Coolant Temperature
05-14-2011, 07:31 PM
#1
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W204/W220
Coolant Temperature
Hey Guys,
I have a 2010 W204 C3004M. Starting a few weeks ago the engine coolant gauge would display "unstable" temperature readings.
For example, once the car was fully warmed up to around ~90C
The following would happen:
1. Sometimes the temperature reading would drop to around 80
2. Sometimes it would go back up to around ~90C
This would happen multiple times during one single trip.
It NEVER goes above 90s though.
Anyone experiencing the same problem? Should I bring it to a service center?
Thanks!
I have a 2010 W204 C3004M. Starting a few weeks ago the engine coolant gauge would display "unstable" temperature readings.
For example, once the car was fully warmed up to around ~90C
The following would happen:
1. Sometimes the temperature reading would drop to around 80
2. Sometimes it would go back up to around ~90C
This would happen multiple times during one single trip.
It NEVER goes above 90s though.
Anyone experiencing the same problem? Should I bring it to a service center?
Thanks!
05-14-2011, 08:47 PM
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Location: Long Island, NY
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2012 C63 AMG edition 1
Same exact thing happened to my 2010 E class. Except the temperature would sometimes go higher than 90!!! (scary, I know!) I brought the car into the dealer and they performed what they called an "ECU update" and after that, my temps stabilized.
I would just bring it into them
I would just bring it into them
05-14-2012, 02:21 AM
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2018 GLE AMG 63
can anyone help me figure out why is it that some c class have an extra part that attaches to the coolant tank. looks like a round plastic holder
10-17-2012, 08:45 PM
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2008 C300
How have you solved the problem?
This thing has happened to me a few days ago.
Coolant warning light come "ON" and "OFF", but the light is not always "On" and "Off". It might be ON today and disappear after a few min.. It may happen tomorrow again for 10 min. or so or may happen after a few days.
When the warning light is "ON", the coolant temperature is unstable, going lower than 80 sometimes or going higher than 100.
I brought my car in, but the diagnosis has not been completed.
They initially said the software update might resolve the problem when I dropped it off, but they just informed me that mine has the latest software and there is no software to update..
This thing has happened to me a few days ago.
Coolant warning light come "ON" and "OFF", but the light is not always "On" and "Off". It might be ON today and disappear after a few min.. It may happen tomorrow again for 10 min. or so or may happen after a few days.
When the warning light is "ON", the coolant temperature is unstable, going lower than 80 sometimes or going higher than 100.
I brought my car in, but the diagnosis has not been completed.
They initially said the software update might resolve the problem when I dropped it off, but they just informed me that mine has the latest software and there is no software to update..
