my BMW 5 Series F10/F11 (2010-2017) won't start and just clicks

BMW 5 Series F10/F11 (2010-2017)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

541 words

Problem Statement

The BMW 5 Series F10/F11 (2010-2017) is experiencing a no-start condition characterized by a clicking sound when attempting to start the engine, indicating a potential issue with

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always disconnect the battery before working on electrical systems to avoid shocks or short circuits.

Symptoms

•Engine does not start, only a clicking noise is heard
•Battery warning light illuminated on the dashboard
•No dashboard lights or dimming lights when attempting to start
•Electrical components (e.g., radio, lights) may function intermittently
•Starter motor may be hot to the touch after repeated start attempts

Diagnostic Steps

1
Check the battery voltage using a multimeter; confirm it is above 12.4 volts.
2
Inspect battery terminals for corrosion or loose connections.
3
Test the battery with a load tester to ensure it can hold a charge under load.
4
Examine the starter relay and fuses for continuity and proper functioning.
5
Inspect the starter motor wiring for damage or loose connections.
6
Perform a voltage drop test on the starter circuit to assess resistance.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

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

•Disconnect the negative battery terminal to ensure safety while working on the electrical system.

Parts Required

•New battery (if needed)
•New starter motor (if needed)

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Symptoms

•Engine does not start, only a clicking noise is heard

•Battery warning light illuminated on the dashboard

•No dashboard lights or dimming lights when attempting to start

•Electrical components (e.g., radio, lights) may function intermittently

•Starter motor may be hot to the touch after repeated start attempts

Diagnostic Steps

1
Check the battery voltage using a multimeter; confirm it is above 12.4 volts.
2
Inspect battery terminals for corrosion or loose connections.
3
Test the battery with a load tester to ensure it can hold a charge under load.
4
Examine the starter relay and fuses for continuity and proper functioning.
5
Inspect the starter motor wiring for damage or loose connections.
6
Perform a voltage drop test on the starter circuit to assess resistance.

Solution

1. Preparation

Tools Required: OBD-II scanner, multimeter, socket set, torque wrench, battery terminal cleaner.
Disconnect the negative battery terminal to ensure safety while working on the electrical system.

2. Battery Replacement (if needed)

Inspect Battery: If voltage is below 12.4 volts or the battery fails the load test, replace it.
- Sub-steps:
  1. Remove the negative cable first, then the positive cable from the battery terminals.
  2. Remove any brackets or covers securing the battery in place.
  3. Lift the battery out carefully and place the new battery in the same position.
  4. Reconnect the positive cable first, then the negative cable.
  5. Ensure connections are tight and clean.

3. Starter Motor Replacement (if needed)

Remove and Replace Starter Motor: If the starter motor is determined to be faulty.
- Sub-steps:
  1. Disconnect the negative battery terminal (if not already done).
  2. Remove any engine covers or components obstructing access to the starter motor.
  3. Disconnect the electrical connectors from the starter motor.
  4. Remove the bolts securing the starter motor; typically 2-3 bolts.
  5. Take out the old starter motor and replace it with the new one.
  6. Reattach the bolts and ensure they are torqued to manufacturer specifications (usually around 30 Nm).
  7. Reconnect the electrical connectors to the starter motor.

4. Final Assembly

Reinstall any components or covers removed during the repair.
Reconnect the negative battery terminal.