I was following one earlier this afternoon, and I noticed on the rear quarters, just before the end, near the trunk lid, there are two chrome 'buttons' what are they?? If I had a camera I'd have snapped a photo...

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RIP: 80 300SD
RIP: 79 450SEL
2002 E430 4matic (212,000km)
2002 ML500 'sport'

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