how to fix the remote start not working on my BMW 5 Series F10/F11 (2010-2017)

BMW 5 Series F10/F11 (2010-2017)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

567 words

Problem Statement

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

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always disconnect the battery before working on electrical components to prevent shocks or shorts.
•Ensure the vehicle is in a well-ventilated area while testing the remote start to avoid exhaust buildup.

Symptoms

•Remote start button does not initiate engine start
•No response from the vehicle when attempting remote start
•Possible warning light or message on the dashboard
•Key fob battery may be low or dead
•Engine cranks but does not start when using the remote

Diagnostic Steps

1
Check the key fob battery for any signs of low power or failure.
2
Test the remote start feature using a spare key fob, if available, to rule out key fob issues.
3
Scan the vehicle’s onboard diagnostics (OBD-II) for any error codes related to the remote start system.
4
Inspect the vehicle's battery voltage to ensure it's at an adequate level for remote starting.
5
Verify that all doors and the hood are properly closed, as the remote start will not activate if any are ajar.
6
Check for any recent software updates or recalls related to the remote start 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

•Multimeter
•Flathead screwdriver
•BMW diagnostic tool (for software updates)

Parts Required

•Key fob battery (CR2032)
•Remote start relay (if faulty)
•Fuses (if blown)

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Diagnostic Steps

1
Check the key fob battery for any signs of low power or failure.
2
Test the remote start feature using a spare key fob, if available, to rule out key fob issues.
3
Scan the vehicle’s onboard diagnostics (OBD-II) for any error codes related to the remote start system.
4
Inspect the vehicle's battery voltage to ensure it's at an adequate level for remote starting.
5
Verify that all doors and the hood are properly closed, as the remote start will not activate if any are ajar.
6
Check for any recent software updates or recalls related to the remote start system.

Solution

1. Key Fob Battery Replacement

Sub-steps:
1. Open the key fob using a flathead screwdriver.
2. Remove the old battery (usually a CR2032) and replace it with a new one, ensuring the polarity matches (positive side facing up).
3. Reassemble the key fob and test the remote start function.

2. Battery Voltage Check

Sub-steps:
1. Use a multimeter to check the vehicle battery voltage. It should read around 12.6 volts or higher.
2. If voltage is low, charge the battery or jump-start the vehicle.
3. After charging, test the remote start feature again.

3. Software Update

Sub-steps:
1. Connect the vehicle to a BMW diagnostic tool or visit a dealership with the capability to perform software updates.
2. Check for any available updates specifically for the remote start system.
3. Follow the tool's instructions to update the software if necessary.

4. Inspect Remote Start System Components

Sub-steps:
1. Check the remote start relay and fuse associated with the remote start system; replace if blown.
2. Inspect wiring connections for any signs of damage or corrosion.
3. Ensure that the vehicle's anti-theft system is not inhibiting the remote start.