B396C

Symptoms

• The rear door does not respond to mode changes
• The door does not open all the way or is too high
• Rear door fault light is on
• The mode switch does not change the behavior of the door
• Error code persists after reset

Causes

• Rear door mode switch malfunction
• Short circuit or open circuit in the switch circuit
• Moisture getting into the switch
• Switch connector oxidation
• Rear door control module software failure

How to Fix

1. Read error codes and check data in real time when switching modes
2. Inspect the switch for physical damage
3. Measure switch signals in each position
4. Clean or replace the mode switch
5. Check rear door module software update
6. Reset codes and check operation

Related codes

Error B396C by Vehicle Brand