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 MANUALSAUDI2001A6 AVANT QUATTROREPAIR AND DIAGNOSISGENERAL INFORMATIONCOMPUTER RELEARN PROCEDURESMAZDAIMMOBILIZER SYSTEM (626)PCM (CUSTOMER SUPPLIED 2 OR MORE VALID KEYS)
2001 Audi A6 Avant Quattro
PCM (Customer Supplied 2 Or More Valid Keys)
2001 Audi A6 Avant QuattroSECTION PCM (Customer Supplied 2 Or More Valid Keys)
NOTE:
When customer does not supply any valid keys, immobilizer unit must also be replaced.
- Cut new transponder equipped key(s), if necessary. Replace PCM. Using valid 1st key, turn ignition to ON position. SECURITY light should illuminate for 1-2 seconds. Turn valid key to LOCK position.
- Using valid 1st key, turn ignition to ON position, then to LOCK position 6 times. Ensure 6th turning is done within one second. Remove valid 1st key.
- Using valid 2nd key, turn ignition to ON position. SECURITY light should illuminate for 1-2 seconds. Turn valid 2nd key to LOCK position and remove key.
- Using valid 1st key, start engine. SECURITY light should illuminate for 1-2 seconds and engine should continue to run. Turn valid 1st key to LOCK position and remove key.
- Repeat step 4 with additional valid key or new 3rd key. Repeat step 4 with each new key, up to 8 keys total. Wait 30 seconds, program will quit automatically.
RENDER: 1.0x
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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.