W212 AMG Discuss the W212 AMG's such as the E63

Cooling fan always on and high speed

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Old Jun 11, 2023 | 06:37 PM
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Mercedes E63 2010
Cooling fan always on and high speed

Hi my E63 2010 fan always on even when I shut off the engine and on high speed always so what’s the problem ( and did anybody know where’s the cooling temperature sensor located please )
thanks all
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Old Jun 13, 2023 | 07:23 PM
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Originally Posted by laitho001
Hi my E63 2010 fan always on even when I shut off the engine and on high speed always so what’s the problem ( and did anybody know where’s the cooling temperature sensor located please )
thanks all
It is normal for the fan to stay on in high mode after shutting off engine for a couple to a few minutes when it’s pretty hot out or if you were doing some hard pulls prior.
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Old Jun 14, 2023 | 10:47 PM
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Mercedes E63 2010
Originally Posted by Vrodman
It is normal for the fan to stay on in high mode after shutting off engine for a couple to a few minutes when it’s pretty hot out or if you were doing some hard pulls prior.
nah it’s always on even when the engine is cold at cold start the fan turn on on high speed and never shut off till the battery dies
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Old Jun 15, 2023 | 05:53 AM
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coolant temp sensor (you're going to hate replacing this)

-or-

AC pressure switch



Both are scannable things once you get a decent scanner. not an AMG specific or even a Mercedes specific thing. It's just annoying car things from newer cars that run off 200+ sensors

Can't tell you which one it is cuz I can't tell you how you broke it. Gotta just read data to pinpoint what it is, aka grab a good scanner that reads make-specific data.
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