my BMW 5 Series F10/F11 (2010-2017) won't start, it just clicks, what should I check?

BMW 5 Series F10/F11 (2010-2017)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

584 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.

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the negative terminal of the battery before working on electrical systems.

Symptoms

•Engine does not crank
•Clicking sound from the starter area
•Dashboard lights dim when attempting to start
•No response from the starter motor
•Battery warning light illuminated
•Electrical accessories may function intermittently

Diagnostic Steps

1
Check the battery voltage using a multimeter; it should be above 12.4 volts.
2
Inspect battery terminals for corrosion and ensure a tight connection.
3
Test the starter relay by swapping it with another identical relay in the fuse box.
4
Check the condition of the battery; perform a load test if necessary.
5
Inspect the wiring and connections to the starter motor for any visible damage or loose connections.
6
Verify that the gear selector is in "Park" or "Neutral" position if the vehicle has an automatic transmission.

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
•Socket set
•Torque wrench
•Battery terminal cleaner

Parts Required

•Replacement battery (if necessary)
•Starter motor (if necessary)

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Diagnostic Steps

1
Check the battery voltage using a multimeter; it should be above 12.4 volts.
2
Inspect battery terminals for corrosion and ensure a tight connection.
3
Test the starter relay by swapping it with another identical relay in the fuse box.
4
Check the condition of the battery; perform a load test if necessary.
5
Inspect the wiring and connections to the starter motor for any visible damage or loose connections.
6
Verify that the gear selector is in "Park" or "Neutral" position if the vehicle has an automatic transmission.

Solution

1. Preparation

Gather tools and parts before starting the repair.
Tools Required: Multimeter, socket set, torque wrench, battery terminal cleaner, replacement battery (if needed).
Safety Warnings: Disconnect the negative terminal of the battery before working on electrical systems.

2. Battery Inspection and Replacement

Remove Battery Terminals
- Using a socket set, loosen the negative terminal first, followed by the positive terminal.
- Carefully lift the battery out of the tray if it is being replaced.
Clean Battery Terminals
- Use a battery terminal cleaner to remove any corrosion from the terminals.
Check Battery Condition
- If the battery voltage is below 12.4 volts or fails the load test, replace it with a compatible battery (Group size 49 or as specified in the owner’s manual).
- Ensure the replacement battery is fully charged.
Reinstall Battery
- Place the new or cleaned battery back into the tray.
- Reconnect the positive terminal first, followed by the negative terminal.

3. Starter Motor Inspection

Locate Starter Motor
- The starter motor is typically located near the transmission bell housing.
Check Connections
- Visually inspect the wiring harness and connections to the starter motor for any signs of damage or looseness.
- Tighten any loose connections.
Test Starter Motor
- If the battery is good and connections are tight, perform a bench test on the starter motor by removing it and connecting it directly to a fully charged battery.
Replace Starter Motor (if necessary)
- If the starter motor does not engage, remove it using a socket set.
- Install the new starter motor, ensuring all bolts are torqued to manufacturer specifications.