Turn calls, emails + texts into finished work.
Easy to integrate, secure, and made to be customized for your systems and processes.
Measurable ROI in weeks, not months
More importantly, we saw ROI fast - our team found real insights that drove real sales within weeks of getting started. Both the implementation and turnaround of new features based on our feedback have been remarkably quick."
Senior Director, Product Data
The Keycard team have been true partners over the last year — tailoring the platform to our process and delivering on their promises fast.
They get our industry and have built AI that deeply understands our products, not just another company that says 'we use AI'."
Vice President
A phone line that writes the work order for your techs
Techs call in during drive time and talk through the job. AI asks the follow-ups a service writer would, and writes the work order story.
Got it. Now, in one sentence, what was the complaint when you arrived today?
Customer says the dozer derates and throws CA2357 EGR valve servo error when traveling, and it's been a repeat problem.
Thanks. I see prior notes on this work order, most recently on Trip 3, Diagnostics at ECM connector, signal voltage low. Are you closing it out today with a final fix?
Yeah, hopefully. Yeah, we got it.
What did you do today? Give me the steps, but you can talk normal.
Okay. So today was engine harness day. We've been chasing down that EGR servo code. The signal would just drop out.
When you say drop out, what did you see?
The EGR position on the monitor would go dead and the EGR solenoid current would fall off like it lost power or ground.
Understood. Keep going.
We verified drive oil pressure earlier this week. It was good. Today, we didn't replumb gauges again, but I did verify no other faults, then we start tearing into it. Had to pull panels, get in around the ECUs. We pulled the fuel pre filters out of the way so we could actually fish the harness.
Did you replace the engine harness completely or just overlay a section?
Complete harness, whole engine harness.
What was the reason for replacing it? What was your evidence?
Customer reports Komatsu D375A-8 dozer intermittently derates during travel and sets CA2357 - EGR Valve Servo Error.
Intermittent electrical fault in the EGR valve control/feedback circuit. Evidence included signal dropout during vibration/travel.
- Replaced complete engine wiring harness
- Reconnected EGR valve connectors properly
- Cleared faults and verified operation
| Part # | Description | Qty |
|---|---|---|
| 6246-82-5112 | Wiring Harness (Engine) | 1 |
| 02896-21018 | O-Ring | 2 |
Work order stories become searchable repair paths
Your team's biggest asset is decades of experience and knowledge. Keycard makes it effortless to capture, search, and surface what worked last time.
Corroded signal pin in EGR connector. Cleaned pin, re-routed harness. Actuator was fine.
Actuator replaced unnecessarily. Root cause: ECM connector pin backed out ~1mm.
EGR connector lock never engaged after 500-hr service. Vibrated loose over 6 weeks. Single-visit fix.
Effortless Knowledge Capture with a Phone Call
Detailed work order notes read like talking to a colleague. AI asks for the step-by-step that techs don't want to type.
Formatted Like a Knowledgebase Article
Internal notes that Keycard captures are structured and searchable. AI makes decades of repair experience actionable for every tech.
Proactively Shows "What Worked Last Time"
On every new work order, Keycard automatically finds up to 10 relevant past work orders with summaries of key steps taken.
AI that listens to every call and does the paperwork
"This feels like cheating."
Your service writers take the call. Keycard listens, transcribes, and creates a complete service ticket—ready for dispatch.
Good afternoon, service department. This is Brad.
Hey Brad, this is Jeff Morrison with Patriot Contractors. We've got a dozer down at our quarry site.
Hey Jeff. What's going on with it?
It's the big 375. Komatsu D375. It's throwing an EGR code and derating on us every time we try to move it.
Alright, what's the fault code showing?
CA2357. EGR valve servo error. Starts and idles fine, but soon as you travel maybe 20 feet, it derates.
Got it. And this is at Riverside Quarry?
Yeah, 2140 County Road 12. Gate opens at 6. We really need this thing back tomorrow morning—we're dead in the water without it.
Understood. I'll get someone out there first thing. What's the best callback number?
612-541-0188. Or you can reach Ernie on site, he's the superintendent.
Patriot Contractors
Jeff Morrison (Maintenance Foreman)
(612) 541-0188
D375A-8 derates during travel after ~20 ft. Throws CA2357 – EGR valve servo error. Starts/idles normally.
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