Blind Spot Monitor

Passive vs. Active Systems

There are two BSM types:

• Passive: Alerts the driver only
• Active: Tied to steering or braking, may intervene

Both require precise calibration to work reliably.

How Calibration Works

The process varies by OEM, but most require static calibration using radar reflectors.

Steps include:

1. Level ground setup
2. Vehicle centered and weighted (if required)
3. OEM scan tool activates calibration mode
4. Targets placed 1–2.5 meters behind the bumper
5. Sensor signals are tested for alignment
6. If signals fail, the sensor is adjusted using micrometer tools

Some vehicles may also require a dynamic road test.

The system tracks traffic using wheel speed, steering, and radar input to validate results.

Challenges with BSM Calibrations

Radar sensors are hidden behind bumper covers. This makes positioning extremely sensitive.

Even minor bumper damage, aftermarket covers, or bracket misalignment can disrupt radar signals.

Technicians must inspect:

• Internal bumper structure
• Mounting hardware
• Wiring and signal paths

Our Calibration Process

At Crown Collision Solutions, BSM calibration is never an afterthought.

We:

• Follow OEM repair procedures
• Use factory-approved scan tools
• Document each calibration with detailed reports
• Verify sensor function in both static and dynamic environments

We treat ADAS systems with the same importance as collision repairs.

Safety isn’t optional—it’s standard.

When to Calibrate Your BSM System

Calibration is required if your vehicle had:

• A rear-end collision
• Quarter panel repair
• Bumper replacement
• Even if the dash light isn’t on, your BSM system may be off.

Let us confirm everything’s aligned, accurate, and ready.

Your blind spots deserve full visibility—every time you hit the road.