TIPS: CODE C249F, OPERATION TIME OF COMPONENT A7 or 3 IS EXCEEDED (SBC HYDRAULIC UNIT) The above tips that show internal fault of control unit, you have to replace the SBC control module and using W211 or R230 TOOL that can be easily repaired without replace the new control module. For Mercedes for Benz Safety Precautions had stated that before attempting to repair the brake system on its models W211 (E Class) and R230 (SL Class), the Sensotronic Brake Control (SBC) system must be deactivated first using its STAR-DIAGNOSIS tester. Deactivation of the SBC system is absolutely necessary before carrying out any maintenance work onthe brakes like changing of pads, discs and fluids because the system is under a pressure of 140 bars. Mechanics who perform brake services on these car models must have the proper tools to avoid the risk of injuries to themselves and damage to the brake system. Until the introduction of this inexpensive, convenient, light, safe and easy to use SBC tool is another alternative to the STAR-DIAGNOSIS tester when working on SBC system. It can perform the tasks equally well which is efficient and safety. After the repair had done, the SBC system can be activated and restore back its pressure. The memory is erased automatically. Quick, easy operations with LED indications. Safe to use Power ON when plugged into vehicle s OBDII diagnostic connector. Light, compact and very convenient. Stand alone unit. This SBC tool works on W211 (E-Class) and R230 (SL-Class) with SBC systems. SBC Tool Support Type: For BO- -SCH NR: 0 265 960 012 For BOS- CH NR: 0 265 960 013 For BOS- CH NR: 0 265 960 015 For BOS- CH NR: 0 265 960 018 For BO- SCH NR: 0 265 960 019 For BO- SCH NR: 0 265 960 020 For BOS- CH NR: 0 265 960 023 For BO- -SCH NR: 0 265 960 025 For BO- -SCHNR: 0 265 960 028 Colour: green Material: ABS Package Contents: 1 x W211 or