← View Generic B0374 Guide
Severity: Medium
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Vehicle-Specific Guide
This guide is customized for your 2018 BMW X5
B0374: B0374: Immobilizer System Malfunction
on 2018 BMW X5
Fix Cost
$50 - $200
Parts & Labor
Difficulty
3/5
1-2 hours
DIY Possible?
❌ No
Pro recommended
Your Vehicle
2018 BMW
X5
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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 B0374 Mean on 2018 BMW X5?
The immobilizer system, which prevents the engine from starting without the correct key, has malfunctioned. This code indicates a problem with the immobilizer system's communication with the vehicle's computer.
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Symptoms
- • Engine won't start
- • key fob won't work
- • or alarm system won't disarm
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Common Causes
- • Faulty immobilizer module
- • bad key fob battery
- • or incorrect key fob programming
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How to Fix B0374 on 2018 BMW X5
1. Check the key fob battery and replace it if necessary. 2. Check the immobilizer module for any signs of physical damage or corrosion. 3. If the problem persists, reprogram the key fob or replace the immobilizer module.
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Need Maintenance Info for Your X5?
Get oil capacity, filter specs, and torque settings for your specific 2018 BMW X5.
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Related Diagnostic Codes
Other codes that may appear with B0374
B0372
Sequential Code
B0372: Seat Position Sensor Circuit Malfunction
Medium
B0373
Sequential Code
B0373: Illumination Control Module (ICM) Malfunction
Medium
B0375
Sequential Code
B0375: Audio System Fault
Medium
B0376
Sequential Code
B0376: Airbag System 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