2003 Mercedes SL-Class Owner's Manual - Page 74

Safety and Security Driving safety systems The SBC brake servo assistance switches off automatically when you remove the key from the starter switch (after approximately two minutes) lock the vehicle (after approximately 20 seconds) Note on driving with SBC Following extended periods of only minor loads to your brake system, you should occasionally apply the brakes when traveling at high speeds. This improves the grip of the brake pads. Warning! After driving on wet or snow-covered roads, you should apply your brakes firmly before parking your vehicle. This produces heat which serves to dry the brake disks and help prevent corrosion. On long and steep grades, shift to a lower gear (gear range 1, 2, or 3) to prevent the brakes from overheating and to reduce brake wear. After hard braking, it is advisable to drive on for some time so that the air stream will cool down the brakes faster. Only Mercedes-Benz approved components (e.g. brake pads) should be installed on your vehicle. Brake pads not approved by Mercedes-Benz may impair the safety of your vehicle. Warning! G Have brake pad replacement and other work on the SBC brake system carried out by qualified technicians only. Contact your Mercedes-Benz Center for further information. The SBC brake system must be deactivated prior to working on the system. High pressure is intermittently built up in the system as part of its automatic self-test. In addition, the system is automatically activated when the vehicle is unlocked by remote control, when the driver or passenger door is opened, when the key in the starter switch is turned to position 1, when the brake pedal is depressed or when the parking brake is released. Failure to deactivate the system prior to maintenance will cause brake pistons to extend and brake fluid to leak, which may result in injuries (contusions and acid burns). Extended brake pistons may also cause injury. G Be very careful not to endanger other road users when you apply the brakes. 74