How to turn off engine hot A/C off message?

Tiny
VICTORTIN
  • MEMBER
  • 2008 SUZUKI XL7
  • 3.6L
  • 6 CYL
  • AUTOMATIC
  • 143,800 MILES
Change spark plugs and cts everything good. How turn off or reset for display turn off.
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Sunday, April 11th, 2021 AT 3:43 PM

14 Replies

Tiny
KASEKENNY1
  • EXPERT
Can you get a picture of the message? If the engine is hot then that is why we have this message. You said everything is fine but does the engine run hot or cut off?

Here is a guide that will help with overheating issues.

https://www.2carpros.com/articles/symptoms-of-an-overheating-engine

When does this message come on? Is it on all the time or only after driving the engine?

Lastly we need to scan for codes to find out what the codes are just to make sure we don't have any other issues.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Let's start with this and go from there but if nothing is truly wrong with this vehicle then you can try a battery disconnect for 10 minutes and see if that forces a reset of the module.
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Monday, April 12th, 2021 AT 5:14 PM
Tiny
VICTORTIN
  • MEMBER
It's not overheating. I just did the spark plug change because I didn't know when was the last time it got changed since I bought it. The car was running great didn't have any issues with it.
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Monday, April 12th, 2021 AT 5:33 PM
Tiny
STEVE W.
  • EXPERT
Okay, you got this message right after you changed the spark plugs? If yes go back to the wiring around the plugs and see if you knocked a sensor wire off by accident. You can get this message if the engine coolant sensor harness is unplugged or damaged. The computer defaults to thinking the engine is hot and starts limiting things in order to cool it off. The sensor is just above the exhaust manifold on the front of the engine.
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Monday, April 12th, 2021 AT 5:46 PM
Tiny
VICTORTIN
  • MEMBER
I also changed that cooling sensor too and checked all wires that I touch only and starts fine just that the fans stay on AC off and the display on dash.
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Tuesday, April 13th, 2021 AT 9:29 AM
Tiny
STEVE W.
  • EXPERT
Did you change it before getting this or after? It sounds like the sensor isn't reporting properly, either a broken wire or defect in the PCM are likely. Do you have access to a scan tool that will show live data to see what the ECT is reporting to the PCM? It is acting like the sensor is either disconnected or shorted to power. A scan tool should show the codes to help track it down.
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Tuesday, April 13th, 2021 AT 11:05 AM
Tiny
VICTORTIN
  • MEMBER
After I changed the plugs and the coolant sensor, I have done everything that you guys are helping me with and still shows engine hot A/C off.
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Wednesday, April 14th, 2021 AT 9:33 AM
Tiny
STEVE W.
  • EXPERT
When you replaced the coolant sensor did you use an OEM part? Some vehicles are really touchy when it comes to what parts are used. Also you really need to find a scan tool that would let you see what temperature the coolant sensor is reporting to the ECM. The reason is that by default if the sensor was unplugged or the wiring was bad or damaged the computer will automatically think that the engine is running hot. But in the scan data you can see the reported temperature.
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Wednesday, April 14th, 2021 AT 10:31 AM
Tiny
VICTORTIN
  • MEMBER
I bought the sensor at AutoZone. I think it's like the original one but going to check the hardness to make sure it is not damaged. Going to try disconnected the battery hope that will work.
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Wednesday, April 14th, 2021 AT 5:04 PM
Tiny
STEVE W.
  • EXPERT
I would look at that close. Do you have a scan tool that would show live data? Some of the low cost ones do that, the Autel AL329 that you can get at many places can do limited live data, coolant temperature is one of them. With it you could easily tell if the sensor is the issue.
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Wednesday, April 14th, 2021 AT 5:37 PM
Tiny
VICTORTIN
  • MEMBER
Thank you for your response it's very helpful. I will have to find someone that has that to get it checked out.
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Monday, April 19th, 2021 AT 9:45 AM
Tiny
STEVE W.
  • EXPERT
You are welcome. Please let us know what you find once you have a chance to get it tested.
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Monday, April 19th, 2021 AT 12:05 PM
Tiny
VICTORTIN
  • MEMBER
Thank you Steve you help me find the problem, it was the hardness it's broken inside not making any contact.
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Wednesday, April 21st, 2021 AT 10:26 AM
Tiny
VICTORTIN
  • MEMBER
Thank you for your response it help me greatly. Got the car running back to normal. Thank you.
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Thursday, April 22nd, 2021 AT 9:15 AM
Tiny
STEVE W.
  • EXPERT
Great to hear you have gotten it repaired. Thank you for the update and using 2CarPros.
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Thursday, April 22nd, 2021 AT 11:56 AM

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