bmw g20 re learn electric wind close position tips

Re learning the electric wind close position on your BMW G20 is a simple fix that restores your auto close window function. This guide walks you through the exact steps, common mistakes, and pro tips to get it done right. Whether your window lost calibration after a battery change or a module reset, you will have it working again in minutes.

Owning a BMW G20 comes with a lot of nice perks. One of the best features is the auto close window function. It lets you close all your windows with a single touch. But sometimes this feature stops working. Your window might not go all the way up or down. This is where the re learn electric wind close position process comes in. You do not need a mechanic for this. With a few simple steps, you can fix it yourself at home.

If you have ever wondered how to reset your BMW window calibration, you are in the right place. This guide covers everything you need to know. We will walk you through the full window relearn procedure step by step. You will also learn why the calibration gets lost in the first place. Plus, we share quick tips and common mistakes to avoid. By the end, you will feel confident fixing this issue on your own.

Key Takeaways

• Easy DIY Fix: You can re learn the wind close position at home with just your BMW G20 key and ignition.
• Quick Procedure: The re learn process takes only 5 to 10 minutes per window.
• Common Triggers: Battery disconnect, module reset, or door repair often cause the calibration to reset.
• Avoid Mistakes: Skipping the full up-and-down cycle is the most common error people make.
• When to Get Help: If the window still fails after relearning, the door control module or regulator may need inspection.
• Prevent Future Issues: Regular maintenance and proper battery care keep your BMW window system calibrated.

Understanding the BMW G20 Electric Window System

The BMW G20 uses a smart window system. Each door has a window control unit that talks to the BMW FEM module. The FEM stands for Front Electronic Module. It acts as the brain for many functions in your car. It controls the auto close function, the auto tilt, and the one-touch auto down feature. All of these rely on the window knowing its exact position.

The system uses a window position sensor to track where the glass is. When you raise the window, the sensor tells the module how far up it has gone. When you lower it, the same sensor tracks the down position. This data helps the car know when the window is fully closed or fully open.

How the Auto Close Function Works

The auto close function is designed for convenience. When you press the window switch up, the glass goes all the way up and then stops. It does not need you to hold the switch the whole time. This is called the one-touch auto close feature. The system memorizes the full close position during a process called calibration. Without proper calibration, the window does not know where “fully closed” actually is.

What Happens When Calibration Is Lost

When calibration is lost, the window behavior changes. You might notice the window stops halfway. It might not close fully when you use the auto function. Some owners report the window goes up a little and then drops back down. Others find the auto close button simply does nothing at all. These are clear signs that the BMW window programming needs to be refreshed.

Why You Need to Re Learn the Wind Close Position

Calibration loss happens more often than you think. Many BMW G20 owners face this issue at some point. Understanding why it happens helps you prevent it in the future.

Common Triggers That Require Recalibration

Several events can cause your window to lose its close position memory. Here are the most common ones:

• Battery Disconnect or Death: When you disconnect the car battery or it dies, all stored window positions reset. The system loses the reference points for each window.
• Door Panel Removal: If you or a mechanic removed a door panel for repair, the window module often resets. This is common after fixing a window regulator or replacing a switch.
• Module Reset or Coding Change: If you reset the BMW FEM module or changed any coding, the window calibration gets wiped.
• Window Motor Replacement: A new motor does not carry the old calibration data. You must relearn the position after installation.
• Software Update: Sometimes a BMW software update resets window settings. This is rare but does happen.
• Door Switch Replacement: Swapping out a door control switch can interrupt the calibration sequence.

No matter the cause, the fix is the same. You need to run the window relearn procedure for each affected window. It is quick and does not require any special tools.

Step-by-Step Re Learn Procedure for BMW G20

Follow these steps carefully for each window that needs recalibration. The process is the same for the driver, passenger, and rear windows.

Method One: Using the Window Switch

This is the most common and easiest method. Here is exactly what to do:

1. Start the Engine: Turn on your BMW G20. You can use the push start button with the key fob inside the car. Make sure the car is in Park.
2. Lower the Window Fully: Press and hold the window switch down. Let the glass go all the way down. Do not let go until it is fully open.
3. Wait Three Seconds: Keep holding the switch for three full seconds after the window is completely down.
4. Raise the Window Fully: Now pull the switch up and hold it. Let the glass go all the way to the top. Do not release the switch yet.
5. Wait Another Three Seconds: Hold the switch up for three seconds after the window is fully closed.
6. Release the Switch: Let go of the switch. The window initialization is now complete.
7. Test the Auto Function: Press the switch up once lightly. The window should close all the way by itself using the auto function.

Repeat these steps for each window that needs recalibration. It only takes about two minutes per window.

Method Two: Through the BMW iDrive System

Some BMW G20 models allow you to initiate the window calibration through the iDrive menu. This method works best when all windows need recalibration at once.

• Step 1: Press the Menu button on your iDrive controller.
• Step 2: Navigate to Settings, then Vehicle Settings.
• Step 3: Look for Window Functions or Window Calibration.
• Step 4: Select the option to initialize windows.
• Step 5: Follow the on-screen prompts to complete the process.

Not all G20 models show this exact menu path. If you do not see the option, stick with Method One. It works on every BMW G20 regardless of the iDrive version.

Method Three: Using the BimmerCode App

For more advanced users, the BimmerCode app offers another way to reset the window calibration. You will need an OBD2 adapter that works with BMW. Connect the adapter to the diagnostic port under the dashboard. Open BimmerCode on your phone. Find the window initialization module and run the reset. This method is helpful when the standard procedure does not work.

Quick Tips for a Successful Re Learn

Doing the re learn correctly the first time saves you a lot of frustration. Here are some pro tips that make a big difference.

• Always Hold the Switch Long Enough: The three-second wait at the top and bottom is critical. Skipping this is the number one reason the relearn fails.
• Make Sure the Window Is Fully Open Before Going Up: If the window is even slightly down when you start the up cycle, the calibration will be off.
• Do Not Interrupt the Cycle: Once you start, let the full sequence complete. Do not let go of the switch early.
• Check the Window Seal: A dirty or damaged seal can make the window feel stuck. Clean the rubber channels before you start the relearn.
• Repeat if Necessary: If the first attempt does not work, do it again. Sometimes two cycles are needed for the system to fully recognize the new positions.
• Work on One Window at a Time: Do not try to calibrate all windows at once. Focus on one, test it, then move to the next.

Common Mistakes to Avoid

Even with the best intentions, people make mistakes during the window relearn procedure. Here are the ones to watch out for:

• Releasing the Switch Too Early: This is the most common error. The system needs that full hold time at each end of the travel.
• Starting with the Window Halfway Down: Always start from fully down. The system needs the full range of motion to set the correct wind close position.
• Ignoring Error Messages: If your dashboard shows a warning about the window system, do not ignore it. Address the warning before attempting the relearn.
• Trying to Relearn After a Quick Battery Jump: If you jumped the battery, wait at least ten minutes before starting. Let the system fully power down and reset.

When to Seek Professional Help

Most of the time, the relearn process fixes the issue. But there are situations where you need a professional. Knowing the difference saves you time and money.

Signs That Indicate a Deeper Problem

Watch for these warning signs that point to something beyond a simple calibration issue:

• Window Makes Grinding Noises: This could mean the window regulator is worn or damaged. A regulator problem will not be fixed by relearning.
• Window Moves Very Slowly: A weak BMW window motor can cause slow movement. Relearning will not fix a dying motor.
• Window Drops Back Down After Closing: This often points to a faulty seal or a misaligned track. The motor is working but the glass is not seating correctly.
• Multiple Windows Fail at Once: If several windows lose calibration simultaneously, the door control module or FEM module might have a deeper fault.
• Error Codes Appear on the Dashboard: Use a diagnostic tool to check for trouble codes. Codes pointing to the window module or motor mean a professional inspection is needed.

If you see any of these signs, take your BMW G20 to a qualified BMW technician. They can run proper diagnostics and replace faulty parts if needed. Trying to relearn the position on a broken regulator will only waste your time.

Maintaining Your BMW G20 Window System

Once you have successfully relearned the electric wind close position, you want to keep it that way. Regular care goes a long way in preventing future calibration issues.

Clean your window tracks and rubber seals every few weeks. Dirt and debris cause friction that stresses the window motor. Use a silicone-based lubricant on the rubber channels. This keeps the window sliding smoothly and reduces wear on the motor.

Also, be mindful when disconnecting your battery. If you need to remove the battery for any reason, write down your window calibration or note which windows needed relearning. This saves you time when you reconnect everything. Some owners keep a simple log in their glove box for this purpose.

Finally, avoid forcing the window switch. If a window feels stuck, stop and investigate. Forcing it can damage the motor or the regulator. A small delay now saves you from a bigger repair later.

Final Thoughts

Relearning the electric wind close position on your BMW G20 is one of the simplest fixes you can do yourself. It takes just a few minutes and requires no special tools. Whether your window lost calibration after a battery change, a door repair, or a module reset, the steps in this guide will get you back to normal.

Remember to hold the switch for the full three seconds at each end. Start from a fully lowered position. And test the auto function after each relearn. If the problem persists, do not hesitate to seek professional help. A deeper issue with the regulator, motor, or control module may be at play.

With a little patience and the right approach, your BMW G20 window system will work like new again. Enjoy the convenience of the auto close function and the smooth ride that comes with a properly calibrated window system.

Frequently Asked Questions

How long does the BMW G20 window relearn take?

The entire window relearn procedure takes about two minutes per window. If you need to recalibrate all four windows, plan for around ten to fifteen minutes total. The process is quick and straightforward once you know the steps.

Can I relearn the wind close position without starting the engine?

No, you need the engine running or the ignition in accessory mode. The BMW FEM module needs power to store the new calibration data. Without the system powered on, the relearn will not save properly.

Why does my BMW G20 window keep losing calibration?

Repeated calibration loss usually points to an underlying issue. It could be a weak battery, a failing door control module, or a problem with the window position sensor. If you find yourself relearning the position frequently, have a technician inspect the system for faults.

Is it safe to drive with a window that will not auto close?

Yes, it is safe but not ideal. The window will still work manually. However, the auto close feature is a convenience and safety function. It ensures all windows are fully sealed. Without it, you might forget to fully close a window, especially in bad weather.

What tools do I need to relearn the electric wind close position?

You need nothing special. Just your BMW key or push-start ignition, and about five minutes of time. No diagnostic tools are required for the basic window calibration process. If you want to use the BimmerCode app method, you will need a compatible OBD2 adapter.

Will the relearn procedure work if the window motor is failing?

No, the relearn will not fix a failing motor. If the motor is weak or making unusual noises, the window regulator or motor itself needs replacement. The relearn only works when the mechanical parts of the window are in good condition.

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