Inconsistent Cabin Air Output

The part number on the bag is correct, though. And this part number is listed for years 05-15. Wouldn’t the reversed one (model years 12-15) have a different part number?

 

Air flow does not increase with the windows down as stated in a previous post.

 

I would think the numbers would be different also, but your symptoms sound the same as it works, but is backwards on the hot / cold settings correct or did I read it wrong? As in your post you said:

"So I removed it, plugged the old one back in, and noticed that the old motor was turning the opposite direction of the new motor."

With the only difference being swapping the servos they sold you the one for the older Tacoma.

Are you using the original A/C control panel in the 2013?

I have never personally worked on one of these reversals so I'm guessing based on what I have read.

The Mix Servo is directly controlled by the control panel.

Where did you buy the Mix Servo, Dealer?

Did you read post # 24 I linked? It says that Pre 2009 were the ones that were backward from the newer models.

 

I am assuming the dials in my 2013 are original. I have not changed them. Is there a way to tell? I don’t know the differences between the older and newer.

If it were the control panel telling the motor which way to turn, wouldn’t it be telling both motors to function the same way?

Servo was ordered from a dealer.

 

I read post #24, yes. This thread isn’t describing what I am doing, in which the control panel is not changing but the motor is.

Yes I could do this control panel mod to reverse my temp control and “correct” it, but the issue here is with the servo otherwise the static control panel would be telling both old and new motors to do the same thing. It wouldn’t tell the old motor to turn one direction and the new motor to turn another.

 

The only explanation for it being opposite is the incorrect servo, it's controlled by the switch varying the voltage (0-12v) on pin 2 red/white wire.
05-08 full cold is 12v full hot is 0v
09-15 full cold is 0v full hot is 0v

 

Yes that’s what I’m thinking. But I’m only finding one part number for all 2nd Gen mix servos. If this isn’t the correct one, then I have no clue what to order. Part number was given to me by the dealer. I just don’t know how it could be incorrect. Could they have labeled the one I received incorrectly? Did I get a defective?

 

It's possible its a mislabeled part, can you read the part number on the old one and see if they match?

 

No part numbers listed on old or new, just these numbers below the barcode that bring up nothing of any help on the Googles.



I opened up the servos to try to see what was different about them, if apparent. Gears all look identical but the circuit boards are definitely different. I’m not an electrical whiz, so does anything stand out to you guys?

Old servo:





New servo:

 

Older panels are silver and the newer panels are black.

That was my original contention is that the only difference is the Servo Motor assembly. The new one runs backwards so it must be the older version before 2009.

I understand what you are doing ( replacing the Mix Servo ), but the symptoms you have ( reversed heat and cooling, Servo motor running backwards ) are the same. In my opinion installing an older servo motor would cause the same symptoms. This is evidenced by the old servo turning in the correct direction when reinstalled.

If the old servo is working why are you replacing it?

I agree I would not rewire anything either. I only wanted you to see where I was coming from with my theory.

If you are hell bent to replace a working servo, I would go back to the dealer and describe my issue and have him look it up by VIN Number.

 

I guess I am not picking up on what you’re explaining. There is no old version and new version servo. There is, however, an old version and new version control panel as you stated. Mine is correct (black).

If your theory is that there are two different servos available (05-09 and 09-15) then those servos would have two different part numbers. There is only one part number available which covers all model years. There is no other part number to exchange it for. This is why I am thinking that perhaps this servo is for a different vehicle altogether and was mislabeled.

I am replacing it to rule it out as the problem. As my early posts describe, the issue I have is intermittent and doesn’t occur until the truck has been running for a bit. Another member suggested that he’s seen these servos begin doing their own thing intermittently when they start to fail.

 

I was pointing out that in 2009 it changed and if mismatched it would result in the backwards operation such as you have. The only thing being changed is the servo motor drive assembly. Which is obviously defective or incorrect.

Well I wish you well and hope you get this sorted out.

 

I do appreciate your help trying to figure this out. I am just having trouble with believing they changed the servo along with the control panel in 2009, but didn’t give the new servo a new part number. Something just isn’t adding up. I won’t be able to find anything more out until I can talk to the dealer tomorrow, but I’ll update what I find.

 

Dealer I bought them from is not cooperating with me. They confirmed that there is not a different servo for 09+ model years and insist the part is correct. They will not, however, return or exchange because it is an electrical component. What the heck?! Needless to say they've lost my business. I'll drive a little further to the next closest dealer from now on. No idea what to do at this point. I'm not going to just buy another servo and hope it's correct.

 

No dealer of ANYTHING will exchange an electrical part.

 

nope, unless they sold you the wrong part. In this case the dealership sold the wrong part and won't admit it. You will have to eat the cost of that servo, I reckon.

2 people have already posted the answer to your problem, you have the wrong servo.

 

I am aware and agree that this is the wrong servo.

The problem is that if this isn't the correct servo, I don't know what is since no alternate part # seems to exist.

 

Try calling up the alternate dealership you mentioned. Talk to their parts guy and see what he says. Would think they could match it for you with a VIN. Then you can confirm if that P/N is the same.

 

Contact this place https://parts.camelbacktoyota.com/

Tell them the whole story, they will send you the correct servo. Contact them via phone, so you can explain.

 

WE WERE ALL CORRECT!

Did I have the incorrect servo? Yes
Did the servo change in 2009? No

Not sure whether to feel duped, dumb, or both so I'll go with both. I contacted another dealer in Cincinnati and told them the story. I also sent the video in my previous post to the guy I spoke to. He knew right away what the problem was. The part numbers given to me by dealer #1 are all correct, however they identified all three of them incorrectly. 87106-04050 IS NOT the temp servo, it is the mode servo. They are identical in every way other than the direction they turn. 87106-04060 is the temp servo. 87106-04040 is the recirc damper servo, which does not look like the other two.

Shame on me for not noticing that the mode servo looked the same as the temp (although it's not very apparent until it's removed because of its orientation), but shame on dealer #1 for giving me wrong information AND not owning up to it.

Photo below of all three servos and their correct part numbers to help anyone who runs into this in the future. Also updating my previous post where I listed the part numbers given to me by dealer #1.



Since I can't return either of the incorrect servos I just went ahead and installed them. Might as well put them to use. Before I purchase the correct temp servo, I'm going to give it a little time to see if changing the mode servo fixed the issue because once I removed it, it did look a little rough and was gunked up with grease. Maybe I got lucky here.