← View Generic B0942 Guide
Severity: High
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Vehicle-Specific Guide
This guide is customized for your 2018 BMW X5
B0942: B0942: Immobilizer System 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
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 B0942 Mean on 2018 BMW X5?
The immobilizer system has malfunctioned, preventing the vehicle from starting or running. This code is often caused by a faulty immobilizer module, key fob, or wiring issue.
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Symptoms
- • Vehicle will not start
- • may show a 'security system malfunction' message on the dashboard
- • or may have a flashing immobilizer light.
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Common Causes
- • Faulty immobilizer module
- • key fob
- • wiring issue
- • low battery voltage
- • or incorrect key fob programming.
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How to Fix B0942 on 2018 BMW X5
1. Check the key fob battery level and replace if necessary. 2. Check the wiring harness for damage or corrosion and repair if necessary. 3. Replace the immobilizer module if faulty. 4. Re-program the key fob if necessary.
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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 B0942
B0940
Sequential Code
B0940: Seat Position Sensor Malfunction
Medium
B0941
Sequential Code
B0941: Body System Malfunction - Lighting
Medium
B0943
Sequential Code
B0943: Audio System Malfunction
Medium
B0944
Sequential Code
B0944: 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