Repair Lane

Blind Spot Sensor Calibration

Calibration of the blind spot monitoring radars in the rear bumper so the mirror warning lights trigger accurately again.

Difficulty: moderate~12 hrs1–2 hours
Estimated total
$115–350
Parts$0
Labor$115–350
Labor time12 hrs
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What's involved

What this repair actually is.

Blind spot monitoring uses two small radars in the rear corners of the car, and bumper work, a parking tap, or a sensor replacement can throw off their coverage zones. We verify both sensors are mounted correctly, run the manufacturer calibration for each side, and confirm the mirror alerts and cross-traffic warnings trigger at the right distances.

Symptoms

How you can tell.

  • Blind spot warning light stuck on or never comes on
  • 'Blind spot system unavailable' message
  • Alerts triggering with no car beside you
  • System stopped working after rear bumper repair or a rear-end tap
  • Rear cross-traffic alert missing cars in parking lots
If you delay

You may trust a blind spot system that can no longer see reliably — a missed warning during a lane change is exactly the accident it exists to prevent.

Educational estimate. Real pricing depends on your vehicle, the inspection, parts availability, taxes, and shop rates. Use this as a guide while you shop quotes.
Related

Often done together.