how to fix the remote start issue on my BMW 5 Series G30/G31 (2017-2024)

BMW 5 Series G30/G31 (2017-2024)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

520 words

Problem Statement

The remote start feature on your 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 the battery before working on electrical systems to prevent shocks or shorts.

Symptoms

•Remote start button does not respond when pressed
•Check engine light illuminated on the dashboard
•Vehicle does not start after attempting remote start
•Intermittent failure of remote start function
•Key fob battery is low or dead
•Notifications or warnings displayed on the iDrive system related to remote start

Diagnostic Steps

1
Check the key fob battery level and replace it if necessary.
2
Verify that the vehicle is in the correct mode for remote start (e.g., transmission in park).
3
Scan the vehicle's OBD-II system for any error codes related to the engine or remote start system.
4
Inspect the remote start system settings in the iDrive menu to ensure it is enabled.
5
Check for any fuses related to the remote start system in the fuse box.
6
Inspect the wiring and connections of the remote start module if equipped.

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

•Ensure the vehicle is parked on a level surface and the engine is off.
•Disconnect the negative battery terminal to avoid electrical shorts.

Parts Required

•Key fob battery (CR2032)
•Fuse (if blown)

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Symptoms

•Remote start button does not respond when pressed

•Check engine light illuminated on the dashboard

•Vehicle does not start after attempting remote start

•Intermittent failure of remote start function

•Key fob battery is low or dead

•Notifications or warnings displayed on the iDrive system related to remote start

Diagnostic Steps

1
Check the key fob battery level and replace it if necessary.
2
Verify that the vehicle is in the correct mode for remote start (e.g., transmission in park).
3
Scan the vehicle's OBD-II system for any error codes related to the engine or remote start system.
4
Inspect the remote start system settings in the iDrive menu to ensure it is enabled.
5
Check for any fuses related to the remote start system in the fuse box.
6
Inspect the wiring and connections of the remote start module if equipped.

Solution

1. Preparation

Tools Required: OBD-II scanner, multimeter, basic hand tools (screwdrivers, socket set), replacement key fob battery
Ensure the vehicle is parked on a level surface and the engine is off.
Disconnect the negative battery terminal to avoid electrical shorts.

2. Replace Key Fob Battery

Sub-steps:
1. Open the key fob using a small flathead screwdriver to carefully pry it apart.
2. Remove the old battery and replace it with a new CR2032 battery, ensuring correct polarity.
3. Reassemble the key fob and test the remote start function.

3. Check and Replace Fuses

Sub-steps:
1. Locate the fuse box, typically found under the dashboard or in the engine compartment.
2. Use the fuse diagram to identify the fuse related to the remote start system.
3. Remove the fuse and inspect it for continuity using a multimeter. Replace it if blown.
4. Reinstall the fuse and reconnect the battery terminal.

4. Reset Remote Start System

Sub-steps:
1. Reconnect the negative battery terminal.
2. Turn the ignition to the "On" position without starting the engine.
3. Wait for 10 seconds, then turn the key back to the "Off" position.
4. Start the vehicle normally to reset any potential system errors.