my BMW 5 Series G30/G31 (2017-2024) won’t start, just clicks, what should I check?

BMW 5 Series G30/G31 (2017-2024)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

548 words

Problem Statement

The BMW 5 Series G30/G31 (2017-2024) is experiencing a starting issue characterized by a clicking sound when attempting to start the engine, indicating potential electrical or mec

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the negative battery terminal before working on electrical systems.
•Allow the vehicle to cool before inspecting the engine components.

Symptoms

•Engine does not crank, only a clicking noise is heard
•Dashboard lights dim when the key is turned to the start position
•Battery warning light illuminated
•Possible intermittent electrical issues (e.g., lights flickering)
•No sound from the starter motor

Diagnostic Steps

1
Inspect battery condition and connections for corrosion or looseness.
2
Test battery voltage with a multimeter; it should read at least 12.4 volts.
3
Check starter relay operation by swapping with another relay of the same type.
4
Inspect the fuses related to the starting system for any blown fuses.
5
Measure voltage at the starter motor when the ignition is turned on.
6
Perform a visual inspection of the wiring and connectors from the battery to the starter.

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

•Sub-steps:**
•Disconnect the negative battery terminal to prevent electrical shock.
•Ensure the vehicle is in park or neutral with the parking brake engaged.

Parts Required

•Replacement battery (if needed)
•Replacement starter relay (if needed)
•Replacement starter motor (if needed)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Inspect battery condition and connections for corrosion or looseness.
2
Test battery voltage with a multimeter; it should read at least 12.4 volts.
3
Check starter relay operation by swapping with another relay of the same type.
4
Inspect the fuses related to the starting system for any blown fuses.
5
Measure voltage at the starter motor when the ignition is turned on.
6
Perform a visual inspection of the wiring and connectors from the battery to the starter.

Solution

1. Preparation

Tools Required: OBD-II scanner, multimeter, socket set, torque wrench, battery terminal cleaner, and a flashlight.
Sub-steps:
- Disconnect the negative battery terminal to prevent electrical shock.
- Ensure the vehicle is in park or neutral with the parking brake engaged.

2. Check and Replace Battery

Tools Required: Multimeter, socket set.
Sub-steps:
1. Connect the multimeter to the battery terminals to check voltage.
2. If voltage is below 12.4 volts, recharge or replace the battery.
3. Clean the battery terminals using a battery terminal cleaner.
4. Reconnect the battery terminals securely, starting with the positive terminal followed by the negative terminal.

3. Inspect and Replace Starter Relay

Tools Required: Socket set, replacement starter relay.
Sub-steps:
1. Locate the fuse and relay box under the hood.
2. Remove the starter relay and visually inspect it for damage.
3. Replace the relay with a new one if found faulty.
4. Ensure the replacement relay is seated properly in the socket.

4. Test and Replace Starter Motor (if necessary)

Tools Required: Socket set, torque wrench.
Sub-steps:
1. Locate the starter motor; typically found near the transmission.
2. Disconnect the electrical connections from the starter motor.
3. Remove the mounting bolts securing the starter motor using a socket set.
4. Replace the starter motor with a new unit, ensuring to torque the bolts to manufacturer specifications.
5. Reconnect the electrical connections.