ESP, checking via road test

The ESP road test serves to check the plausibility of the signals from the lateral acceleration sender, rotation rate sender and pressure sender.

The ESP road test should always be carried out after removing or replacing any parts of the ESP system.

NOTE: The ESP road test can only be performed on vehicles with control module No. 8D0 407 389 D / 8D0 407 389 E. It is not possible to cancel the ESP road test after it has been started. The complete test procedure must be performed.

Connect VAS 5051 vehicle diagnostic, testing and information system or VAG 1551 scan tool and select address word 03 for "Brake electronics". See VAG 1551 SCAN TOOL, CONNECTING AND ENTERING ADDRESS WORD .

Indicated on display

Fig 1: VAG 1551 Scan Tool Display - Select Function XX

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Press buttons -0- and -4- to select function "Basic setting".

Indicated on display:

Fig 2: VAG 1551 Scan Tool Display - 04 - Basic Setting Block

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Press -Q- button to confirm input.

Indicated on display:

Fig 3: VAG 1551 Scan Tool Display - Enter Display Group Number XXX

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Press buttons -0-, -0- and -3-.
Press -Q- button to confirm input.

Indicated on display:

Fig 4: VAG 1551 Scan Tool Display - System Test Activated

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NOTE:

The ESP road test is activated.
The ABS warning light -K47- and traction control indicator light -K86- will come on.

Press buttons -0- and -6- for the function "End Output" and confirm entry with the -Q- button.

Indicated on display

Fig 5: VAG 1551 Scan Tool Display - Select Function XX

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Disconnect VAG 1551 scan tool.
Start engine.
Press brake pedal firmly (brake pressure higher than 35 bar) until traction control indicator light -K86- goes out.

NOTE: This completes calibration in the stationary condition.

Perform the following road test:

NOTE: Please drive according to traffic conditions and remember that road safety must be given first priority at all times.

Drive the vehicle through a right turn, then a left turn (or vice versa).

NOTE: A rotation rate (turning rate) of approx. 10° per second must be reached when driving the vehicle through the left and right turns during the test. This can be done, for instance, by driving through a turn with a radius of 10 to 12 meters at a speed of 15 to 20 km/h for about 4 seconds. The vehicle must be driven in such a way that the ESP, ASR, EDL and ABS functions are not activated. If other maneuvers are necessary between the two required turns because of traffic conditions, this will have no influence on the result of the ESP road test.

The ABS warning light -K47- should now go out. The ESP road test is now completed, and the system is OK.

If the ABS warning light -K47- does not go out, this means the ESP road test has not been performed properly.

If the ABS warning light -K47- does not go out and the traction control indicator light -K86- comes on again, this means there is a malfunction in the system; Check DTC Memory. See ESP DIAGNOSTIC TROUBLE CODE (DTC) MEMORY, CHECKING .

NOTE: If the ESP road test is interrupted (for instance by switching off the ignition) it will be necessary to repeat the complete test procedure.