(2015) Question about ATF change and auto AC function
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Junior Member
Joined: Nov 2020
Posts: 3
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From: NYC
(2015) Question about ATF change and auto AC function
Hi All, I've been browsing the forum and had some questions about my recently purchased 2015 Grand touring.
1. I've seen a lot of comments about changing the ATF and not trusting the "lifetime fluid". Most of these suggest doing it around 40k miles. I purchased the car with 77k and it hasn't ever had this done. Is it too late to do it at this point? I've read that doing it too late might actually make things worse.
2. I love the climate control and it's the first car I own where it seems to work great. I notice it keeps the AC on by default. Does this mean the compressor is always working or is the car smart enough to turn it on/off as needed? I'm not sure if I should just leave it on all the time and turn it on/off myself.
Thanks everyone!
1. I've seen a lot of comments about changing the ATF and not trusting the "lifetime fluid". Most of these suggest doing it around 40k miles. I purchased the car with 77k and it hasn't ever had this done. Is it too late to do it at this point? I've read that doing it too late might actually make things worse.
2. I love the climate control and it's the first car I own where it seems to work great. I notice it keeps the AC on by default. Does this mean the compressor is always working or is the car smart enough to turn it on/off as needed? I'm not sure if I should just leave it on all the time and turn it on/off myself.
Thanks everyone!
Banned
Joined: Dec 2016
Posts: 484
Likes: 3
From: Northern Illinois
In my opinion it's not too late to change the ATF. The sooner the better.
It's my understanding that the AC compressor will cycle on and off as needed. That said, if I'm not in need of cooling but I do need some heat and/or ventilation, I manually turn off the compressor/AC switch. It remembers my setting on the next start up.
It's my understanding that the AC compressor will cycle on and off as needed. That said, if I'm not in need of cooling but I do need some heat and/or ventilation, I manually turn off the compressor/AC switch. It remembers my setting on the next start up.
Senior Member
Joined: May 2020
Posts: 393
Likes: 1
From: Central Wisconsin
Just my opinion but two changes for your transmission isn't a bad idea either.
The older transmissions used by Mazda were not the best.
So, flush, drive for a few hundred miles and then flush again. that gets most of any
nasty fluid out.
My 2¢
The older transmissions used by Mazda were not the best.
So, flush, drive for a few hundred miles and then flush again. that gets most of any
nasty fluid out.
My 2¢
Senior Member
Joined: Jun 2017
Posts: 342
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From: Superstition Mountains
Senior Member
Joined: Oct 2018
Posts: 10,618
Likes: 231
From: Northern California
LOL ....
PM if you want some personal help. What I can provide for you for information you can decide to post it or not.
Sometimes I don't care to cross swords with people that really have no real experience answering technical questions on forums and would rather call me names or challenge what I post instead of realizing this is what I have done professionally for over 34 decade of my life. LOL
PM if you want some personal help. What I can provide for you for information you can decide to post it or not.
Sometimes I don't care to cross swords with people that really have no real experience answering technical questions on forums and would rather call me names or challenge what I post instead of realizing this is what I have done professionally for over 34 decade of my life. LOL
Senior Member
Joined: Oct 2015
Posts: 705
Likes: 9
From: Madeira, Ohio
LOL ....
PM if you want some personal help. What I can provide for you for information you can decide to post it or not.
Sometimes I don't care to cross swords with people that really have no real experience answering technical questions on forums and would rather call me names or challenge what I post instead of realizing this is what I have done professionally for over 34 decade of my life. LOL
PM if you want some personal help. What I can provide for you for information you can decide to post it or not.
Sometimes I don't care to cross swords with people that really have no real experience answering technical questions on forums and would rather call me names or challenge what I post instead of realizing this is what I have done professionally for over 34 decade of my life. LOL
Member
Joined: Jun 2020
Posts: 38
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From: Branson MO
My understanding is that the A/C is on as you describe as a method to keep excessive humidity out of the air, i.e when the defroster is on since the cooling cycle by nature removes humidity. I believe in most cars the A/C evaporator coil is ahead of the heat coil in the unit so the air can be cooled and dehumidified and then heated to the desired temperature if necessary. My suggestion would be to just leave it on, The compressor has an electric clutch on it that will engage when the A/C is needed. the restof the time it is not putting any load on the engine.
Banned
Joined: Dec 2016
Posts: 484
Likes: 3
From: Northern Illinois
LOL ....
PM if you want some personal help. What I can provide for you for information you can decide to post it or not.
Sometimes I don't care to cross swords with people that really have no real experience answering technical questions on forums and would rather call me names or challenge what I post instead of realizing this is what I have done professionally for over 34 decade of my life. LOL
PM if you want some personal help. What I can provide for you for information you can decide to post it or not.
Sometimes I don't care to cross swords with people that really have no real experience answering technical questions on forums and would rather call me names or challenge what I post instead of realizing this is what I have done professionally for over 34 decade of my life. LOL
I for one would like to hear your opinion on the subject and I promise not to call you any names or to challenge you on this.
Senior Member
Joined: Oct 2018
Posts: 10,618
Likes: 231
From: Northern California
LOL I think you knew what I meant 
3 decades
Funny you can always tell the old timers on automotive based forums, they are generally the ones that find mistakes in sentence structure ,grammar, spelling and obvious typos!
3 decades
Funny you can always tell the old timers on automotive based forums, they are generally the ones that find mistakes in sentence structure ,grammar, spelling and obvious typos!
Senior Member
Joined: Oct 2018
Posts: 10,618
Likes: 231
From: Northern California
You can look into my past response if you are truly interested regarding my comments.
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