This guide is customized for your 2018 BMW X5
B0397: B0397: Malfunction of Front Fog Light
on 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 B0397 Mean on 2018 BMW X5?
Symptoms
- • Fog light does not turn on
- • or turns on intermittently
- • and may also trigger the 'check engine' light on the dashboard.
Common Causes
- • Faulty fog light switch
- • worn-out or damaged wiring
- • faulty fog light bulb
- • or a problem with the fog light relay.
How to Fix B0397 on 2018 BMW X5
1. Check the fog light switch for any signs of wear or damage. Clean or replace it if necessary. 2. Inspect the wiring and connectors for any signs of damage or corrosion. Repair or replace as needed. 3. Check the fog light bulb and replace it if it's worn out or damaged. 4. Check the fog light relay and replace it if it's faulty.
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Related Diagnostic Codes
Other codes that may appear with B0397
B0395: Power Window Relay Circuit Malfunction
B0396: Seat Position Sensor Malfunction
B0398: Body System Security Malfunction
B0399: Audio System Malfunction
💡 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