← View Generic B1347 Guide
Severity: Medium
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Vehicle-Specific Guide
This guide is customized for your 2018 BMW X5
B1347: B1347: Power Window Relay Circuit Malfunction
on 2018 BMW X5
Fix Cost
$50 - $150
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 B1347 Mean on 2018 BMW X5?
The power window relay circuit has malfunctioned, preventing the windows from functioning properly.
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Symptoms
- • Windows won't roll up or down
- • or do so intermittently
- • with no warning lights on the dashboard.
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Common Causes
- • Faulty power window relay
- • wiring issues
- • or a blown fuse.
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How to Fix B1347 on 2018 BMW X5
1. Check the fuse box for a blown fuse and replace it if necessary. 2. Inspect the wiring harness for damage or corrosion and repair or replace as needed. 3. Test the power window relay and replace it if faulty.
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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 B1347
B1345
Sequential Code
B1345: Climate Control Actuator Malfunction
Medium
B1346
Sequential Code
B1346: Door Locks Actuator Circuit Malfunction
Medium
B1348
Sequential Code
B1348: Seat Switch Circuit Malfunction
Medium
B1349
Sequential Code
B1349: Low Beam Headlight Relay Circuit 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