B3A54

Active Aerodynamic Feature D Actuator Temperature Not Plausible

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$167–556 (est.)

Symptoms

Inoperative or incorrectly functioning active aerodynamics elements
A warning appears on the instrument panel
Reduced aerodynamic efficiency at high speeds

Causes

Actuator temperature sensor malfunction
Actuator overheating due to mechanical stress
Problems in the wiring harness (break, short circuit)
Malfunction of the active aerodynamics control unit
Actuator mechanism jamming

How to Fix

Check the wiring harness and contacts of the actuator
Measure the resistance of the temperature sensor
Conduct diagnostics of the actuator for mechanical damage
Reset the error and check the system operation
Replace a faulty actuator or control unit

Related codes

B3A55 B3A56 B3A53