why is my BMW 5 Series G30/G31 (2017-2024) remote start not working

BMW 5 Series G30/G31 (2017-2024)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

530 words

Problem Statement

The remote start feature on a BMW 5 Series G30/G31 (2017-2024) is not functioning properly, preventing the vehicle from starting remotely.

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems, if applicable.
•Ensure the vehicle is in a secure position while working on sensors.

Symptoms

•Remote start button does not activate the vehicle
•No response or feedback from the vehicle when attempting to start
•Check control message indicating remote start is unavailable
•Vehicle starts normally using the key fob or ignition
•Battery in the key fob is good (no low battery warning)

Diagnostic Steps

1
Check for any error codes using an OBD-II scanner to identify potential issues.
2
Inspect the vehicle's battery voltage; ensure it is above 12.4 volts.
3
Verify the functionality of the key fob; test with another fob if available.
4
Confirm that the vehicle is in a location that is within the remote start range.
5
Check the status of the vehicle’s security system; ensure it is not preventing remote start.
6
Inspect the hood and door sensors; ensure they are functioning and not signaling an open condition.

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
•replacement battery (if needed).

Parts Required

•Key fob battery (if needed)

Related Faults

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Diagnostic Steps

1
Check for any error codes using an OBD-II scanner to identify potential issues.
2
Inspect the vehicle's battery voltage; ensure it is above 12.4 volts.
3
Verify the functionality of the key fob; test with another fob if available.
4
Confirm that the vehicle is in a location that is within the remote start range.
5
Check the status of the vehicle’s security system; ensure it is not preventing remote start.
6
Inspect the hood and door sensors; ensure they are functioning and not signaling an open condition.

Solution

1. Preparation

Gather all necessary tools and parts.
Ensure the vehicle is parked in a safe area.

2. Check Key Fob and Battery

Sub-steps:
- Use a multimeter to test the key fob battery; replace if below 3 volts.
- Reprogram the key fob if needed by following the manufacturer’s instructions.
Tools Required: Multimeter, replacement battery (if needed).

3. Inspect Vehicle Battery

Sub-steps:
- Open the hood and visually inspect the battery for corrosion or loose connections.
- Use a multimeter to confirm the battery voltage is above 12.4 volts. If it’s low, charge or replace the battery.
Tools Required: Multimeter, wrench set for battery terminals.

4. Check Sensors

Sub-steps:
- Inspect the hood and door sensors for proper operation; clean any dirt or debris.
- Ensure the sensors are securely connected and functioning correctly.
Tools Required: Visual inspection tools, possibly a multimeter for electrical testing.

5. Reprogram Remote Start Feature

Sub-steps:
- Access the vehicle's settings through the iDrive system.
- Navigate to the remote start settings and ensure it is enabled.
- Save settings and exit the menu.
Tools Required: BMW iDrive system.

6. Test Remote Start Functionality

Sub-steps:
- Attempt to use the remote start feature again after completing the checks.
Tools Required: None.