OBD Guide
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B1539

Mirror Driver Switch Assembly Circuit Failure

B1539 is an OBD-II diagnostic trouble code meaning: Mirror Driver Switch Assembly Circuit Failure. Common causes: broken wires in the switch circuit, short circuit. Estimated repair cost: $6–56.

Severity
✅ Low
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$6–56 (est.)

Symptoms

  • Inability to adjust mirrors
  • Mirror adjustment buttons do not work
  • Mirrors do not respond to switch

Causes

  • Broken wires in the switch circuit
  • Short circuit
  • Mirror switch malfunction
  • Wiring harness damage
  • Contact corrosion

How to Fix

  1. Check the integrity of the wires in the switch circuit
  2. Check contacts for corrosion
  3. Replace the mirror switch if necessary
  4. Check wiring harness for damage
  5. Clean or replace connectors if necessary

Related codes

B1540B1541

FAQ

What does the B1539 code mean?

B1539 is an OBD-II diagnostic trouble code that indicates: Mirror Driver Switch Assembly Circuit Failure

What causes a B1539 error code?

The most common causes of B1539 include: Broken wires in the switch circuit; Short circuit; Mirror switch malfunction; Wiring harness damage.

How do I fix a B1539 diagnostic trouble code?

To fix B1539: Check the integrity of the wires in the switch circuit. Check contacts for corrosion. Replace the mirror switch if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1539?

Do not drive — repair immediately

How much does it cost to fix B1539?

The estimated repair cost for B1539 is $6–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat