Electronic Stability Program (ESP)

All work which concerns the electronic accelerator (EA) is described in Powertrain Management.

Handling ESP Parts On Vehicles Following An Accident
If due to the extent of the damage to the vehicle or the position and external appearance of the hydraulic unit after the accident, it can be seen that the hydraulic unit has received a heavy blow, it is to be replaced.
Indications of this are for example:
- Hydraulic lines kinked
- Connections at hydraulic unit leaking
- Electric cables or plug connections damaged
- Metal block of hydraulic unit shows signs of damage
- Hydraulic unit has sprung out of the mounting and cannot just be installed again
If this does not apply, the system must nevertheless be subjected to a thorough function check. The solenoid valves and pump must be checked using the corresponding test steps in the Diagnosis Manual.

Bleeding
The brake system is bled or the brake fluid is changed as on vehicles with ABS. Special or ETS/ESP bleeding is not required.

Using Roller Dynamometers
Brake Test Bench
- Testing the parking brake Ignition OFF otherwise ETS/ESP control

Function Test Bench Or Chassis Dynamometer And Speedo Testing
- Only possible on 2-axle roller dynamometers
- If Vehicle has permanent all-wheel drive. 3 differentia: gears are used as differentals which may be damaged by the extent of the differance in speed and above all by prolonged differences in speed.