.

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Re: Cooling fans seem to be running all the time

Postby midnightclub619 » Fri Feb 02, 2018 4:44 pm

gav - yes, that is correct. Looks like you pretty much got it and are ready for the part to come in. Good luck :dblthumb:

AE - same question as gav... where can I find that recall campaign. I think i'll try to see if my local dealer with comp my module. that would be cool

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Re: Cooling fans seem to be running all the time

Postby pegasus » Sat Feb 03, 2018 12:20 am

My fan doing the same thing, thanks for the info guys.

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Re: Cooling fans seem to be running all the time

Postby gavnator » Sat Feb 03, 2018 9:24 am

Just completed replacement of Radiator Fan Control Module. Took about 1/2 hour. Fan control works great. No more fans running all the time. Ordered part on Amazon pointed out by Midnight earlier in the string of posts. Here's the procedure I used for remove and replacement:

1) applied WD40 to (2) 10 mm bolts holding the air duct on top of radiator that routes air to filter box and
(2) 10 mm bolts that secure the module.
2) once you remove the right and left engine bay covers and the air duct the module is obvious bolted to
the fan unit.
3) there are 3 connectors on the fan control module. (2) are on the right of the module and (1) is on the
bottom. I removed the (2) connectors to the right first. The bottom connector was a bit difficult to get
at so removed the (2) bolts on the module freeing the module so I could get a better handle on the bottom
connecter to free it.
4) Bolted on new Radiator Fan Control Unit and connected the 3 fan connectors. Reinstalled engine bay covers
and air duct unit. Started M and let it run. Problem solved. That's it. :dblthumb:

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Re: Cooling fans seem to be running all the time [SOLVED - radiator fan control module]

Postby ae7456t » Mon Feb 05, 2018 3:30 pm

@gavnator/@midnight Good questions, and I am not surprised that you could not find your VIN listed in the Infiniti recall search database...The reason is likely because the radiator fan module fix is a "Voluntary Service Campaign" which differs from a more formal recall (e.g. Takata airbags).

Your best bet is to call a good/local/trusted Infiniti Service Center and have them do the VIN look up in their system...Of course, I did not heed my own advice...Since the module was less than $100, I figured it was easier to just replace it than to mess around with appointments, etc, but might be worth it if they will reimburse you the cost of the module.

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Re: Cooling fans seem to be running all the time [SOLVED - radiator fan control module]

Postby midnightclub619 » Mon Feb 05, 2018 8:50 pm

@AE - thx for the update. Yeah, the module was under $100. I'll give my local dealership a call and see if they will honor it. (crossing my fingers)

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Re: Cooling fans seem to be running all the time [SOLVED - radiator fan control module]

Postby airmanhoward » Tue Feb 06, 2018 12:22 pm

Hey gavnator in the pic is the I purchased off a local M35 and the right is my current one. Do you have a pic of yours?

https://ibb.co/i1ZV1H

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Re: Cooling fans seem to be running all the time [SOLVED - radiator fan control module]

Postby gavnator » Mon Feb 19, 2018 2:27 pm

Airman I don't have a picture but if you go up in the post you'll find midnights post with the part I bout on Amazon which is correct. I paid $42.00 for the part. The part is BECKARNLEY 203-0276 Cooling Fan Control Module. Look at Midnights posts above and follow my info. Piece of cake. ;)

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Re: Cooling fans seem to be running all the time [SOLVED - radiator fan control module]

Postby MercMan007 » Fri Jun 08, 2018 8:20 pm

Looks like I'm next to implement this fix. I've ignored the sound for a while but it's finally getting on my nerves.

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Re: Cooling fans seem to be running all the time [SOLVED - radiator fan control module]

Postby midnightclub619 » Thu Jun 14, 2018 8:23 am

@mercman - good luck! It's a relief that fan turns on/off when its supposed to. :dblthumb:

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Re: Cooling fans seem to be running all the time [SOLVED - radiator fan control module]

Postby njjuliano » Wed Feb 06, 2019 2:30 pm

I have this issue as well on a 2010. If the dealer will honor, seems easier to just bring in. You get a loaner when drop it off, and get on your way. Caveat, the voluntary recall (TSB) does not include my model year. Good time to see if they also can address my cruise TSB. Long shot to get a TSB covered in a 2010, but will give them a call. Glad to know that I can do this easily. Ups to EdBwoy for the vid.


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