how to fix my BMW 5 Series F10/F11 (2010-2017) that won't start just clicks

BMW 5 Series F10/F11 (2010-2017)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

550 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 possible issues with th

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components to avoid shock or shorts.
•Allow the engine to cool before working on the starter to prevent burns.

Symptoms

•Engine does not turn over, only a clicking sound is heard
•Dashboard lights dim when the key is turned to the start position
•No engine cranking or turning of the starter motor
•Possible intermittent electrical issues (e.g., flickering lights)
•Battery warning light may illuminate

Diagnostic Steps

1
Check the battery voltage using a multimeter; it should read above 12.4 volts for a healthy battery.
2
Inspect battery terminals for corrosion or loose connections.
3
Test the starter relay by swapping it with another identical relay in the fuse box.
4
Use an OBD-II scanner to check for any stored fault codes related to the starting system.
5
Measure voltage at the starter motor while attempting to start the engine to determine if the starter is receiving power.

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

•Multimeter
•Wire brush
•Socket set

Parts Required

•New battery (if necessary)
•New starter motor (if necessary)
•Starter relay (if necessary)
•Fuses (if necessary)

Related Faults

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Diagnostic Steps

1
Check the battery voltage using a multimeter; it should read above 12.4 volts for a healthy battery.
2
Inspect battery terminals for corrosion or loose connections.
3
Test the starter relay by swapping it with another identical relay in the fuse box.
4
Use an OBD-II scanner to check for any stored fault codes related to the starting system.
5
Measure voltage at the starter motor while attempting to start the engine to determine if the starter is receiving power.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the negative battery terminal to prevent electrical shorts.
Ensure the vehicle is in park (automatic) or neutral (manual).

2. Battery Inspection and Replacement

Sub-steps:
1. Remove the battery cover if equipped.
2. Clean battery terminals using a wire brush if corrosion is present.
3. Check battery connections; tighten any loose connections.
4. If the battery voltage is below 12.4 volts, replace the battery with a new one.
Tools Required:
- Multimeter
- Wire brush
- Socket set

3. Starter Motor Inspection

Sub-steps:
1. Locate the starter motor (usually located near the transmission).
2. Inspect the wiring harness connected to the starter for damage or loose connections.
3. If necessary, remove the starter motor by disconnecting the electrical connections and unbolting it from the engine.
4. Test the starter motor by applying direct power from a battery to see if it engages.
5. Replace the starter motor if it fails to engage.
Tools Required:
- Socket set
- Wrench set

4. Relay and Fuse Check

Sub-steps:
1. Access the fuse box and locate the starter relay and relevant fuses.
2. Inspect the fuses for continuity and replace any blown fuses.
3. If the starter relay was not swapped earlier, replace it with a new one.
Tools Required:
- Fuse puller
- Multimeter (for continuity testing)