# ecuLink FAQ

Frequently asked questions about ecuLink remote J1939 truck diagnostics.

## What is ecuLink?

ecuLink is a remote J1939 truck diagnostics pass-through platform. A small hardware gateway plugs into the 9-pin diagnostic port on a Class 8 truck, and technicians run their existing OEM diagnostic software (JPRO, Cummins INSITE, Detroit DDDL, Volvo PTT, Paccar ESA, CAT ET, Jaltest) over a secure VPN to that vehicle from anywhere.

## How does ecuLink connect to a truck remotely?

The ecuLink gateway has built-in cellular and GPS, so it does not need a driver phone, hotspot, or shop Wi-Fi. It establishes a WireGuard VPN to ecuLink's cloud and exposes itself as an RP1210 or J2534 adapter to your diagnostic software, just like a USB-tethered VCI would.

## Does ecuLink work with the OEM diagnostic software I already own?

Yes. ecuLink presents itself as a standard RP1210 or J2534 interface. Any heavy-duty diagnostic application that supports either of those protocols — including JPRO, Cummins INSITE, Detroit DDDL, Volvo PTT, Paccar ESA, CAT ET, and Jaltest — will work without code changes on the application side.

## Which trucks does ecuLink support?

ecuLink supports Class 8 trucks built since 2007 with J1939 networks, including Cummins ISX/X15/ISB/ISL, Detroit DD13/DD15/DD16, Paccar MX-11/MX-13, Volvo D11/D13, Mack MP7/MP8, Navistar N9/N13/A26, and CAT C13/C15. Pre-2007 vehicles are supported via legacy J1708.

## Is ecuLink secure?

Yes. Every diagnostic session is tunneled through a per-device WireGuard VPN with mutual authentication. Sessions are short-lived, scoped to a single user and a single vehicle, and audit-logged. Credentials and session keys are stored encrypted at rest, and the gateway exposes no inbound services on the public internet.

## Does ecuLink require a driver phone or hotspot?

No. The ecuLink gateway is fully self-contained, with its own cellular modem and GPS receiver. Drivers do not have to install an app, share a hotspot, or do anything during a diagnostic session — the device works whenever the truck has key-on power, even when parked.

## Which diagnostic tools work with ecuLink?

ecuLink is verified with Noregon JPRO, Cummins INSITE, Detroit DDDL, Volvo PTT, Paccar ESA, CAT ET, and Jaltest. Any other heavy-duty diagnostic application that targets RP1210 or J2534 should also work — if your application can talk to a USB VCI today, it can talk to an ecuLink gateway over the network.

## Does ecuLink work with pre-2007 trucks?

Yes, via the legacy J1708 protocol. Trucks built before 2007 generally do not have full J1939 stacks, so we route diagnostic traffic over J1708 instead. This covers older Cummins, Detroit, CAT, and International engines that are still common in working fleets.

## What is the difference between RP1210 and J2534?

RP1210 is the heavy-duty truck industry's API for diagnostic adapters; it is what tools like JPRO, INSITE, and DDDL use. J2534 is the equivalent for light-duty and passenger vehicles, and is also used by some HD tools that target ECU reprogramming. ecuLink presents both interfaces, so the same gateway works across both worlds.

## Does ecuLink work with electric and hybrid trucks?

ecuLink supports any vehicle that exposes a standard 9-pin diagnostic connector and J1939 traffic, which includes most Class 7 and 8 hybrid and battery-electric trucks shipping today. For OEM-specific high-voltage diagnostic stacks, please contact our team to confirm coverage of the specific platform you operate.

## Can I use ecuLink for ECU reprogramming and flashing?

ecuLink is a transparent diagnostic pass-through, so reprogramming works as long as your OEM tool supports remote VCIs over RP1210 or J2534. Flash sessions are sensitive to network latency, so we recommend confirming the workflow with our team before standardizing on remote flashing for your fleet.

## How do I find truck repair shops near me?

The ecuLink Repair Directory is searchable by city, state, ZIP, and service category (truck repair, towing, diesel engine, tire service, transmission, electrical, parts, trailer). Every listing includes contact details, hours, and the services that shop offers, with no sign-in required to browse.

## Which repair services are listed on ecuLink?

Listings cover heavy-duty truck repair, mobile and on-highway towing, tire service, diesel engine repair, transmission and driveline work, electrical and electronic diagnostics, parts retailers, and trailer repair. We focus on Class 7 and 8 commercial vehicles rather than passenger cars.

## How can a repair shop get listed?

Shop owners can submit a listing for free using the Add Your Business button on the directory page. We review every submission to confirm the business is real and the contact information is accurate, then publish it once it passes review.

## Are listings reviewed before publication?

Yes. Every submission goes through manual review before going live. We verify that the business exists, the address is real, and the contact information matches public records. Listings that fail review are not published and the submitter is notified by email.

## What types of trucking jobs are listed on ecuLink?

The Jobs Directory covers CDL Class A and B drivers, diesel mechanics and technicians, dispatchers, fleet managers, owner-operator opportunities, parts specialists, and warehouse and logistics roles. We focus on commercial trucking and fleet operations rather than rideshare or last-mile gig work.

## How can fleets post jobs?

Fleet operators and shops can post a job for free using the Post a Job button on the Jobs page. After a short review, the listing goes live with a public URL that can be shared on social media, in driver groups, or distributed by recruiters.

## Are job posts reviewed before publication?

Yes. We manually review each job to make sure the employer is legitimate, the job description is specific, and the compensation, location, and CDL requirements are clearly stated. Jobs that look like recruiter spam or that hide pay are not published.

## How long do jobs stay listed?

Each posting stays live for 30 days by default. Employers can refresh, extend, or close a posting at any time from their dashboard. Once a job expires or is closed, the URL returns a clear 'no longer accepting applications' state and is removed from search results.

## How is ecuLink different from a telematics platform like Samsara or Geotab?

Telematics platforms record and report fleet data — locations, fault codes, hours of service. ecuLink is a live diagnostic pass-through: it does not just report fault codes, it lets a technician run the OEM diagnostic tool against the vehicle in real time, including bidirectional commands, parameter writes, and (where supported) reflashing.

## Can multiple technicians share a single ecuLink device?

Yes. Each ecuLink gateway is bound to a fleet or shop account, and any authorized technician on that account can request a session. Sessions are exclusive while in progress — only one diagnostic tool can be connected at a time — but ownership of the device is shared.

## How is data billed — is there a per-session fee?

ecuLink uses a flat monthly subscription per device that includes cellular data, VPN, and platform access. There are no per-session, per-minute, or per-megabyte fees. Hardware is included in the base plan; see the pricing page for current tiers.

## What happens if the truck is parked or out of cell coverage?

The gateway requires key-on power and a cellular signal. If the truck is parked with the key off, the device sleeps and is unreachable. If the truck is in a dead zone, sessions cannot start until coverage returns. Once power and signal are present, the device reconnects automatically.

## Does ecuLink support European or Asian trucks?

ecuLink targets the North American Class 8 market today. The hardware speaks J1939 and J1708, which are global standards, so it physically works on most foreign-made tractors. Software-side support for European or Asian OEM diagnostic suites is evaluated on request.