← View Generic B0478 Guide
Severity: Medium
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Vehicle-Specific Guide
This guide is customized for your 2019 Ford F150 PICKUP
B0478: B0478: Body System Security Malfunction
on 2019 Ford F150 PICKUP
Fix Cost
$100 - $500
Parts & Labor
Difficulty
3/5
1-2 hours
DIY Possible?
❌ No
Pro recommended
Your Vehicle
2019 Ford
F150 PICKUP
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Important for 2019 Ford F150 PICKUP Owners
Before starting repairs, verify which engine your 2019 Ford F150 PICKUP has. Check your VIN or engine code to ensure you order the correct parts.
📖 What Does B0478 Mean on 2019 Ford F150 PICKUP?
This code indicates a malfunction in the vehicle's security system, which may cause issues with door locks, alarm, or immobilizer functions.
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Symptoms
- • Door locks not functioning
- • alarm not triggering
- • or vehicle will not start
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Common Causes
- • Faulty security module
- • wiring harness damage
- • or incorrect security system settings
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How to Fix B0478 on 2019 Ford F150 PICKUP
1. Check security system settings and reset if necessary. 2. Inspect wiring harness for damage and repair or replace as needed. 3. Replace faulty security module if found.
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Need Maintenance Info for Your F150 PICKUP?
Get oil capacity, filter specs, and torque settings for your specific 2019 Ford F150 PICKUP.
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Essential Tool
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Related Diagnostic Codes
Other codes that may appear with B0478
B0476
Sequential Code
B0476: Seat Switch Circuit Malfunction
Medium
B0477
Sequential Code
B0477: Exterior Lighting Malfunction
Medium
B0479
Sequential Code
B0479: Audio System Malfunction
Medium
B0480
Sequential Code
B0480: Airbag System Fault
High
💡 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