← View Generic B1173 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2018 BMW X5

B1173: B1173: Turn Signal Bulb Out or Faulty

on 2018 BMW X5

Fix Cost

$20 - $50

Parts & Labor

Difficulty

3/5

1-2 hours

DIY Possible?

✅ Yes

Save money

Your Vehicle

2018 BMW

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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 B1173 Mean on 2018 BMW X5?

This code indicates a malfunction in the turn signal bulb circuit, which may be due to a faulty bulb, wiring issue, or a problem with the turn signal switch.

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Symptoms

• Inoperative turn signal
• flashing or dimming turn signal lights
• or a warning light on the dashboard.

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Common Causes

• Faulty turn signal bulb
• corroded or damaged wiring
• faulty turn signal switch
• or a blown fuse.

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How to Fix B1173 on 2018 BMW X5

1. Check the turn signal bulb and replace it if faulty. 2. Inspect and clean the wiring and connectors. 3. Check the turn signal switch and replace it if faulty. 4. Check the fuse and replace it if blown.

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Parts for 2018 BMW X5

Turn signal bulb Shop ↗ Wiring harness Shop ↗ Turn signal switch Shop ↗ Fuse Shop ↗

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Related Diagnostic Codes

Other codes that may appear with B1173

B1171 Sequential Code

💡 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