Check the Software Version

• It's essential to ensure that your BMW i4 is running the latest software version. BMW often releases updates to fix bugs or enhance system performance.
• You can check the software version through the infotainment system by navigating to the 'Settings' and 'Software Update' menu.
• Connect your vehicle to a stable Wi-Fi network to download and install available updates.

Inspect Brake Pedal Calibration

• Inconsistencies might arise if the brake pedal isn't calibrated properly. Over time, mechanical parts can shift, leading to performance variances.
• A BMW-certified technician can calibrate the brake pedal. It’s recommended not to attempt this procedure without proper training.

Test the Battery Management System

• Regenerative braking heavily relies on the battery’s ability to receive charge. If there's an issue with the battery management system (BMS), it could cause inconsistencies.
• A diagnostic tool specifically designed for BMW vehicles will help test the BMS efficiently.
• Consider scheduling a service visit to have professionals assess the BMS and resolve any detected issues.

Check Regeneration Settings

• The BMW i4 allows drivers to adjust the level of regenerative braking through the drive mode settings. Make sure these are set to your preference.
• If you notice inconsistencies, try toggling between different regenerative settings to see if a specific setting provides more stable performance.

Examine Physical Components

• In some cases, the physical components involved in regenerative braking, such as the brake assembly, may need examination. Worn-out components can lead to uneven performance.
• Inspect the brake pads, rotors, and associated hardware for wear and tear, ensuring they are in good condition.
• Retighten any loose connections to ensure a more consistent operation.

Consult Professional Help

• If you’ve tried the above steps and still experience inconsistencies, consult with a BMW service center.
• Professionals have access to specialized diagnostic tools and are more equipped to perform detailed inspections and repairs.

Following these steps can help you address the inconsistencies in your BMW i4's regenerative braking system effectively.