← View Generic B1174 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2018 BMW X5

B1174: B1174: Body System Security Malfunction

on 2018 BMW X5

Fix Cost

$100 - $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 B1174 Mean on 2018 BMW X5?

The B1174 code indicates a malfunction in the vehicle's security system, which can cause issues with door locks, alarm systems, and other security-related functions.

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Symptoms

• Door locks may not function properly
• alarm system may not activate
• or security lights may flash erratically.

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Common Causes

• Faulty security module
• wiring issues
• or a malfunctioning door lock actuator.

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How to Fix B1174 on 2018 BMW X5

1. Check the security module for any signs of physical damage or corrosion. Replace if necessary. 2. Inspect wiring harnesses for any signs of damage or corrosion. Repair or replace as needed. 3. Test door lock actuators to ensure proper function. Replace if faulty.

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Parts for 2018 BMW X5

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

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Related Diagnostic Codes

Other codes that may appear with B1174

B1172 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