U0523

Symptoms

• Door window regulator A does not work
• The window regulator operates erratically
• The fault indicator lights up
• The error is stored in the BCM memory

Causes

• Window motor malfunction
• Open or short circuit in control circuit
• Oxidation of contacts in connectors
• Problems with the CAN bus
• Body control unit malfunctions

How to Fix

1. Check the power and ground of the window lift motor
2. Inspect connectors and wiring for damage
3. Test the window lift motor
4. Check the CAN bus for errors
5. If necessary, replace the window motor

Related codes

Error U0523 by Vehicle Brand