U0645

Symptoms

• Active spoiler does not work
• Check Engine light comes on
• Possible error messages on the dashboard
• Reduced aerodynamic performance at high speeds
• The car may go into emergency mode

Causes

• Open or short circuit in the spoiler module circuit
• Active spoiler module malfunction
• Problems with connectors or wiring harness
• Failures in ECU software
• Module power problems

How to Fix

1. Check the integrity of the power supply and grounding circuits of the module
2. Inspect connectors and wiring harness for damage
3. Check the functionality of the active spoiler module
4. Scan the system for other errors
5. Update ECU software if necessary
6. Repair only from an authorized dealer

Related codes

Error U0645 by Vehicle Brand