Not really malfunction..just a head ache!!!!Just wanna give you guys a little warning regarding the MB wheel lock.... I had a flat tire yesterday, I loosen up the other 4 bolts except the MB lock bolt....having a hard time taking it off so I called AAA and same result they cant take it off. They (AAA) just put air on my tire and I went straight to the tire shop. Lesson learned dont tighten the MB wheel lock with that power tool (air compressor) coz thats the only thing can take it off, better tighten that up with the tire wrench...so imagine if your in the freeway or somewhere You'll be stuck there for some time. Have a good day!!!

 

As long as it is torqued down properly you are ok. Gorilla also makes a longer tire wrench to give you extra leverage and torque to loosen stubborn lugs.