Radar Warning System for BMW 3 Series G20 G21 M3 With Blind Spot Detection and MmWave Radar Sensors
Elevate your driving safety with the BMW 3 Series BSD Radar Warning System with Blind Spot Detection for G20 G21 M3. Built to enhance awareness on busy highways and in city traffic, this radar-based blind spot assistant uses two mmwave radar units mounted on the rear bumper to monitor the area 3–10 meters behind your vehicle. When movement is detected in the blind spot, LEDs light up and alerts sound to prompt a safe lane change, while the corresponding turn signal can activate on the same side to reinforce awareness. This system is specifically tailored for BMW 3 Series G20/G21 M3 models from 2019 through 2024 and supports customization for mirrors to match your original interior lighting pattern.
Designed for real-world driving, the BSD system lowers the risk of unexpected side collisions during lane changes or rear-end scenarios. With a wide operating voltage (DC 9–16V) and robust weather tolerance (IP66), it suits a broad range of driving environments, from urban roads to highway commutes. The dual radar setup provides reliable detection at speeds up to ±120 KM/H, helping you identify approaching vehicles or moving objects before they enter your blind spot. The system also supports multiple integration features such as lane change assistance (LCA), blind-spot monitoring (BSD), active overtaking warning (AOA), B-pillar blind spot follow warning, reverse crossing warning (RCTA), and optional door opening warning (DOW).
Two installation options give you flexibility: a lens display where the prompt light is mounted on the lens, or an in-car display that shows warnings on the triangular window inside the cabin. Depending on your preference, you can choose the most discreet or most visible alert method to suit your driving style.
Language support: English
Warranty and certification: All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.
Customization option for original mirrors: If you send your original BMW mirrors to our factory, our engineers can customize the laser warning light pattern to match your mirrors. The product price remains the same; you would only be responsible for shipping the mirrors and any applicable customs duties.
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Benefits & Tips
- Practical lane-change support: The system actively monitors the rear blind spot and provides clear visual and audible alerts to help you make safer lane moves.
- Reduce driver fatigue: With automated warnings and optional in-car LED indicators, you’ll feel more confident in dense traffic or during long highway drives.
- Customizable appearance: Choose between lens-display or in-car display to match your vehicle’s interior aesthetics and your preferred alert visibility.
Product specifications
- Working voltage: DC 9–16V
- Working current: DC 12V ~ 430 mA ± 10 mA
- Working temperature: -30 °C ~ +80 °C
- Static current consumption: ≤ 1 mA
- Waterproof rating: IP66
- Speed adaptation range: ±120 KM/hour
- Warning range: 3–10 meters behind the side
- Warning method: sound and LED lighting
- Startup mode: start with ACC
- Detection mode: Radar Signal Detection
- Alarms: LED indicators + audible alert
- Radar type: two mmwave radars (24 GHz/72 GHz) mounted on the rear bumper
Package includes:
- Radar sensor
- Power cord
- LED transconnection
- LED indicator light
- Blind area rear view lens
- Steering and reversing inspection line
- Calibration card
- Radar bracket
- Screw
- Buzzer
- Instructions
Warnings/Reminders
Radar signals cannot penetrate metal and can be interfered with by fluorescent lights. During installation, confirm the following: the rear bumper is plastic; there is no metal interference directly in front of the radar sensor (signal emission surface); the radar sensor should not be installed facing a fluorescent lamp.
Notes on installation and compatibility
Suitable for BMW 3 Series G20 G21 M3 models from 2019 to 2024. Customized mirror support is available—send your original mirrors to our factory for personalized laser warning light pattern matching. The price remains the same; you cover shipping and any potential customs duties.
Two mainstream display options ensure you can tailor visibility to your preference: Lens display with the prompt light on the lens, or in-car display with warnings shown on the triangular window inside the vehicle.