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This is a discussion on New False Message within the Community Help forums, part of the Community Help Section category; Has anyone else had a similar situation? I was turning onto the interstate and the road had a moderate incline (as one will tend to ...

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    Regular Northern Al's Avatar
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    New False Message

    Has anyone else had a similar situation?

    I was turning onto the interstate and the road had a moderate incline (as one will tend to find in a mountainous area) and I switched to "sport mode" and pushed the accelerator to the floor to pass a log truck in the slow lane. Suddenly, I heard a pop and a "Check Coolant Level" message appeared on the dash board. I was only going one exit and the engine temp read in the normal range so I continued to my office.

    After the engine cooled I opened the coolant tank and it was full. Now, while the car is idling the exhaust note in economy mode sounds like it's in sport mode. I also noticed that a bunch of carbon splashed onto the exhaust tips. I called the MB service manager (who is very good at this dealership) and he said; "This is a new one. Bring it in it's still under warranty". The car has around 38K on it so it's about time for the next maintenance. I making an appointment.

    The warning hasn't come on since and the engine temp is running in the normal range.

    I'll keep you posted on the outcome.

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    Pro Texas Dave's Avatar
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    Quote Originally Posted by Northern Al View Post
    Has anyone else had a similar situation?

    I was turning onto the interstate and the road had a moderate incline (as one will tend to find in a mountainous area) and I switched to "sport mode" and pushed the accelerator to the floor to pass a log truck in the slow lane. Suddenly, I heard a pop and a "Check Coolant Level" message appeared on the dash board. I was only going one exit and the engine temp read in the normal range so I continued to my office.

    After the engine cooled I opened the coolant tank and it was full. Now, while the car is idling the exhaust note in economy mode sounds like it's in sport mode. I also noticed that a bunch of carbon splashed onto the exhaust tips. I called the MB service manager (who is very good at this dealership) and he said; "This is a new one. Bring it in it's still under warranty". The car has around 38K on it so it's about time for the next maintenance. I making an appointment.

    The warning hasn't come on since and the engine temp is running in the normal range.

    I'll keep you posted on the outcome.
    That's a new one! Sounds like sport, but drives like Eco now? We'll be interested in how this one turns out.
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    Ninja Sue Esponte's Avatar
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    I can't explain the coolant level message but, as for the exhaust, maybe the sudden increase in back pressure (when you "floored it") blew out the valve in the exhaust that modulates sound between Eco and Sport?

    -Eric

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    I think this happened before my 4K miles on my 14CLA45
    All they said was "maybe the dealer you bought it from didn't fill up the coolant all the way" I was like WTF!!!

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    jmc
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    New False Message

    Gee Al ... the coolant level managed to relate itself to the exhaust note? 😜
    The "something popped" part worries me ...
    And you have a 250 yes? Didnt think there are any dynamic exhaust parts.
    Last edited by jmc; 07-08-2016 at 09:59 AM.
    European delivery 20140331

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    Regular Northern Al's Avatar
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    Quote Originally Posted by Sue Esponte View Post
    I can't explain the coolant level message but, as for the exhaust, maybe the sudden increase in back pressure (when you "floored it") blew out the valve in the exhaust that modulates sound between Eco and Sport?

    -Eric
    Thanks Eric, for the reply! Didn't know there was a valve for change. Service manager said it was mapped to a different timing for sport on the phone. I will mention it and see what they come up with during the service visit.

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    Regular Northern Al's Avatar
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    Quote Originally Posted by jmc View Post
    Gee Al ... the coolant level managed to relate itself to the exhaust note? 
    The "something popped" part worries me ...
    And you have a 250 yes? Didnt think there are any dynamic exhaust parts.
    Yes, it's a 2014 CLA250.

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    Ninja Sue Esponte's Avatar
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    Quote Originally Posted by Northern Al View Post
    Thanks Eric, for the reply! Didn't know there was a valve for change. Service manager said it was mapped to a different timing for sport on the phone. I will mention it and see what they come up with during the service visit.
    @jmc is right...I'm not sure there's a dynamic part in the 250's exhaust. I was thinking about the 45's system.

    -Eric

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