why won't my BMW 5 Series G30/G31 (2017-2024) remote start work?

BMW 5 Series G30/G31 (2017-2024)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

433 words

Problem Statement

The remote start feature of a BMW 5 Series G30/G31 (2017-2024) is not functioning as intended.

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems to prevent short circuits.

Symptoms

•Remote start button does not respond when pressed.
•No engine start confirmation sound or indicator.
•Check engine light illuminated on the dashboard.
•Vehicle does not unlock or lock remotely.
•Battery in the key fob is low or dead.

Diagnostic Steps

1
Inspect the key fob battery to ensure it has sufficient charge.
2
Check for any error codes using an OBD-II scanner.
3
Verify that the remote start feature is enabled in the vehicle settings.
4
Confirm that all doors, hood, and trunk are securely closed as required for remote start.
5
Ensure the vehicle is not in gear and is parked correctly.
6
Test the remote start function with a different key fob, if available.

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

•OBD-II scanner
•Small flat-head screwdriver
•Multimeter (optional for battery testing)

Parts Required

•Key fob battery (CR2032)

Related Faults

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Diagnostic Steps

1
Inspect the key fob battery to ensure it has sufficient charge.
2
Check for any error codes using an OBD-II scanner.
3
Verify that the remote start feature is enabled in the vehicle settings.
4
Confirm that all doors, hood, and trunk are securely closed as required for remote start.
5
Ensure the vehicle is not in gear and is parked correctly.
6
Test the remote start function with a different key fob, if available.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked in a safe location.
Disconnect the negative battery terminal to prevent electrical issues.

2. Key Fob Battery Replacement

Remove the key fob casing using a small flat-head screwdriver.
Replace the old battery (usually CR2032) with a new one, ensuring correct polarity.
Reassemble the key fob casing.

3. Error Code Clearing

Reconnect the negative battery terminal.
Use an OBD-II scanner to clear any existing error codes that may affect vehicle functions.
After clearing, check if the remote start feature is operational.

4. Feature Activation

Access the vehicle settings via the infotainment system.
Navigate to the "Remote Services" or "Comfort Access" settings.
Ensure that the remote start function is turned on and configured properly.

5. Door and Hood Inspection

Check that all doors, trunk, and hood are closed securely.
If necessary, adjust or repair any faulty door or hood sensors that may prevent remote start.