Fault: Cooling System. Visit Repair Shop.
06-26-2021, 05:34 PM
#1
Fault: Cooling System. Visit Repair Shop.
The car is a 2014 981CS PDK. NO PSE, Cantrelle exhaust.
Yesterday after driving in a downpour, the above message in yellow appeared on the screen in the instrument cluster. All temperatures were normal [oil 212F, coolant 194F], so I continued as I was only about two blocks away from home.
No coolant leaks or smells, and the coolant level is at the max mark in the filler cup.
After some research today, I have come to the conclusion that this is most likely a COV [Change Over Valve] issue. I attached my iCarsoft POR II to the car, and could find no codes or faults. Nor could I erase the fault message from the display in order to see if it would repeat in an effort to determine whether this was just a nuisance alert.
And I bought this thing why?
And tonight I sat in the car in the garage with the door open and after cancelling the air conditioning, I turned up the heat to the maximum value of 86F and ambient temperature came from the vents. No heat.
Questions:
1. It was 87F outside, and a few degrees cooler in the garage. Coolant temperature when I did this was between 150 and 160 degrees. Shouldn't I have felt heat?
2. Where is it located and how hard is it to change out this COV?
3. The annoying "Fault: Cooling System. Visit Repair Shop." How do I reset this? Is PIWIS necessary?
4. How does one go about properly diagnosing this? Again, is PIWIS necessary? Or does a mechanic have to climb all over the engine with 12 volts and listen to clicks?
Thank you.
Yesterday after driving in a downpour, the above message in yellow appeared on the screen in the instrument cluster. All temperatures were normal [oil 212F, coolant 194F], so I continued as I was only about two blocks away from home.
No coolant leaks or smells, and the coolant level is at the max mark in the filler cup.
After some research today, I have come to the conclusion that this is most likely a COV [Change Over Valve] issue. I attached my iCarsoft POR II to the car, and could find no codes or faults. Nor could I erase the fault message from the display in order to see if it would repeat in an effort to determine whether this was just a nuisance alert.
And I bought this thing why?
And tonight I sat in the car in the garage with the door open and after cancelling the air conditioning, I turned up the heat to the maximum value of 86F and ambient temperature came from the vents. No heat.
Questions:
1. It was 87F outside, and a few degrees cooler in the garage. Coolant temperature when I did this was between 150 and 160 degrees. Shouldn't I have felt heat?
2. Where is it located and how hard is it to change out this COV?
3. The annoying "Fault: Cooling System. Visit Repair Shop." How do I reset this? Is PIWIS necessary?
4. How does one go about properly diagnosing this? Again, is PIWIS necessary? Or does a mechanic have to climb all over the engine with 12 volts and listen to clicks?
Thank you.
Last edited by Thacker; 06-26-2021 at 11:13 PM.
06-26-2021, 10:57 PM
#2
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do you have the factory PSE?
it is very likely the COV that connected to the PSE vacuum hose gone bad
it is pretty easy to find it when you open the engine bay hood
just trace the vacuum hose
it is very likely the COV that connected to the PSE vacuum hose gone bad
it is pretty easy to find it when you open the engine bay hood
just trace the vacuum hose
06-26-2021, 11:10 PM
#3
06-27-2021, 07:05 AM
#4
The car is a 2014 981CS PDK. NO PSE, Cantrelle exhaust.
Yesterday after driving in a downpour, the above message in yellow appeared on the screen in the instrument cluster. All temperatures were normal [oil 212F, coolant 194F], so I continued as I was only about two blocks away from home.
No coolant leaks or smells, and the coolant level is at the max mark in the filler cup.
After some research today, I have come to the conclusion that this is most likely a COV [Change Over Valve] issue. I attached my iCarsoft POR II to the car, and could find no codes or faults. Nor could I erase the fault message from the display in order to see if it would repeat in an effort to determine whether this was just a nuisance alert.
And I bought this thing why?
And tonight I sat in the car in the garage with the door open and after cancelling the air conditioning, I turned up the heat to the maximum value of 86F and ambient temperature came from the vents. No heat.
Questions:
1. It was 87F outside, and a few degrees cooler in the garage. Coolant temperature when I did this was between 150 and 160 degrees. Shouldn't I have felt heat?
2. Where is it located and how hard is it to change out this COV?
3. The annoying "Fault: Cooling System. Visit Repair Shop." How do I reset this? Is PIWIS necessary?
4. How does one go about properly diagnosing this? Again, is PIWIS necessary? Or does a mechanic have to climb all over the engine with 12 volts and listen to clicks?
Thank you.
Yesterday after driving in a downpour, the above message in yellow appeared on the screen in the instrument cluster. All temperatures were normal [oil 212F, coolant 194F], so I continued as I was only about two blocks away from home.
No coolant leaks or smells, and the coolant level is at the max mark in the filler cup.
After some research today, I have come to the conclusion that this is most likely a COV [Change Over Valve] issue. I attached my iCarsoft POR II to the car, and could find no codes or faults. Nor could I erase the fault message from the display in order to see if it would repeat in an effort to determine whether this was just a nuisance alert.
And I bought this thing why?
And tonight I sat in the car in the garage with the door open and after cancelling the air conditioning, I turned up the heat to the maximum value of 86F and ambient temperature came from the vents. No heat.
Questions:
1. It was 87F outside, and a few degrees cooler in the garage. Coolant temperature when I did this was between 150 and 160 degrees. Shouldn't I have felt heat?
2. Where is it located and how hard is it to change out this COV?
3. The annoying "Fault: Cooling System. Visit Repair Shop." How do I reset this? Is PIWIS necessary?
4. How does one go about properly diagnosing this? Again, is PIWIS necessary? Or does a mechanic have to climb all over the engine with 12 volts and listen to clicks?
Thank you.
Last edited by Fullyield; 06-27-2021 at 07:07 AM.