Hello, I am a newbie and hope I am posting in the right forum.
I have a 2009 C300 sport. The check engine light was on so I took it to the dealer and they said the secondary air pump and relay needed to be changed. They wanted $1800 for this work. I sourced a new secondary air pump and changed it quite easily. My problem is that I do not know which relay controls the secondary air pump. Any one able to help?
I have a 2009 C300 sport. The check engine light was on so I took it to the dealer and they said the secondary air pump and relay needed to be changed. They wanted $1800 for this work. I sourced a new secondary air pump and changed it quite easily. My problem is that I do not know which relay controls the secondary air pump. Any one able to help?
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