how to fix the navigation system not working in my BMW 3 Series G20/G21 (2019-2024)?

Solution

1. Preparation

• Gather necessary tools and replacement parts.
• Ensure the vehicle is parked in a safe area with the engine off.
• Disconnect the negative terminal of the battery to prevent electrical shorts.

2. Check and Update Software

• Reconnect the battery and start the vehicle.
• Access the iDrive system and navigate to the "Settings" menu.
• Select "Software Update" and follow prompts to check for available updates.
• Download and install any available updates.

3. Inspect GPS Antenna

• Remove the interior trim or panel covering the GPS antenna, typically located on the roof or rear of the vehicle.
• Inspect the antenna and its wiring for damage or loose connections.
• If damaged, replace the GPS antenna with a new part.

4. Check Battery Voltage

• Use a multimeter to measure the voltage at the battery terminals. It should read between 12.4V and 12.7V when the engine is off.
• If the voltage is low, charge or replace the battery as necessary.

5. Perform Hard Reset

• With the engine off, disconnect the negative terminal of the battery.
• Wait for 5-10 minutes, then reconnect the negative terminal.
• Start the vehicle and check the navigation system functionality.