← View Generic B3930 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2018 BMW X5

B3930: B3930: Door Locks Malfunction

on 2018 BMW X5

Fix Cost

$100 - $300

Parts & Labor

Difficulty

3/5

1-2 hours

DIY Possible?

✅ Yes

Save money

Your Vehicle

2018 BMW

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Important for 2018 BMW X5 Owners

Before starting repairs, verify which engine your 2018 BMW X5 has. Check your VIN or engine code to ensure you order the correct parts.

📖 What Does B3930 Mean on 2018 BMW X5?

The B3930 code indicates a malfunction in the door lock system, which may cause the doors to lock or unlock unexpectedly, or fail to lock or unlock at all.

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Symptoms

• Doors lock or unlock unexpectedly
• failure to lock or unlock
• door ajar warning light on

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Common Causes

• Faulty door lock actuator
• wiring issue
• faulty door lock module
• faulty door switch

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How to Fix B3930 on 2018 BMW X5

1. Check door lock actuator for proper operation and replace if faulty. 2. Inspect wiring for damage or corrosion and repair if necessary. 3. Replace door lock module if faulty. 4. Check door switch for proper operation and replace if faulty.

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Parts for 2018 BMW X5

Door lock actuator Shop ↗ Wiring harness Shop ↗ Door lock module Shop ↗ Door switch Shop ↗

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Related Diagnostic Codes

Other codes that may appear with B3930

B3928 Sequential Code

💡 Why These Codes Are Related:

• Similar Issues: Same root cause or component failure
• Related Problems: Often occur together due to system interactions
• Sequential Codes: Progressive failure stages or multiple sensors
• Same System: Components within the same automotive system