I just wanted to let you know that Mercedes Benz is now covering the SBC pump for 10 years unlimited milage for those of you with issues with the SBC pump. 2003-2007 E, SL, CL, CLS. They time out or require replacement after so many years or miles and they are now being covered. you might get a display in the cluster saying "Service Brake visit workshop" I've seen a few posts in the past with people with this complaint and were upset with the cost of repairs. so if you have any issues call the dealer to see if it is covered.