Dealer replaced mine (on the 300E) a couple of years ago at the tune of $2800!!! Fortunately, the extended warranty I bought kicked in, so I was out about $250 instead.
2009 ML350 (84K) - Family vehicle
2001 CLK430 Cabriolet (71K) - Wife's car
2005 BMW 645CI (124K) - My daily driver
2012 Mustang V6 (60K) - Daughter's car