Rear-mount Ultrasonic Automotive Parking Assist

BackZone Plus Functionality

The BackZone Plus is a revolutionary automotive reverse parking assist system developed by Rostra Precision Controls and designed to give every driver peace-of-mind while parking their vehicle in cramped quarters. The BackZone Plus provides both visual and audible alerts to the potential dangers of nearby obstacles through the use of an included buzzer built into a digital display that can be mounted on your sun visor or dashboard. When the vehicle is shifted into reverse, the system will automatically engage and output a single "beep" alerting the driver it has been activated. The system will further alert the driver to the presence of obstacles within each of it's detection zones. From a pulsing beep to a steady tone, the BackZone Plus system works to keep drivers aware of their surroundings. The system goes silent again only when an obstacle is no longer in range of contacting the vehicle.

BackZone Plus Sensors

Included in every BackZone Plus ultrasonic parking assist system, you will find four bumper-mountable ultrasonic sensors with additional 6-degree and 12-degree angled bezels added to accommodate curved bumpers (see photos). Likewise, each kit includes four rubber sleeves to be used to reduce sensor vibration when mounting the ultrasonic sensors in steel bumpers. These sensors provide information to the main control module via the vehicle-length wiring harness, also included. The sensors included with each BackZone Plus arrive with a flat-black finish that can be painted to match the vehicle's exterior *.

* When painting of the sensors to match the vehicle's exterior is desired, it is highly recommended that a paint be used without any sort of metal flake mixed in as this type of paint can cause a false alarm situation when the vehicle is in reverse.

The cost of a parking aid is often less than the insurance deductible incurred in an accident. Protect your investment with Rostra's economical BackZone Plus!

Part Numbers

250-1903-BZP 4-Sensor Kit with Digital Display

Add-On Accessories

250-1919 18' Truck Fitment Kit with Under-Bumper Sensor Mounts

Download a copy of the BackZone Plus owner's manual by clicking here.

Product Features

Safer Parking Decisions

Safer Parking Decisions

Make safer parking decisions by using a BackZone Plus automotive parking assist to alert you to obstacles closing in on your vehicle while parking.

Ultrasonic Detection

Ultrasonic Detection

BackZone Plus' advanced ultrasonic-based technology means the system offers consistency on targets of all densities with fewer false alarms.

Paintable Bumper Sensors

Paintable Bumper Sensors

The flat black sensors included with each 250-1903-BZP BackZone Plus kit can be painted to match the factory fit and finish of your car!

Audible Alarm

Audible Alarm

The audible alarm included in each BackZone Plus automotive parking assist kit provides a unique way of alerting drivers to nearby unseen obstacles.

BackZone Plus Detection Zones

Safety Zone: 45" - 98"

When your vehicle is within the BackZone Plus' "Safety Zone", an object has been detected but is between 45" and 98" away. When an object is detected within this zone, a slow beeping will begin emanating from the digital display and green indicator lights will illuminate to let you know whether the object is more to the left or right-hand side of your vehicle. As you approach the detected object, the beeping will increase in rapidity.

Caution Zone: 21" - 44"

The "Caution Zone" of the BackZone Plus is meant to increase your awareness to the fact that an object that has been detected between 21" and 44" from your vehicle. Once inside this zone, the beeping emanating from the digital display will increase in speed and yellow indicator lights will illuminate to let you know whether the object is more to the left or right-hand side of your vehicle. As you approach the detected object, the beeping will continue to increase in rapidity.

Danger Zone: 0" - 20"

Once within the BackZone Plus' "Danger Zone", your vehicle is dangerously close to making contact with an object that has been detected. The audible beeping alert from the digital display will increase in speed from a staggered beeping to a solid tone. All indicator lights on the display's face will be illuminated at this point letting you know whether the object is more to the left or right-hand side of your vehicle.

BackZone Plus Detection Zones
Hover your mouse over each detection zone for a description of how the system reacts.

Download a copy of Rostra's 3 Year/36,000 Mile warranty registration card by clicking here.