A new parameter set is required for the above-mentioned vehicles. After changing the parameter, the power-steering pump provides the full delivery rate even with engaged parking brake.
Change the parameter as follows using the vehicle diagnosis system:
Perform quick test.
Call up the "CLCS - Level control system (A26)" menu.
Select "Adaptations" tab.
Expand "Parameterization" menu.
Select "Power-steering pump".
Set parameter 1101 "Power-steering pump properties" to "Default PID110 eVDP Feature".
XENTRY update 03/2017 and add-on 7210 must be installed for the update. As of update 05/2017, the add-on will be included with the regular release.