OBD Guide

B2101

Head Rest Switch Circuit Failure

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Headrest adjustment does not work
  • The security system malfunction indicator is on
  • The headrest is fixed in one position

Causes

  • Open or short circuit in wiring harness
  • Switch contact corrosion
  • Headrest switch malfunction
  • Problems with the security control unit
  • Blown fuse

How to Fix

  1. Check the integrity of the wiring harness
  2. Clean switch contacts
  3. Replace the headrest switch if necessary
  4. Check and replace fuses
  5. Flash the control unit if necessary

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