Zonar mobile app to help ensure Cummins engines perform optimally, send updates over-the-air.

Reduce downtime and service center visits due to costly engine control module (ECM) updates with a convenient mobile app solution for fleet maintenance personnel and drivers. Zonar OTAir™ simplifies the calibration process for Cummins engines, reducing service downtime from up to three days to as little as five minutes.

Key features:
• Simple interface with clear instructions
• In-app QR code scanner for VIN validation
• Software rollback feature if deployment issues occur
• Status updates display on the app during the calibration process

How it works:
Firmware updates available on your vehicle’s engines are automatically downloaded through the Zonar V4™ telematics box to the Cummins ECM. When it’s safe for the vehicle to be stationary, the driver:
1. launches the Zonar OTAir mobile app
2. scans the vehicle’s unique VIN QR code (or enters it manually)
3. approves the calibration to begin the update

That’s it. Your Cummins-powered vehicle will be back on the road in minutes.

• Zonar V3™ or V4™ telematics unit installed on the vehicle.
• Subscription to Cummins Connected Software Updates. Contact Zonar at
• 2017 or newer Cummins engine. See Cummins website for specific engine eligibility.
• Unique VIN QR code or barcode affixed to the vehicle (contact Zonar if you vehicle needs one).

Ratings and Reviews

5.0 out of 5
11 Ratings

11 Ratings

seahawk2066 ,

Fast and efficient

Huge time and money saver. App is extremely user friendly.

lorenzosj ,

Fast and easy to use

Works great. Saves time and money!!!

DKJ2001 ,


Looks like an innovative way to update engines

App Privacy

The developer, Zonar, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


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