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2012 Acura TL air condtioner issue solved! #4113176 06/02/16 09:48 AM
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MajorCavalry Offline OP
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Hi all,

My 2012 TL developed a intermittent air conditioning problem. Would work perfectly then stop working. Could work fine for the next several days then the problem would arise. Not so great with our recent 90 degree days.

Brought it to the dealer which was next to useless. Spent the time describing the problem to the service writer who distilled the entire description to "customer state blows warm air"

With this description, the mechanic tested the electrics and drove it. Found no problem, of course. Picked up the car and asked to speak to the mechanic. Nice guy. Explained the situation in detail and he tentatively diagnosed as a failing, intermittent compressor clutch relay. I bought the part. Parts guy says they stock up on them this time of year. Mechanic installed in 3 minutes in the lot. Problem seemingly solved!

Part number is Honda 39794-SDA-A05.

Hope this can help a few people.


Steve

2015 Lexus GS 350 AWD premium CPO
Nebula Grey Pearl
Flaxen interior
24k miles



Re: 2012 Acura TL air condtioner issue solved! [Re: MajorCavalry] #4113195 06/02/16 10:14 AM
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Sayjac Offline
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Glad you got it fixed, but you gotta love the service writer. If he/she'd written customer says air only blows cold 'intermittently', tech likely would have gotten it the first time.

Good move talking to mech/tech.

Re: 2012 Acura TL air condtioner issue solved! [Re: MajorCavalry] #4113249 06/02/16 11:20 AM
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Doog Offline
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Just had the same issue with the daughters 2009 Honda Civic...must be a Honda thing...

Re: 2012 Acura TL air condtioner issue solved! [Re: MajorCavalry] #4113298 06/02/16 12:13 PM
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cptbarkey Offline
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Yes, Honda is legendary for their trash AC systems.

Re: 2012 Acura TL air condtioner issue solved! [Re: MajorCavalry] #4113493 06/02/16 04:05 PM
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Merkava_4 Offline
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That's why I don't like dealerships for service; they don't let you talk to the mechanic.

Re: 2012 Acura TL air condtioner issue solved! [Re: Sayjac] #4113505 06/02/16 04:20 PM
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GiveMeAVowel Offline
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Originally Posted By: Sayjac
Glad you got it fixed, but you gotta love the service writer. If he/she'd written customer says air only blows cold 'intermittently', tech likely would have gotten it the first time.

Good move talking to mech/tech.


Yes, we all pay such outrageous prices to the "professionals" at the $tealer so they they can't even take the time to properly comprehend what the customer is trying to tell them, and no doubt the OP clearly had a good grasp of the symptoms, yet the lazy incompetent SW couldn't take few more minutes to write down the proper information for the mechanic.

Re: 2012 Acura TL air condtioner issue solved! [Re: GiveMeAVowel] #4113525 06/02/16 05:00 PM
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MajorCavalry Offline OP
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Did an autopsy of the relay.

I don't know if this relay is the old style or new style. I didn't even know there were two versions. LOL. Examination of the contacts revealed significant pitting and corrosion. I could see why it was intermittent.


Steve

2015 Lexus GS 350 AWD premium CPO
Nebula Grey Pearl
Flaxen interior
24k miles



Re: 2012 Acura TL air condtioner issue solved! [Re: MajorCavalry] #4113898 06/03/16 06:31 AM
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Eddie Offline
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I am a Do it myself on most things, but, if I can't talk to a mechanic or watch them work, even from 20 foot away, then I don't go there. Ed


2014 CX5 Touring 2.5L :-)
Re: 2012 Acura TL air condtioner issue solved! [Re: MajorCavalry] #4113995 06/03/16 08:51 AM
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Schmoe Offline
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MajCav.....my 06 has done stuff like that every once in a while. So I looked up that part number and it will fit my 06 Accord. After looking it up from Honda, there are 3 different relay's that use that same part. Did you have to get 3 of them? Or just one? This is good to know and appreciate the information!!!!


01 Supercrew Lariat 4X4
06 Accord EX-L V6
2018 CRV EX-L
2017 Accord Coupe V6 EX-L 6AT
Re: 2012 Acura TL air condtioner issue solved! [Re: Schmoe] #4114291 06/03/16 02:30 PM
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MajorCavalry Offline OP
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Originally Posted By: Schmoe
MajCav.....my 06 has done stuff like that every once in a while. So I looked up that part number and it will fit my 06 Accord. After looking it up from Honda, there are 3 different relay's that use that same part. Did you have to get 3 of them? Or just one? This is good to know and appreciate the information!!!!


Just one relay.


Steve

2015 Lexus GS 350 AWD premium CPO
Nebula Grey Pearl
Flaxen interior
24k miles



Re: 2012 Acura TL air condtioner issue solved! [Re: MajorCavalry] #4114859 06/04/16 08:54 AM
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WyrTwister Offline
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I saw a youtube video of the same problem with the A/C relay on a Honda .

Mechanic removed the plastic cover on the relay & the contacts were burned .

God bless
Wyr


Wyr
God bless
Re: 2012 Acura TL air condtioner issue solved! [Re: Schmoe] #4115318 06/04/16 07:32 PM
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Trav Offline
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Originally Posted By: Schmoe
MajCav.....my 06 has done stuff like that every once in a while. So I looked up that part number and it will fit my 06 Accord. After looking it up from Honda, there are 3 different relay's that use that same part. Did you have to get 3 of them? Or just one? This is good to know and appreciate the information!!!!


STANDARD MOTOR PRODUCTS RY737 available for $6 and change from AA or $4.50 from rock auto, it will replace the 39794-sda-a05, a01, a02,a03 a04. The a05 is made by Mistui in Japan the 003 is made in USA by Omron, they are interchangeable.
The SMP/ Intermotor part seems more reliable. Every Honda should have a spare in the glove box.


ASE L1, Master. Deutsch Meisterbrief.
Re: 2012 Acura TL air condtioner issue solved! [Re: cptbarkey] #4115470 06/04/16 11:42 PM
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dishdude Online Content
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Originally Posted By: cptbarkey
Yes, Honda is legendary for their trash AC systems.


Not sure I would consider a relay part of the AC system.


2018 Challenger SRT 392 PUP 0w-40 Wix 57899XP
2018 GTI
2019 Tiguan
Re: 2012 Acura TL air condtioner issue solved! [Re: dishdude] #4115665 06/05/16 09:58 AM
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Trav Offline
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As you point out it isn't. Its an electrical part that when it fails effects the A/C system. Honda A/C systems are usually pretty reliable other than that inexpensive relay.
GM Suburbans and Yukons suffer the same relay complaint (same manufacturer of the relay).


ASE L1, Master. Deutsch Meisterbrief.
Re: 2012 Acura TL air condtioner issue solved! [Re: Trav] #4116094 06/05/16 05:51 PM
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MajorCavalry Offline OP
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Originally Posted By: Trav
As you point out it isn't. Its an electrical part that when it fails effects the A/C system. Honda A/C systems are usually pretty reliable other than that inexpensive relay.
GM Suburbans and Yukons suffer the same relay complaint (same manufacturer of the relay).


Trav,

Thanks for the information. Ordered the SMP RELAY from Amazon for 8.00 and change shipped to the house. Not to hijack my own thread, but what other systems utilize this relay?

Steve

Last edited by MajorCavalry; 06/05/16 05:51 PM.

Steve

2015 Lexus GS 350 AWD premium CPO
Nebula Grey Pearl
Flaxen interior
24k miles



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