Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSAUDI1998A8 SEDAN (4D2) V8-3.7L (AEW)REPAIR AND DIAGNOSISBRAKES AND TRACTION CONTROLANTILOCK BRAKES / TRACTION CONTROL SYSTEMSTESTING AND INSPECTIONSCAN TOOL TESTING AND PROCEDURESBASIC SETTING (SCAN TOOL FUNCTION 04)DISPLAY GROUP 3: ACTIVATING ESP DRIVING TEST
1998 Audi A8 Sedan (4D2) V8-3.7L (AEW)
Display Group 3: Activating ESP Driving Test
1998 Audi A8 Sedan (4D2) V8-3.7L (AEW)SECTION Display Group 3: Activating ESP Driving Test
Display group 3: Activating ESP driving 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.
The ESP driving test should be carried out after any components of the ESP system are removed or replaced.
- Connect the VAG1551 Scan Tool and select the address word 03 "Brake Electronics".
Indicated on display
- Press buttons -0- and -4- to select "Basic Setting" function 04.
Indicated on display
- Press the -Q- button to confirm input.
Indicated on display
- Press buttons -0-, -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.
This completes the adjustment with the engine not running
- Perform the following test drive:
^ Drive around a right (left) hand curve and then around a left (right) hand curve.
- The ABS warning light -K47- must go out. This completes the ESP driving test and the system is OK.
Notes:
^ Always follow the rules of the road and pay attention to traffic conditions.
^ While driving around the curves, a yaw rate of around 10 /sec must be attained. A curve with a radius of 10 - 12 m and a speed of 15 - 20 km/h for around 4 sec. fulfills this requirement. The test drive must not require the use of ESP, ASR, EDL, or ABS. Other maneuvers required while driving around the curves do not influence the test.
- If the ABS warning light K47- does not go out, the ESP driving test was not carried out correctly.
- If the ABS warning light K47- does not go out and the traction control indicator light -K86- comes back on, there are malfunctions in the system; Read DTC memory.
Note: If the ESP driving test was interrupted, by switching off the ignition, for example, you must repeat the entire 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.
The ESP driving test should be carried out after any components of the ESP system are removed or replaced.
- Connect the VAG1551 Scan Tool and select the address word 03 "Brake Electronics".
Indicated on display
- Press buttons -0- and -4- to select "Basic Setting" function 04.
Indicated on display
- Press the -Q- button to confirm input.
Indicated on display
- Press buttons -0-, -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.
This completes the adjustment with the engine not running
- Perform the following test drive:
^ Drive around a right (left) hand curve and then around a left (right) hand curve.
- The ABS warning light -K47- must go out. This completes the ESP driving test and the system is OK.
Notes:
^ Always follow the rules of the road and pay attention to traffic conditions.
^ While driving around the curves, a yaw rate of around 10 /sec must be attained. A curve with a radius of 10 - 12 m and a speed of 15 - 20 km/h for around 4 sec. fulfills this requirement. The test drive must not require the use of ESP, ASR, EDL, or ABS. Other maneuvers required while driving around the curves do not influence the test.
- If the ABS warning light K47- does not go out, the ESP driving test was not carried out correctly.
- If the ABS warning light K47- does not go out and the traction control indicator light -K86- comes back on, there are malfunctions in the system; Read DTC memory.
Note: If the ESP driving test was interrupted, by switching off the ignition, for example, you must repeat the entire test.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.