I would take a pic for you guys but my dad has the memory stick so i can only give you a rough estimate right now. It's by the passenger side near the front middle of the car. So front rightish middle of the car.

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Own:
2013 C300 4matic
2009 C300 4matic

Owned:
2001 E320 Sport
1992 500E
1989 300SEL