Refill Coolant - observe engine temp, on startup
Racer
Joined: Mar 2024
Posts: 377
Likes: 79
From: SW Florida, top down year round
I’m reading this thread as I got the same warning as the OP on my 2020 C2S Cab.
when you look into the fill pipe with a light, I could see the min and max flags and water level below min. I’d guess I added 6 oz to get it above min. This was a CPO car in March 2024.
Rght after filling, the error light did not appear again. Now I will monitor.
the car goes back to the dealer in a month as trade in, so I’m hoping not to have to deal with it. Maybe I should clear the codes?
when you look into the fill pipe with a light, I could see the min and max flags and water level below min. I’d guess I added 6 oz to get it above min. This was a CPO car in March 2024.
Rght after filling, the error light did not appear again. Now I will monitor.
the car goes back to the dealer in a month as trade in, so I’m hoping not to have to deal with it. Maybe I should clear the codes?
Rennlist Member
Joined: Oct 2021
Posts: 428
Likes: 344
I wouldn't stress too much. Every car I have owned requires a top up once a year or so on coolant - including several Hondas, BMW's, Audis, and a couple Mazdas. I always chalked this up to dry winter air, pulled into a hot engine bay, and the coolant overflow tank "breathes" and some of this evaporates.
Coolant in oil is usually obvious on oil drain - milky oil, or worst, water comes out of the sump.
As long as you don't have to top up weekly...
Coolant in oil is usually obvious on oil drain - milky oil, or worst, water comes out of the sump.
As long as you don't have to top up weekly...
Advanced
Joined: Feb 2021
Posts: 86
Likes: 31
From: Toronto
I recently started seeing the same issue as well and this was after a recent year 2 maintenance. I had the information display set to coolant temp and it seems to be hover around 99-106 celsius which is within the "normal" temp range. Bringing it in to dealership soon, but this is super odd.
Instructor
Joined: Jul 2024
Posts: 114
Likes: 118
From: South Shore, MA
Has anyone had any success figuring out where the coolant goes? It's clearly leaking somewhere as the smell is unmistakable.
Instructor
Joined: Jul 2024
Posts: 114
Likes: 118
From: South Shore, MA
I recently began to smell coolant after driving and a couple weeks ago got the warning on the dash that coolant was low. Went and bought a gallon of G40 from the local Autozone and it took half of that to fill back up. Car is at dealer today and they claim to be unable to find a leak and that it held pressure over night...
Has anyone had any success figuring out where the coolant goes? It's clearly leaking somewhere as the smell is unmistakable.
Has anyone had any success figuring out where the coolant goes? It's clearly leaking somewhere as the smell is unmistakable.
Rennlist Member
Joined: Nov 2020
Posts: 320
Likes: 99
From: Toronto
Instructor
Joined: Jul 2024
Posts: 114
Likes: 118
From: South Shore, MA
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Instructor
Joined: Sep 2005
Posts: 130
Likes: 19
From: Vancouver bc
Dealing with this on a 22 C2S
Dealer had to add 1 ltr according to invoice of coolant at last service which I found strange, car is under warranty until 2028.
i can smell the sweet coolant smell when I park up in my underground parkade and did get a low coolant warning recently, took the car straight to dealership who inspected and topped off and booked me back for further testing
pressure testing the system produced no leaks so they gave me back the car with an inconclusive verdict
got it home and laid down at the rear whilst the engine ticked down
then saw a coolant drip forming off the bottom of the turbo heat shield and then onto the floor
gonna take it back with the video I shot
Dealer had to add 1 ltr according to invoice of coolant at last service which I found strange, car is under warranty until 2028.
i can smell the sweet coolant smell when I park up in my underground parkade and did get a low coolant warning recently, took the car straight to dealership who inspected and topped off and booked me back for further testing
pressure testing the system produced no leaks so they gave me back the car with an inconclusive verdict
got it home and laid down at the rear whilst the engine ticked down
then saw a coolant drip forming off the bottom of the turbo heat shield and then onto the floor
gonna take it back with the video I shot
Rennlist Member
Joined: Nov 2020
Posts: 320
Likes: 99
From: Toronto
Dealing with this on a 22 C2S
Dealer had to add 1 ltr according to invoice of coolant at last service which I found strange, car is under warranty until 2028.
i can smell the sweet coolant smell when I park up in my underground parkade and did get a low coolant warning recently, took the car straight to dealership who inspected and topped off and booked me back for further testing
pressure testing the system produced no leaks so they gave me back the car with an inconclusive verdict
got it home and laid down at the rear whilst the engine ticked down
then saw a coolant drip forming off the bottom of the turbo heat shield and then onto the floor
gonna take it back with the video I shot
Dealer had to add 1 ltr according to invoice of coolant at last service which I found strange, car is under warranty until 2028.
i can smell the sweet coolant smell when I park up in my underground parkade and did get a low coolant warning recently, took the car straight to dealership who inspected and topped off and booked me back for further testing
pressure testing the system produced no leaks so they gave me back the car with an inconclusive verdict
got it home and laid down at the rear whilst the engine ticked down
then saw a coolant drip forming off the bottom of the turbo heat shield and then onto the floor
gonna take it back with the video I shot
M
Racer
Joined: Mar 2021
Posts: 288
Likes: 329
From: SoCal
My ’22 C2S needed coolant top-ups at increasingly shorter intervals until it became clear there was a leak. The dealer traced it to the coolant distributor housing, which required replacing all the seals.