engine overhearting warning - but engine temp is normal

[darrko]

Hi, I came back into my parked car (after 40 min at the shops) and started it, got this overheating warning right away. Notice (first 2 photos) though that the engine temp display shows normal starting temp. It is not even a hot day and this is late morning and the car had been parked for over 40 min.

Second 2 photos show the temp while driving around for a few minutes after the initial warning.

Last 2 photos are after driving back home (after about 25min of first warning) where the warning has disappeared and engine temp display is still normal.

What could it be? Faulty sensor?

[crazyinp]

This isn’t your coolant temp, the gauge is for the oil temp. I would check the coolant level and stop driving the car till you figure it out.

[darrko]

Originally Posted by crazyinp

This isn’t your coolant temp, the gauge is for the oil temp. I would check the coolant level and stop driving the car till you figure it out.

Just 2 months ago I had engine coolant leakage due to a cracked part, which was replaced. At the time I got a very clear message on the console asking me to check coolant level, which I did and therefore discovered the leakage.

This is why I never thought this fault was referring to the engine coolant since there was no mention of the coolant. Also, the coolant error message was persistent because at first I just thought the coolant level was low so I topped it up but due to the leak I kept losing it and the error message would pop up again. This message just mentioned the overheating engine ONCE and then disappeared.

If this was coolant related should I expect another error message about the low coolant level? Any other possible reason to get this fault?

[M5Rick]

^ It could be a sensor glitch, if coolant is not being lost anymore then it may be a signal bounce from when it was.
When dealer bled the brakes on mine last year the brake fluid warning came on after being parked up for shopping, after switching off for a minute the warning disappeared and never came back on again.

[crazyinp]

I would find someone with good tester and check if your water pumps are working too.

[JayDD007]

If you check faults in the DME you’ll probably find a problem with the turbo coolant pump. Whether the connector is melted to the pump or it’s just internally faulty it will likely need replacement.