Except E420 & Vehicles Without Electronic Stability Program ESP) (Except SLK230)
- If vehicle is equipped with Acceleration Slip Regulation (ASR), turn ignition off. Remove cover on hydraulic unit. On all vehicles, remove cap from brake fluid reservoir.
- Connect pressure bleeding equipment according to equipment manufacturer's instructions and pressurize system to 29 psi (2 kg/cm2 ). Connect Hand-Held Tester (WE58.40-P-1001-06A) to data link connector. Caliper bleeding sequence is RR, LR, RF and LF. Bleed approximately 1/10th of a quart of brake fluid from each brake caliper.
- Enter brake bleeding procedure on hand-held tester and following instructions on tester display. After completing bleeding procedure, brake fluid MUST flow through the return line into brake fluid reservoir without foam or bubbles.
- If foam or bubble are present, repeat bleeding procedure after waiting for 2 minutes. If necessary, check connections and repair as necessary. Disconnect pressure bleeding equipment. Fill brake fluid reservoir to proper level.