B3A48

Active Aerodynamic Feature C Actuator Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

Symptoms

Check Engine Signal on Dashboard
Incorrect operation of active aerodynamic elements
Limitation of system functionality (for example, fixed spoiler position)
Error message in the multimedia system

Causes

Actuator mechanism jammed
Open circuit or short circuit in the wiring harness
Drive motor malfunction
Problems with the position sensor
Oxidation of contacts
Failures in the control unit software

How to Fix

Read complete error codes and freeze frame data
Visual inspection of active aerodynamics mechanisms
Check the condition of the wiring harness and contacts
Check power supply and control signals on the actuator
Forcefully test the operation of the mechanism through a scanner
If necessary, replace the actuator or repair the harness
Adapt the system after repair

Related codes

B3A47 B3A49 U0121