← View Generic B3740 Guide Severity: Medium

🚗 Vehicle-Specific Guide

This guide is customized for your 2018 BMW X5

B3740: B3740: Seat Position Sensor Circuit 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

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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 B3740 Mean on 2018 BMW X5?

The seat position sensor circuit has malfunctioned, preventing the vehicle's computer from accurately detecting the seat's position.

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Symptoms

• Seat position sensor error message on the dashboard
• seat not moving properly
• or seat not adjusting correctly.

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Common Causes

• Faulty seat position sensor
• wiring issue
• or electrical connector problem.

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How to Fix B3740 on 2018 BMW X5

1. Disconnect the battery to reset the system. 2. Check and clean the seat position sensor and electrical connector. 3. Replace the faulty seat position sensor if necessary. 4. Reconnect the battery and test the seat function.

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Parts for 2018 BMW X5

Seat position sensor Shop ↗ Electrical connector Shop ↗

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Related Diagnostic Codes

Other codes that may appear with B3740

B3738 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