Founding Member #2
Join Date: Jun 2006
Location: Orange County, CA
Vehicle: 2008 SLK 55
Mentioned: 76 Post(s)
Tagged: 0 Thread(s)
Quoted: 345 Post(s)
Thanked 3,141 Times in 2,269 Posts
The one at the rear is where the torx screw goes in to hold the 2 parts/halves together. The front one seems to function the same but fortunately is not used (except perhaps on the 2005 SLK 55), otherwise it's a big pain to remove the front one if there are two torx screws to each side marker. The middle hole looks like a breather hole but then there is enough open/air space around where the lamp holder twists into the sidemarker so the center third hole becomes redundant and can therefore be covered.
Moreover, the inserted aluminum foil discs are not air tight at the edges.
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Pewter(cubanitsilber metallic)/Beige, PIII package, Airscarf, Hands-Free Communication System, Lighting package; Designo Black Leather Cover on e-brake handle(Thank you Bill T), SmartTop v3.x, John's 3BFM, M113 AMG OEM air filters, Modified R170 ant., clear side-markers & front parking lamps w/error-free LEDs, chromed front & rear turn indicator lamps, steel mesh at battery bay cover & cabin air intake, sock-over-seatbelt buckles, belt-loop guide protectors, Lamin-X fog lamp protectors, bilateral rear fog lamps enabled, AMG crest on gear shift knob