why does 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

563 words

Problem Statement

The remote start feature on a BMW 5 Series G30/G31 (2017-2024) is not functioning, which could be due to various issues related to the vehicle's systems or settings.

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on any electrical components.
•Ensure the vehicle is in a safe and secure position while performing inspections.

Symptoms

•Remote start button does not respond when pressed.
•"Remote Start Disabled" message displayed on the dashboard.
•Engine fails to crank when remote start is attempted.
•Key fob may not unlock or lock doors properly.
•Battery warning light illuminated on the dashboard.
•Vehicle does not start from the app or mobile device.

Diagnostic Steps

1
Check the battery voltage of the key fob using a multimeter.
2
Verify that the vehicle is in an appropriate condition for remote start (e.g., doors closed, hood closed).
3
Inspect the vehicle’s battery for proper charge and condition.
4
Scan the vehicle's diagnostic system using an OBD-II scanner for any fault codes related to the remote start feature.
5
Ensure that the remote start feature is enabled in the vehicle settings.
6
Check for any software updates available for the vehicle’s infotainment system.

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
•Multimeter
•Basic hand tools (screwdrivers, wrenches)

Parts Required

•Key fob battery (CR2032)
•Vehicle battery (if necessary)

Related Faults

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Symptoms

•Remote start button does not respond when pressed.

•"Remote Start Disabled" message displayed on the dashboard.

•Engine fails to crank when remote start is attempted.

•Key fob may not unlock or lock doors properly.

•Battery warning light illuminated on the dashboard.

•Vehicle does not start from the app or mobile device.

Diagnostic Steps

1
Check the battery voltage of the key fob using a multimeter.
2
Verify that the vehicle is in an appropriate condition for remote start (e.g., doors closed, hood closed).
3
Inspect the vehicle’s battery for proper charge and condition.
4
Scan the vehicle's diagnostic system using an OBD-II scanner for any fault codes related to the remote start feature.
5
Ensure that the remote start feature is enabled in the vehicle settings.
6
Check for any software updates available for the vehicle’s infotainment system.

Solution

1. Preparation

Tools Required: OBD-II scanner, multimeter, basic hand tools.
Gather all necessary tools and parts before starting the repair. Ensure the vehicle is parked safely and powered off.

2. Check Key Fob Battery

Remove the key fob cover using a small flat-head screwdriver.
Replace the old battery with a new one (typically CR2032) ensuring correct polarity.
Reassemble the key fob and test the remote start function.

3. Inspect Vehicle Battery

Open the hood and visually inspect the battery for corrosion or loose connections.
Use a multimeter to check the battery voltage; it should be above 12.6 volts.
If the voltage is low, jump-start the vehicle or replace the battery if necessary.

4. Scan for Fault Codes

Connect the OBD-II scanner to the vehicle’s diagnostic port.
Turn on the ignition (without starting the engine) and scan for any error codes.
If codes are present, address the specific issues indicated (e.g., electrical faults, module communication errors).

5. Enable Remote Start Feature

Start the vehicle and navigate to the settings menu on the infotainment system.
Locate the remote start feature settings and ensure it is enabled.
Save changes and exit the settings menu.

6. Software Update

Check the vehicle’s infotainment system for any available updates.
If an update is available, follow the manufacturer’s guidelines to download and install it.