← View Generic B0104 Guide Severity: High
🚗 Vehicle-Specific Guide

This guide is customized for your 2018 BMW X5

B0104: B0104: Airbag System Malfunction

on 2018 BMW X5

Fix Cost
$200 - $500
Parts & Labor
Difficulty
4/5
1-2 hours
DIY Possible?
❌ No
Pro recommended
Your Vehicle
2018 BMW
X5
⚠️

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 B0104 Mean on 2018 BMW X5?

The airbag system has malfunctioned, preventing the airbags from deploying in the event of a crash. This code is often caused by a faulty airbag sensor or wiring issue.
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Symptoms

  • • Airbag warning light on dashboard
  • • airbag system not deploying in a crash
  • • unusual sounds or vibrations from the airbag module
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Common Causes

  • • Faulty airbag sensor
  • • wiring issue
  • • blown fuse
  • • faulty airbag module
  • • faulty seatbelt pretensioner
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How to Fix B0104 on 2018 BMW X5

1. Check the airbag sensor and wiring for damage or corrosion. 2. Replace the airbag sensor if damaged. 3. Check the airbag module for any signs of physical damage. 4. Replace the airbag module if damaged. 5. Check the seatbelt pretensioner for any signs of physical damage. 6. Replace the seatbelt pretensioner if damaged.

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Parts for 2018 BMW X5

Airbag sensor Shop ↗ Airbag module Shop ↗ Seatbelt pretensioner Shop ↗ Wiring harness Shop ↗

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OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with B0104

B0102 Sequential Code

B0102: Immobilizer System Malfunction

Medium
B0103 Sequential Code

B0103: Audio System Malfunction

Medium
B0105 Sequential Code

B0105: Climate Control Blower Motor Fault

Medium
B0106 Sequential Code

B0106: Door Locks Malfunction

Medium

💡 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