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2004-2006 AUDI A8
4.2L V8•AWD•AUTOMATIC•gas•BAS
3 active safety recalls on this vehicle — view recalls
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Repairs0Labor488Torque2164Fluid10DTC1049Battery1Maintenance0Recalls3
U0127high severityNetwork

Lost Communication with Parking Brake Control Module

on 2004-2006 Audi A8 4.2L V8 · AWD

What this code means

Cannot communicate with the electronic parking brake module.

Symptoms

  • Parking brake warning light
  • Electronic parking brake inoperative
  • Brake warning message
  • Cannot release parking brake
  • Hill hold not working

Common causes

  • EPB module failure
  • CAN bus wiring
  • Module power loss
  • Fuse blown
  • EPB actuator failure

Diagnostic steps

  1. Check EPB module fuse
  2. Test module power and ground
  3. Check CAN wiring
  4. Try manual EPB release procedure
  5. Test EPB actuator motors

Repair notes

If parking brake is stuck engaged, use manual release procedure first. Check fuses.

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🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Mechanic · 20+ years. Spot an error? Use the Help link above — a human reads every report.
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