Coolant level low - am I reading it wrong?
I've been getting a "Coolant level low" message from time to time. (Never got this in the first 1-2 months I owned the car). Sometimes it goes away on it's own and sometimes I just break down and add some coolant to the reservoir, which makes it go away. It never seems low though, as it always seems to be at "low fill level" line and when I take off the cap, the coolant is at the plastic that says "max".
The other strange thing is that I sometimes smell what I think to be a sweet coolant smell while driving, though it is very subtle and might just be the plastics, leather, and engine compartment odors mixing and coming in. Are there any common coolant leaks on '09 Supercharges?
Regardless, why would the coolant show as being low when it never LOOKS low. Am I just reading it wrong?
EDIT: This issue is fixed. I first replaced the coolant level sensor but this didn't fix the issue. I then tested the "float" in the coolant reservoir and found out that it doesn't float anymore (got a hole in it I guess?). I bought a replacement tank and and after replacing the old tank the error is gone for good.
Also, I noticed that with the old tank, while the coolant level in the coolant fill indicator tube looked okay, the other areas of the tank were much too full (the looked overfull everywhere except in the fill tube) and this most likely caused the coolant smell due to overflow. With the new tank, the coolant level is shown to be the same throughout the whole tank, and not just in the area of the coolant fill indicator.
The other strange thing is that I sometimes smell what I think to be a sweet coolant smell while driving, though it is very subtle and might just be the plastics, leather, and engine compartment odors mixing and coming in. Are there any common coolant leaks on '09 Supercharges?
Regardless, why would the coolant show as being low when it never LOOKS low. Am I just reading it wrong?
EDIT: This issue is fixed. I first replaced the coolant level sensor but this didn't fix the issue. I then tested the "float" in the coolant reservoir and found out that it doesn't float anymore (got a hole in it I guess?). I bought a replacement tank and and after replacing the old tank the error is gone for good.
Also, I noticed that with the old tank, while the coolant level in the coolant fill indicator tube looked okay, the other areas of the tank were much too full (the looked overfull everywhere except in the fill tube) and this most likely caused the coolant smell due to overflow. With the new tank, the coolant level is shown to be the same throughout the whole tank, and not just in the area of the coolant fill indicator.
"Low Coolant" warning even with full tank. This was intermittent for a year, then stayed on for a week. Decided to try the 'long-finger' technique that is suggested in this post to jiggle the magnet free. I could feel an opening at the bottom of the sensor shaft and it felt like something was spinning in the shaft, then it disappeared. Warning light went out right away.
Full tank.
Okay that's good but now I need to figure out how to test it
I thought I had better test my fix , so I removed fluid 50ml at a time to see if warning light would come on when fluid dropped in the tank.
At this level, which was pretty much at the bottom of the tank, the warning light came on. I had removed 600 Ml to make the light come on. I started to add new fluid 50 Ml at a time, and after adding 100 Ml the warning light went out. I topped up the rest and no warning light since.
Not a great picture, but you can see the standpipe that houses the floating magnetic sensor.
Last edited by taylods; Aug 27, 2021 at 02:52 PM. Reason: Somehow I missed the XK8 post I was aiming for.
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tonycharente
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Jan 26, 2021 11:18 AM
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