If vehicles are not routinely serviced and have extremely high mileage combined with a high number of brake actuations, or a high brake actuation frequency, the pump motor of the sbc may run out of permissible tolerances, thereby triggering the hydraulic function mode.

Service Brakes, Hydraulic

Date Announced
JUN 22, 2004
Vehicles Affected
143,387
Mercedes-Benz Recall #
2004050014
NHTSA Campaign #
04V296000
Summary
On certain vehicles, the electronic monitoring system of the sensotronic brake control (sbc) is designed to monitor the pressure gradient within the high pressure line of the brake system. If an unacceptable pressure gradient is detected, the system will switch, as it is designed to do, into the hydraulic function mode.
Actions
Dealers will inspect the sbc hydraulic unit, replacing it if necessary. The recall began on October 21M 2004. Owners should contact Mercedes-Benz at 1-800-367-6372.
Documents (13)