In the hydraulic back-up mode, the driver has braking power sufficient to stop the vehicle, although greater brake pedal pressure is required and the brake pedal travel will be noticeably longer.
On certain vehicles, the sensotronic brake control (sbc) system may prematurely shift to the hydraulic back-up function mode, due to deterioration of the wiring harness connection, or due to premature failure of the hydraulic pump.
Dealers will install a bracket and replacement ground wire to the sbc pump unit on all vehicles free of charge. Additionally dealers will inspect and replace the sbc pump unit in sl vehicles produced during a limited production period. The recall began on August 8, 2005. Owners may contact Mercedes-Benz at 1-800-367-6372.
