Temp Sensor W221
Thread Starter
Member
Joined: Jul 2017
Posts: 145
Likes: 11
2010 S550
Temp Sensor W221
Hello All!
I'm new to the forum and just recently purchased my first Benz 2010 S550! Having an issue with the (outside) ambient temperature sensor. Received a code P009a which indicates the sensor is faulty. I am having a difficult time locating it. Any assistance is much appreciated.
I'm new to the forum and just recently purchased my first Benz 2010 S550! Having an issue with the (outside) ambient temperature sensor. Received a code P009a which indicates the sensor is faulty. I am having a difficult time locating it. Any assistance is much appreciated.
Thread Starter
Member
Joined: Jul 2017
Posts: 145
Likes: 11
2010 S550
MBWorld Fanatic!
Joined: Dec 2004
Posts: 4,268
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correct. the front grille needs to be removed to get access to the sensor. doing so might break some of the plastic clips holding it in place- especially if they are weather-worn. also dont rough handle the the sensor as it is very fragile.
Member
Joined: Dec 2016
Posts: 130
Likes: 17
From: SO CAL
2008 S550, 2004 G500, 2020 Cayenne
I have 08 and I'm not sure if it's different than 2010, but you don't need to remove the front grille on 08. The sensor is right there once you remove the front splash shield.
Thread Starter
Member
Joined: Jul 2017
Posts: 145
Likes: 11
2010 S550
Temp sensor
To confirm the ambient/outside temp sensor to reach it the guard plate beneath the front bumper/grill needed to be removed. Mine had fell off and was throwing a check engine light on.
