why is my BMW 3 Series F30/F31 (2012-2019) remote start not working

BMW 3 Series F30/F31 (2012-2019)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

536 words

Problem Statement

The remote start feature on a BMW 3 Series F30/F31 (2012-2019) is not functioning, preventing the engine from starting remotely.

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is in a safe environment, and avoid remote starting in enclosed spaces.

Symptoms

•Remote start button does not initiate the engine start
•No response or indication from the vehicle when pressing the remote start button
•Dashboard lights may flicker briefly, but the engine does not start
•Engine starts normally using the key fob or ignition
•Possible "Remote Start Disabled" message on the dashboard (if equipped with a display)

Diagnostic Steps

1
Verify the vehicle is equipped with the remote start feature.
2
Check the key fob battery to ensure it is functioning properly.
3
Inspect the remote start system fuse for any blown fuses.
4
Scan the vehicle's onboard computer for any trouble codes using an OBD-II scanner.
5
Confirm that all doors, the trunk, and the hood are closed securely, as remote start requires all to be closed.
6
Check for any active security system or immobilizer issues that might prevent starting.

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

•Flat-head screwdriver
•new key fob battery.

Parts Required

•Key fob battery (CR2032)
•Replacement fuse (if applicable)

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Symptoms

•Remote start button does not initiate the engine start

•No response or indication from the vehicle when pressing the remote start button

•Dashboard lights may flicker briefly, but the engine does not start

•Engine starts normally using the key fob or ignition

•Possible "Remote Start Disabled" message on the dashboard (if equipped with a display)

Diagnostic Steps

1
Verify the vehicle is equipped with the remote start feature.
2
Check the key fob battery to ensure it is functioning properly.
3
Inspect the remote start system fuse for any blown fuses.
4
Scan the vehicle's onboard computer for any trouble codes using an OBD-II scanner.
5
Confirm that all doors, the trunk, and the hood are closed securely, as remote start requires all to be closed.
6
Check for any active security system or immobilizer issues that might prevent starting.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is in a well-ventilated area and turned off.

2. Check Key Fob Battery

Sub-steps:
1. Remove the key fob casing using a small flat-head screwdriver.
2. Replace the old battery with a new one (commonly CR2032).
3. Reassemble the key fob.
Tools Required: Flat-head screwdriver, new key fob battery.

3. Inspect and Replace Fuse

Sub-steps:
1. Locate the fuse box (typically found under the dashboard or in the engine compartment).
2. Identify the fuse related to the remote start system (refer to the owner's manual).
3. Use a fuse puller or pliers to remove the fuse and inspect it.
4. Replace with a new fuse of the same amperage if blown.
Tools Required: Fuse puller or pliers.

4. Scan for Trouble Codes

Sub-steps:
1. Connect an OBD-II scanner to the vehicle's diagnostic port.
2. Turn the ignition to the "ON" position without starting the engine.
3. Scan for error codes and document any related to the remote start system.
4. Address any specific codes according to manufacturer guidelines.
Tools Required: OBD-II scanner.

5. Security System Check

Sub-steps:
1. Verify that all doors, the trunk, and hood are fully closed.
2. If applicable, ensure the vehicle is in an area where remote start is allowed and not restricted.
3. If issues persist, consider resetting the vehicle's security system according to manufacturer instructions.
Tools Required: None.