B3A37

Active Aerodynamic Feature A Actuator Temperature Too High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$22–167 (est.)

Symptoms

Error message on the dashboard
Reduced efficiency of active aerodynamics
Possible problems with engine cooling at high speeds

Causes

Actuator overload
Problems in the wiring harness (short circuit, open circuit)
Malfunction of the active aerodynamics control unit
Contamination or mechanical obstructions in the system

How to Fix

Check wiring harness and connectors for damage
Measure resistance and voltage on the actuator
Test the system operation using a diagnostic scanner
If necessary, replace the actuator or control unit

Related codes

B3A38 B3A39 U0121