OBD Guide

B3A35

Active Aerodynamic Feature A Actuator Performance

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$111–333 (est.)

Symptoms

  • Reduced efficiency of active aerodynamics
  • Incorrect operation of moving aerodynamic elements
  • Malfunction indicator light comes on

Causes

  • Electromechanical drive malfunction
  • Wiring harness damage
  • Problems with the control unit
  • Mechanical damage to the moving element
  • Corroded or dirty contacts

How to Fix

  1. Diagnose the actuator using an OBD-II scanner
  2. Check the wiring harness for damage or corrosion.
  3. Check the operation of the electromechanical drive
  4. Check the control unit for errors
  5. If necessary, replace faulty components

Related codes

Error B3A35 by Vehicle Brand