Rattles due to differential temperature changes from the AC vents. On hot or cold days when attempting to bring the interior of the car to normal the vents would crack.
TSB LI68.10-P-055925
Attempt to lube and felt interior trim Seat belt attachment point rattles and/squeaks. Dealer retightened seat belt. Did not fix problem will attempt to have it replaced under TSB LI91.40-P-057018 for belt height adjuster.
See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. To see how
frequently 2013 Mercedes-Benz GLK problems occur, check out our car reliability stats.