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A/C problem? Rear vents blow warm/hot air

Nathanael

Member
May 10, 2018
55
81
Toronto
When I turn the A/C on, cool air instantly comes out of the front vent(s), however, my poor dog suffers in the back because it blows hot air. Does it take longer for the rear a/c to kick in?
 

ewoodrick

Well-Known Member
Apr 13, 2018
5,285
3,735
Buford, GA
There's only one A/C unit, AFAIK, it just takes a little bit for the cool air to get from the front to the back. Same reason you have to let your shower run a little to get warm.
 
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Nathanael

Member
May 10, 2018
55
81
Toronto
There's only one A/C unit, AFAIK, it just takes a little bit for the cool air to get from the front to the back. Same reason you have to let your shower run a little to get warm.
I figured, just seemed longer then usual. Ill have to remember to cool down the car before with the app
 

Tony_YYZ

Tezler Guru
Apr 7, 2016
2,072
2,203
Caledon, ON Canada
I had a rear passenger complain it was blowing too cold almost as soon as we sat down.
yeah if anything i find my rears to be blowing colder than my fronts.

Does anyone know if the rear vents automatically turn on if the rear seat weight sensor and/or seat belt being bucked activates the rear vents?
 

Ryengjoe

Member
Apr 23, 2018
35
34
Toronto
yeah if anything i find my rears to be blowing colder than my fronts.

Does anyone know if the rear vents automatically turn on if the rear seat weight sensor and/or seat belt being bucked activates the rear vents?
The rear vents turn on when a person is sitting in the back seat but they do not sense children in car seats and have to be manually turned on.
 

Tony_YYZ

Tezler Guru
Apr 7, 2016
2,072
2,203
Caledon, ON Canada
The rear vents turn on when a person is sitting in the back seat but they do not sense children in car seats and have to be manually turned on.

My rear vents are always on. I have a car seat carrier base installed in the center seat with a seat belt. That's why I asked. Seems like it does think someone is always sitting back there.
 

Ryengjoe

Member
Apr 23, 2018
35
34
Toronto
My rear vents are always on. I have a car seat carrier base installed in the center seat with a seat belt. That's why I asked. Seems like it does think someone is always sitting back there.

There is a weight sensor in each back seat to sense if someone is sitting to warn of unbuckled seatbelt and to turn on the AC. Maybe my car seat doesn't trigger it but yours does.

Gave multiple people first rides yesterday and can confirm that the rear ac does turn on by itself if someone is sitting back there. Also can confirm that the seatbelt warning doesn't go away if someone is unbuckled in the back.
 

SSonnentag

Rocket Scientist
Apr 11, 2017
1,743
2,192
Arizona
Perhaps buckling the rear seatbelts when your dog is in the back would trigger the AC to come on??? Just tossing around ideas.
 

Tony_YYZ

Tezler Guru
Apr 7, 2016
2,072
2,203
Caledon, ON Canada
There is a weight sensor in each back seat to sense if someone is sitting to warn of unbuckled seatbelt and to turn on the AC. Maybe my car seat doesn't trigger it but yours does.

Gave multiple people first rides yesterday and can confirm that the rear ac does turn on by itself if someone is sitting back there. Also can confirm that the seatbelt warning doesn't go away if someone is unbuckled in the back.

Yeah I think the base, as light as it is, does trigger it.
 

SSonnentag

Rocket Scientist
Apr 11, 2017
1,743
2,192
Arizona
can confirm that the seatbelt warning doesn't go away if someone is unbuckled in the back.

I found this out when I was driving home from the hardware store with bags of screws and bolts in the back seat. I had to stop and buckle the seatbelts to get the messages to go away. :)
 

Fusion

Member
Apr 13, 2016
682
487
San Francisco
Experienced this for the first time today. Interesting that even after 45min it was still blowing warm out the right rear vent but the left one was a tiny bit colder. The car isn't that big that it should take this long for the rear blower to start blowing cold.
 

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