my BMW 5 Series G30/G31 (2017-2024) remote start not working what could be wrong

BMW 5 Series G30/G31 (2017-2024)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

523 words

Problem Statement

The remote start feature on a BMW 5 Series G30/G31 (2017-2024) is not functioning, leading to concerns about potential underlying issues.

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to prevent shorts.

Symptoms

•Remote start button does not activate the engine
•Dashboard indicators do not illuminate when attempting to start remotely
•Key fob response is unresponsive or delayed
•No engine cranking sound when attempting remote start
•Remote start feature works intermittently or fails completely

Diagnostic Steps

1
Check the key fob battery for low power or failure.
2
Ensure that the vehicle is in a suitable environment for remote start (e.g., doors closed, vehicle in park).
3
Scan the vehicle for error codes using an OBD-II scanner to identify any related issues.
4
Inspect the remote start system fuse for any blown fuses.
5
Verify that the vehicle’s security system is not preventing the remote start function.
6
Test the key fob signal strength using a multimeter or by checking for signal operation at close range.

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

•Open the key fob using a small screwdriver.
•Remove the old battery and replace it with a new one, ensuring correct polarity.
•Reassemble the key fob and test the remote start function.

Parts Required

•Key fob battery (CR2032 or as specified)
•Replacement fuse (if necessary)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Check the key fob battery for low power or failure.
2
Ensure that the vehicle is in a suitable environment for remote start (e.g., doors closed, vehicle in park).
3
Scan the vehicle for error codes using an OBD-II scanner to identify any related issues.
4
Inspect the remote start system fuse for any blown fuses.
5
Verify that the vehicle’s security system is not preventing the remote start function.
6
Test the key fob signal strength using a multimeter or by checking for signal operation at close range.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure you have a new key fob battery if needed.
Disconnect the vehicle battery before working on the electrical system.

2. Replace Key Fob Battery

Tools Required: Small screwdriver, replacement key fob battery (CR2032 or as specified).
Open the key fob using a small screwdriver.
Remove the old battery and replace it with a new one, ensuring correct polarity.
Reassemble the key fob and test the remote start function.

3. Inspect and Replace Fuses

Tools Required: Fuse puller or needle-nose pliers.
Locate the fuse box (usually under the dashboard or in the engine compartment).
Identify the fuse related to the remote start feature using the owner's manual.
Remove the fuse and inspect it for continuity. Replace it if blown with an identical amperage fuse.

4. Check Security System Settings

Tools Required: OBD-II scanner.
Connect the OBD-II scanner to the vehicle's diagnostic port.
Access the security system settings and verify that the remote start feature is enabled.
If not enabled, follow the scanner's instructions to enable the feature.

5. Test Remote Start Functionality

Reconnect the vehicle battery.
Test the remote start function with the key fob. Ensure the vehicle is in the proper condition (doors closed, in park).