Remove/install rear brake cable at wheel carrier - AR42.20-P-0525-03SX

Removal 

1. Press toggle (1a) of brake cable (1) upwards against the spring (2) in the expanding lock (3) using a screwdriver.
2. Pull brake cable (1) out of wheel carrier (4).

   Mounting 

3. Insert brake cable (1) into the wheel carrier (4) until the toggle (1a) latches into the expanding lock (3).

Fig 1: Identifying Wheel Carrier Rear Brake Cable Components

Courtesy of MERCEDES-BENZ USA