A/C light keeps coming on
Thread Starter
Burning Brakes
Joined: Dec 2009
Posts: 963
Likes: 23
A/C light keeps coming on
Hey guys, when I am adjusting my climate control the dumb A/C light illuminates and I have to press the button to turn it back off. It's pretty cold here so I have been setting it to about 75 to warm up and defrost the windows but the A/C light still comes on. Is this normal or should I get a new unit? I haven't stood outside to see if the compressor is engaging but it doesn't sound like it from inside the car.
Tech Contributor
Joined: Jan 2007
Posts: 19,452
Likes: 1,157
From: Dyer, IN
Hey guys, when I am adjusting my climate control the dumb A/C light illuminates and I have to press the button to turn it back off. It's pretty cold here so I have been setting it to about 75 to warm up and defrost the windows but the A/C light still comes on. Is this normal or should I get a new unit? I haven't stood outside to see if the compressor is engaging but it doesn't sound like it from inside the car.
Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
Its normal
Heres the description from the Owners Manual:
The air conditioning cools and dehumidifies the air coming into
the vehicle. The air conditioning cannot be turned off in
defrost and defog, as it helps to remove moisture from
the vehicle. It also helps to keep the windows clear.
Heres the description from the Owners Manual:
The air conditioning cools and dehumidifies the air coming into
the vehicle. The air conditioning cannot be turned off in
defrost and defog, as it helps to remove moisture from
the vehicle. It also helps to keep the windows clear.
1st Gear
Joined: Sep 2006
Posts: 1
Likes: 0
That is correct. If you have the defroster on even when not wanting AC, the AC will be on to defog the windshield. Now, if you want to turn the AC light off (will turn off the windshield defogger) change your MODE using the mode switch to deselect the defogger, then push the AC button and it will come off.
Good Luck
Good Luck
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