Is there a way to keep recirculating the air without it turning off?
Thread Starter
Senior Member
Joined: Jul 2020
Posts: 353
Likes: 60
C43
Is there a way to keep recirculating the air without it turning off?
I tend to turn off my AC after a bit and just turn on the recirculating air, which does a really good job of just maintaining temperature inside the car. However, I notice that after about 10 minutes or so, the car automatically turns off air recirculation and the outside air just comes in and heat everything up again so I have to turn the AC back on. If I catch it fast enough I can click the button to recirculate air again but it's just 1 more thing to be distracted with while driving.
Is there no way to just keep this on? I read in the user manual that it will automatically disable after some time. This is the first car I've been in that wont let me keep air recirculation on for as long as I want.
Is there no way to just keep this on? I read in the user manual that it will automatically disable after some time. This is the first car I've been in that wont let me keep air recirculation on for as long as I want.
Junior Member
Joined: Dec 2018
Posts: 28
Likes: 2
From: California
2015 C350 Sport, 2019 C43
I have been wondering the same thing. I live in CA and the air quality is really bad. It is tolerable if I have it on recirc but I have eye/throat issues drawing 'fresh" air into the car. I will follow this thread and worst case contact the dealer. If I get resolution, I will post.
Thread Starter
Senior Member
Joined: Jul 2020
Posts: 353
Likes: 60
C43
I have been wondering the same thing. I live in CA and the air quality is really bad. It is tolerable if I have it on recirc but I have eye/throat issues drawing 'fresh" air into the car. I will follow this thread and worst case contact the dealer. If I get resolution, I will post.
Out Of Control!!
Joined: Nov 2018
Posts: 11,468
Likes: 5,357
From: San Francisco Bay Area
2019 C63CS
Why making things complicated? I can understand the current air quality argument and those who are sensitive might wanna consider replacing the air filter with something that filters out more of the particles that are bothering you. Unfortunately, we don't get the optional air ionization in the USA, which is what would trap those particles. The interior doesn't just heat up from the outside air. It also heats up from the sun entering through the windows etc. The AC in these cars is not an on/off thing. The compressor is variable and it only runs as much as is necessary to maintain the cabin temperature. It's an automatic climate control and the objective of it is to keep the interior temperature at the set temperature. Much like the thermostat in your house. It will run the compressor as much as needed and control the air flow to make sure enough cool or warm air is entering the cabin to reach and maintain the set temperature. You are kidding yourself if you think you can do a better job manually messing with it. BTW, the AC doesn't just cool the interior, but it also removes moisture, that's why letting it run when it rains or during the winter keeps the windows from fogging up. To answer the original question, yes, the recirc automatically turns off after a while. I think it's to make sure the air inside the cabin doesn't get stale, and fresh oxygen is brought in.
Last edited by superswiss; Sep 7, 2020 at 08:13 PM.
