how to troubleshoot my BMW 5 Series F10/F11 (2010-2017) if the remote start isn’t working

BMW 5 Series F10/F11 (2010-2017)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

518 words

Problem Statement

The remote start feature on a BMW 5 Series F10/F11 (2010-2017) is not functioning, preventing the vehicle from being started remotely.

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components to prevent shock or short circuits.

Symptoms

•Remote key fob not responding
•No engine crank or start when pressing the remote start button
•Dashboard lights do not illuminate
•Possible "key not detected" warning on the display
•Vehicle starts normally with the physical key

Diagnostic Steps

1
Verify that the remote key fob battery is charged.
2
Check if the remote start feature is enabled in the vehicle settings.
3
Scan the vehicle’s onboard diagnostics (OBD-II) for any fault codes related to the remote start system.
4
Inspect the key fob for physical damage or wear.
5
Ensure the vehicle is in the correct conditions for remote start (e.g., doors closed, vehicle in park).
6
Test the remote start feature with a second key fob, if available.

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 flat surface with the engine off.

Parts Required

•Key fob battery (typically CR2032)

Related Faults

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Diagnostic Steps

1
Verify that the remote key fob battery is charged.
2
Check if the remote start feature is enabled in the vehicle settings.
3
Scan the vehicle’s onboard diagnostics (OBD-II) for any fault codes related to the remote start system.
4
Inspect the key fob for physical damage or wear.
5
Ensure the vehicle is in the correct conditions for remote start (e.g., doors closed, vehicle in park).
6
Test the remote start feature with a second key fob, if available.

Solution

1. Preparation

Tools Required: Flathead screwdriver, multimeter, OBD-II scanner
Ensure the vehicle is parked on a flat surface with the engine off.
Disconnect the battery to avoid any accidental shorts while working on the key fob or electrical systems.

2. Inspect and Replace Key Fob Battery

Sub-steps:
1. Use a flathead screwdriver to gently pry open the key fob casing.
2. Remove the old battery and note the battery type (usually CR2032).
3. Use a multimeter to check the voltage of the new battery to ensure it is functional.
4. Insert the new battery, ensuring correct polarity, and reassemble the key fob.

3. Check Vehicle Settings

Sub-steps:
1. Reconnect the battery.
2. Start the vehicle using the key and access the iDrive system.
3. Navigate to "Settings" > "Doors/Access" > "Remote Start" and ensure that it is activated.

4. Diagnose with OBD-II Scanner

Sub-steps:
1. Connect the OBD-II scanner to the vehicle’s diagnostic port.
2. Turn the ignition to the ON position without starting the engine.
3. Scan for any DTCs (Diagnostic Trouble Codes) that might indicate issues with the remote start system.
4. Document any codes and refer to the BMW service manual for further repair guidance.

5. Test the Remote Start Feature

Sub-steps:
1. Ensure the vehicle is in park and all doors are closed.
2. Press the remote start button on the key fob.
3. Observe if the engine starts and the dashboard lights illuminate.