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 MANUALSAUDI2005A4 QUATTRO, 4D SEDAN, 3.2 GREPAIR AND DIAGNOSISENGINE PERFORMANCETUNE-UP3.2L - GENERIC SCAN TOOL, ENGINE CODE: BKHST - GENERIC SCAN TOOLDIAGNOSTIC MODESDIAGNOSTIC MODE 04: RESET/DELETE DIAGNOSTIC DATA
2005 Audi A4 Quattro, 4D Sedan, 3.2 G
Diagnostic Mode 04: Reset/delete Diagnostic Data
2005 Audi A4 Quattro, 4D Sedan, 3.2 GSECTION Diagnostic Mode 04: Reset/delete Diagnostic Data
Diagnostic Mode 04 is used to reset or delete the following stored information:
- All emission related malfunctions in the DTC memory.
- The operating conditions at which a malfunction was stored will be reset.
- All adaptation values.
- The test results of all diagnostic functions.
Procedure
- Connect the diagnostic tester.
- Switch the ignition to the "ON" position.
- Select "Diagnostic Mode 03: Interrogating fault memory ".
- Then select "Mode 4: Reset/delete diagnostic data".
The diagnostic tester will display: "Diagnostic data are being erased".
- Switch the ignition off.
- End of diagnosis.
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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.