← View Generic B1627 Guide
Severity: Medium
🚗
Vehicle-Specific Guide
This guide is customized for your 2018 BMW X5
B1627: B1627: Power Window Relay Circuit 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
⚠️
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 B1627 Mean on 2018 BMW X5?
The power window relay circuit has malfunctioned, preventing the windows from functioning properly.
⚠️
Symptoms
- • Windows won't roll up or down
- • or do so intermittently
- • with no warning lights on the dashboard.
🔍
Common Causes
- • Faulty power window relay
- • wiring issues
- • or a blown fuse.
🛠️
How to Fix B1627 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.
🔧
Need Maintenance Info for Your X5?
Get oil capacity, filter specs, and torque settings for your specific 2018 BMW X5.
View 2018 BMW X5 SpecsParts for 2018 BMW X5
Essential Tool
🔗
Related Diagnostic Codes
Other codes that may appear with B1627
B1625
Sequential Code
B1625: Climate Control Temperature Sensor Malfunction
Medium
B1626
Sequential Code
B1626: Door Locks Actuator Circuit Malfunction
Medium
B1628
Sequential Code
B1628: Seat Switch Circuit Malfunction
Medium
B1629
Sequential Code
B1629: Body Control Module (BCM) Malfunction - Lighting
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