Your Fleet’s Watchtower:
Always On, Always Watching.
AI and human expertise working 24/7 to watch over your fleet, predict issues, and hand you the repair plan.
Every mile your fleet runs, WatchTower is working behind the scenes. As buses operate, streams of data flow instantly to the cloud where our predictive AI and expert diesel technicians review them in real time. Our AI doesn’t just monitor data. It predicts potential issues before they become breakdowns.
We cut through the noise, focus on what matters, and deliver clear repair plans so you know exactly when to act and how to fix it. The result: less downtime, fewer breakdowns, and a fleet that runs smarter every single day.
The Cost of Guesswork is Breaking Fleets
Modern buses generate thousands of data points and constant fault codes, but most of them lack context. Fleet managers are left guessing which issues matter, which can wait, and when to pull a vehicle from service. The result? Wasted labor, unnecessary parts replacement, surprise breakdowns, and vehicles sidelined longer than they should be
From Data to Decisions in Four Steps.
WatchTower combines predictive AI with experienced diesel technicians to monitor every system on your fleet, 24/7. Here’s how we turn streams of raw data into clear, actionable repair plans.
- Data Ingestion – Every mile, every system, thousands of data points from your bus is flowed instantly to the cloud.
- AI Filters & Predicts - Predictive AI analyzes thousands of data points, spotting both current issues and potential failures before they happen.
- Expert Tech Review - Certified diesel technicians validate the AI’s findings, decide what matters, and ignore the noise.
- Actionable Repair Plan - Fleet managers receive clear guidance: urgency level, diagnostic steps, and often part numbers. Everything needed to fix it right the first time.
Choose the Right Tool for Your Mobile Business
From quick code reads to full dealer-level coverage, Diesel Laptops has a solution for every mobile technician.
Diesel Tablet
Truck Only
- Performs all dealer-level diagnostics commands
- Program injectors, VGT actuators, & other components
- 100% coverage of commercial trucks
- Ideal for mobile techs focused on highway trucks
Diesel Handheld Pro
Truck Only
- Affordable, portable, and easy to use
- Read & clear fault codes and access live data
- Perform common resets and regens
- Perfect tool for roadside triage
Combo Kit
Truck & Off-Highway
- Covers on-highway trucks and off-highway equipment
- Only aftermarket kits with OHW repair information
- Rugged laptop pre-loaded with software & cables
- Includes Diesel Repair, tech support, and training
| Handheld Pro | Diesel Tablet | Combo Kit | |
|---|---|---|---|
| Portability | High (Rugged Handheld) | Medium (Larger Tablet) | Low (Laptop) |
| Best Fit For | Roadside Triage / Start Ups | Truck Only Mobile Business | Truck & OHW Mobile Business |
| Device Dependency | Standalone | Standalone | Laptop + VCI |
| Coverage | Commercial Trucks | Commercial Trucks | Commercial Truck & Off-Highway |
| Read/Clear Codes (Trucks) | Yes | Yes | Yes |
| Read/Clear Codes (OHW) | No | No | Yes |
| DPF Regens | Commercial Trucks | Commercial Trucks | Commercial Truck & Off-Highway |
| Aftertreatment Resets (Filters, Derates, Etc.) | Commercial Trucks | Commercial Trucks | Commercial Truck & Off-Highway |
| Change Speeds (Road & Cruise) | No | Yes | Yes |
| All Other OEM Diagnostic Commands | No | Yes | Yes |
| ECM Password Support | No | Yes | Yes |
| Maintenance Resets (Oil Change, Air Filter, Etc.) | Yes | Yes | Yes |
| Repair Information (Diesel Repair) | Not Included | Not Included | Professional Level |
| Tech Support - IT | Yes | Yes | Yes |
| Tech Support – Diesel Techs | No | No | Yes |
| Online Training | Not Included | Not Included | Up to 5 Techs |
| Classroom Training | Not Included | Not Included | Up to 5 Techs |
| Software Updates | Free 1st Year | Free 1st Year | Free 1st Year |
| Pricing Model | Lifetime Full Functionality / Annual for Updates | Lifetime Full Functionality / Annual for Updates | Lifetime Full Functionality / Annual for Updates |
More Than Just a Tool. A Partner in Every Repair.
The right kit gives you more than diagnostics. It gives you the knowledge and backup to handle any job.
Expert Tech Support
Available 6 days a week, our experts handle over 80,000 cases a year. Staffed with 30+ ASE & OEM certified diesel technicians from every industry imaginable.
Diesel Repair Access
The most complete parts & repair data base on the planet. Repair information for every fault code, labor time guides, wiring diagrams, & much more. Available via web, iOS, or Android apps.
Diesel Training
Online and classrooms throughout the United States. Keep your skills on electric, emissions, CAN bus, and everything else.
These services are included with the Combo Kit. Handheld Pro and Diesel Tablet customers may purchase them separately
Nathan Clark, Gearhead Services
“From skidsteers to farm equipment, with Diesel Laptops I can connect to everything. Engine, body controllers, joysticks, calibrations.”
Jeff Sigmon, Mobile Diesel Diagnostics
“My relationship with Diesel Laptops is not only a business relationship, but a personal one too. With Diesel Laptops I can talk to real people who know what they are doing”
Ready to Take Your Mobile Repair Business Further?
From quick code readers to full dealer-level coverage, Diesel Laptops has the right solution to keep you working smarter, faster, and with confidence.