B3A55

Active Aerodynamic Feature D Actuator Temperature Too High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

Symptoms

Inoperative active aerodynamic element
Error message on the instrument panel
Reduced aerodynamic efficiency at high speeds

Causes

Mechanical jamming of the drive or moving parts
Drive motor malfunction
Problems with the wiring harness or connectors
Malfunction of the active aerodynamics control module
Long-term operation under increased loads

How to Fix

Visual inspection of the active aerodynamic element for mechanical damage
Checking the free movement of the mechanism manually
Diagnostics of drive motor winding resistance
Checking the integrity of the wiring harness and contacts
Scan the control module for additional errors
Testing the system after troubleshooting

Related codes

B3A50 B3A51 B3A52 B3A53 B3A54