← View Generic B1304 Guide Severity: High

🚗 Vehicle-Specific Guide

This guide is customized for your 2018 BMW X5

B1304: B1304: Airbag System Circuit Malfunction

on 2018 BMW X5

Fix Cost

$200 - $500

Parts & Labor

Difficulty

3/5

1-2 hours

DIY Possible?

❌ No

Pro recommended

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 B1304 Mean on 2018 BMW X5?

The airbag system has detected a malfunction in the circuit, which may prevent the airbags from deploying properly in the event of a crash.

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Symptoms

• Airbag warning light on dashboard
• airbag system not functioning
• crash sensor not triggering

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Common Causes

• Faulty crash sensor
• wiring issue
• airbag module malfunction
• faulty airbag sensor

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How to Fix B1304 on 2018 BMW X5

1. Check crash sensor for damage or corrosion, replace if necessary. 2. Inspect wiring for damage or corrosion, repair or replace if necessary. 3. Check airbag module for proper function, replace if necessary. 4. Check airbag sensor for proper function, replace if necessary.

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Parts for 2018 BMW X5

Crash sensor Shop ↗ Wiring harness Shop ↗ Airbag module Shop ↗ Airbag sensor Shop ↗

Essential Tool

Must Have

OBD2 Scanner

Read & clear codes on your 2018 BMW X5

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Related Diagnostic Codes

Other codes that may appear with B1304

B1302 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