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Home/Cars/BMW/5 Series/F10/F11 (2010-2017)/my BMW 5 Series F10/F11 (2010-2017) fuel gauge is not working properly, how to fix?

my BMW 5 Series F10/F11 (2010-2017) fuel gauge is not working properly, how to fix?

BMW 5 Series F10/F11 (2010-2017)

Severity: mediumDifficulty: medium2-4 hours
3 min read
489 words

Problem Statement

## Problem Statement The fuel gauge on a BMW 5 Series F10/F11 (2010-2017) is not functioning correctly, leading to inaccurate fuel level readings.

Repair Time
2-4 hours

Safety Warnings

  • ⚠Safety Warnings:**
  • ⚠Allow the engine to cool before working near the fuel system.
  • ⚠Ensure proper ventilation when working with fuel components to avoid fire hazards.

Symptoms

  • •Fuel gauge needle remains at empty despite the tank being filled
  • •Intermittent fuel gauge readings
  • •Check engine light illuminated
  • •Erratic fuel level fluctuations while driving
  • •Warning messages related to fuel level on the dashboard

Diagnostic Steps

  1. 1Scan the vehicle's OBD-II system for any error codes related to the fuel system or fuel gauge.
  2. 2Inspect the fuel level sensor located in the fuel tank for damage or disconnection.
  3. 3Check the wiring and connectors leading to the fuel level sensor for corrosion or breaks.
  4. 4Test the fuel level sensor's resistance with a multimeter to ensure it is functioning within the specified range.
  5. 5Verify the operation of the instrument cluster by checking if other gauges are functioning properly.

Solution

Solution

1. Preparation

  • Gather necessary tools and parts.
  • Ensure the vehicle is parked on a level surface and the engine is off.
  • Disconnect the negative battery terminal to avoid electrical shorts.

2. Remove the Fuel Pump Assembly

  1. Access the Fuel Pump: Remove the rear seat cushion to access the fuel pump cover.
  2. Disconnect Electrical Connectors: Unplug the electrical connectors from the fuel pump assembly.
  3. Remove Fuel Lines: Carefully disconnect the fuel lines from the pump assembly, using a line disconnect tool if necessary.
  4. Unscrew Pump Assembly: Remove the screws or bolts securing the fuel pump assembly to the fuel tank and lift the assembly out.

3. Inspect and Replace Fuel Level Sensor

  1. Remove Level Sensor: Detach the fuel level sensor from the fuel pump assembly.
  2. Inspect Sensor: Check for signs of wear, corrosion, or damage. If defective, replace it with a new sensor.
  3. Install New Sensor: Secure the new fuel level sensor onto the pump assembly, ensuring it is properly seated.

4. Reassemble Fuel Pump Assembly

  1. Reinstall Pump Assembly: Place the fuel pump assembly back into the tank and secure it with screws or bolts.
  2. Reconnect Fuel Lines: Reattach the fuel lines securely to the pump assembly.
  3. Reconnect Electrical Connectors: Plug the electrical connectors back into the fuel pump assembly.

5. Reconnect Battery and Test

  1. Reconnect Battery: Reattach the negative battery terminal.
  2. Start Engine: Turn on the ignition and let the fuel system prime.
  3. Test Fuel Gauge: Check if the fuel gauge operates correctly after the repair.

Tools Required:

  • OBD-II scanner
  • Screwdriver set
  • Line disconnect tool
  • Multimeter
  • Torque wrench (if applicable)

Parts Required:

  • New fuel level sensor (specific to BMW F10/F11)
  • Fuel pump assembly gasket (if applicable)

Estimated Repair Time: 2-4 hours

Safety Warnings:

  • Allow the engine to cool before working near the fuel system.
  • Ensure proper ventilation when working with fuel components to avoid fire hazards.

Verification

After completing the repair, verify that the issue has been resolved:

  • Test the affected component to ensure it functions correctly
  • Check for any error codes or warning lights
  • Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

  • •Follow the manufacturer's recommended maintenance schedule
  • •Address warning signs early before they develop into major issues
  • •Use quality parts and fluids recommended for your vehicle
  • •Keep detailed records of all repairs and maintenance

Tools & Equipment Required

  • OBD-II scanner
  • Screwdriver set
  • Line disconnect tool
  • Multimeter
  • Torque wrench (if applicable)

Parts Required

  • New fuel level sensor (specific to BMW F10/F11)
  • Fuel pump assembly gasket (if applicable)

Additional Information

Repair Time

2-4 hours

Difficulty

medium

Severity

medium

Tools

5 items

Parts

2 items

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