ESP Driving and System Test

The ESP driving test is used to test the plausibility of the signals from the sensor for transverse acceleration, yaw sensor, and pressure sensor.

Road test vehicle
Some DTC's are only recognized by the On Board Diagnostic (OBD)while the vehicle is moving. You can check the entire system during a road test. During road test, drive at a speed of at least 60 km/h for 30 seconds. Check traffic conditions and perform an ABS regulated braking when appropriate. You will feel a pulsing in the brake pedal indicating the system is active.

Note: Once the ESP driving test has been initiated, it cannot be aborted and must be performed completely. After exiting the diagnostic, the ABS/EDL and ASR/ESP lamps remain switched on in order to indicate that the test is active and that system function is not available yet. Warning, ABS and ESP not functioning!

WARNING: While system is in diagnostic, the ABS/ESP/EBD is not active. Driving the vehicle after On Board Diagnostic (OBD) has defected a malfunction presents the risk of accident. The brake system will only be partially functional. Because brake pressure at the rear wheels is no longer regulated vie Electronic Brake Distribution (EBD), the rear wheels tend to brake excessively. This causes file rear of the vehicle to break loose.
When the use of test equipment is required during road tests, test equipment must always be secured to the rear seat and operated from there by a second person. If test and measuring equipment is operated from the passenger seat, the person seated there could be injured in file event of an accident involving deployment of the passenger-side airbag.

- Connect VAS5051 tester or VAG1551 scan tool and select the address word 03 "Brake Electronics"





Indicated on display:
- Press buttons -0- and -4- to select function 04 "Basic Setting"





Indicated on display:
- Press -Q- button to confirm input.





Indicated on display:
- Press buttons -O-, -0-, and -3-. Press -Q- button to confirm input.





Indicated on display:
The ESP driving test is activated.
The ABS warning light -K47- and the traction control indicator light -K86- go on.
- Press buttons -0- and -6- to select "End Output" function 06. Press -Q- button to confirm input.





Indicated on display:
- Disconnect VAG 1551 scan tool.
- Start engine.
- Press the brake pedal hard (brake pressure higher than 35 bar) until the traction control indicator light -K86- turns off.

Note: This completes the adjustment with the engine not running

- Perform the road test:

WARNING:
- Always follow the rules of the road and pay attention to traffic conditions as your first priority.
- Make a right or left turn. Then reverse the direction and continue driving until the ABS/EDL lamp turns off.

Note: While driving around the curves, a yaw rate of around 10 1 /Sec must be obtained. A curve with a radius of 10 to 12 m and a speed of 15 to 20 km/h for around 4 sec. fulfills this requirement.

The ABS warning light -K47- must go out. This completes the ESP driving test and the system is OK.
If the ABS/ESP warning light -K47- remains lit, the test is not OK (system locked). Check DTC memory.
If the ABS warning light -K47- does not go out, the ESP driving test was not performed properly.
If the ABS warning light -K47- does not go out, and the traction control indicator light -K86- lights up again, there are malfunctions in the system; Check DTC memory

Note: If the ESP driving test was interrupted, e.g.: by switching off the ignition, the entire test must be repeated.