← View Generic B3746 Guide
Severity: Medium
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Vehicle-Specific Guide
This guide is customized for your 2018 BMW X5
B3746: B3746: Door Locks Actuator Malfunction
on 2018 BMW X5
Fix Cost
$100 - $300
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 B3746 Mean on 2018 BMW X5?
The B3746 code indicates a malfunction in the door lock actuator, which prevents the doors from locking or unlocking properly.
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Symptoms
- • Doors won't lock or unlock
- • may be stuck in a locked or unlocked position
- • or may not respond to the unlock button.
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Common Causes
- • Faulty door lock actuator
- • wiring issue
- • or a problem with the door lock module.
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How to Fix B3746 on 2018 BMW X5
1. Disconnect the battery to reset the system. 2. Check and repair any wiring issues. 3. Replace the door lock actuator if faulty. 4. Update the door lock module software if necessary.
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Need Maintenance Info for Your X5?
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Related Diagnostic Codes
Other codes that may appear with B3746
B3744
Sequential Code
B3744: Airbag System Malfunction
High
B3745
Sequential Code
B3745: Climate Control Fan Motor Fault
Medium
B3747
Sequential Code
B3747: Power Window Regulator Malfunction
Medium
B3748
Sequential Code
B3748: Seat Position Sensor 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