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2008-2015 AUDI R8
4.2L V8•AWD•AUTOMATIC•gas•BYH
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Repairs0Labor492Torque4225Fluid9DTC1133Battery1Maintenance0Recalls0
U0157low severityNetwork

Lost Communication with Digital Compass Module

on 2008-2015 Audi R8 4.2L V8 · AWD

What this code means

Cannot communicate with the digital compass module, often integrated in the rearview mirror or overhead console.

Symptoms

  • Compass display blank
  • Navigation heading unavailable
  • Compass reading stuck
  • Overhead console display off

Common causes

  • Compass module failure
  • Wiring issue
  • Module power loss
  • Fuse blown
  • Magnetic interference

Diagnostic steps

  1. Check compass module power
  2. Test wiring to module
  3. Check for magnetic interference sources
  4. Test module directly

Repair notes

Check mirror or overhead console wiring. Compass may need calibration after repair.

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