AI troubleshooting agent for maintenance teams | Quintess
Live with fleet and field maintenance teams in the US and Europe
Get equipment back in service without waiting on your best technician.
Quintess works the hardest faults with your technicians using your manuals, schematics, and maintenance history. By voice, at the equipment, without stopping the job to type or scroll.
Quintess mobile Live voice
Door three shows open even when it's closed.
Check relay K17 first. Read me the voltage at terminal 4.
Voice-first
Talk while your hands stay on the job.
Source-backed
Manuals, schematics, and fleet history.
Asset-aware
Knows what happened on this exact unit.
Expert in the loop
Escalates cleanly when confidence is low.
The down list waits on a few people.
Hard faults do not move at the speed of the team. They move at the speed of the handful of technicians who know where to look.
Few technicians can work a hard fault.
Troubleshooting is its own skill, and in most teams only a few people have it. Everyone else calls for help.
Downtime accrues while the down list grows.
Most of the downtime on a hard fault is spent finding the cause, not fixing it. While the diagnosis waits, availability drops and overtime and penalties pile up.
Parts get swapped blindly under service pressure.
Most likely this, so we'll swap it out. The part comes off. The fault comes back a week later because the root cause was never isolated.
Documentation fails at the moment of need.
The fix is almost always documented. It's just spread across thirty manuals, a schematic, and this unit's history. Nobody has time to dig mid-repair
Troubleshooting today
- Wait for the one technician who knows this fleet cold
- Swap the likely part and hope
- Lose hours in manuals and unreadable schematics
- Leave no trace of the fix for the next shift
- See the same fault come back a month later
With Quintess
- Describe the fault by voice, at the equipment
- Rank probable causes from manuals and fleet history
- Run the cheapest checks first, before teardown
- Find the part number in seconds, not hours
- Capture every confirmed fix for the whole team
How the agent works
One hard fault, worked start to finish.
The technician talks. Quintess talks back. Hands stay on the job and the diagnosis keeps moving. Chat is there for technicians who prefer it.
Voice at the equipment
The manual, the schematic, and this unit's history in one conversation.
No search tree. No stopping to type. Tell Quintess what you see, what you hear, and what you have already checked.
Describe the fault like you'd tell a coworker.
"It’s doing the thing again" is a fine starting point. Quintess asks the right follow-up questions and speaks your fleet’s language.
It knows this exact unit.
Before suggesting anything, it pulls the asset’s fault history, recent parts changes, and completed maintenance.
Probable causes, ranked.
Your manuals, known OEM failure modes, and your own fleet history shape the list. The technician’s read comes first.
Cheapest checks first.
Measurements before teardown. Teardown before parts. Quintess gives the expected tolerance and interprets the reading to choose the next step.
It finds the part.
Describe it or point to it in the diagram. Quintess finds the part number and current alternatives across catalogs and past work orders.
It knows its limits.
Low confidence triggers a clean expert handoff with everything tried and ruled out. The next shift picks up mid-diagnosis, not from zero.
The app
Watch a fault get worked.
From the first voice note to a confirmed root cause, the technician stays in the loop while Quintess pulls the evidence together.
Quintess AI Troubleshooting Agent — live demo
CR
Chris R.
Faults
Inspections
Planner
Open faults
12 open · 3 hard down
Engine overheat · shutdownCRITICAL
GILLIG Phantom · Bus 90862
6 active codes · hard down 2 days
✦ Troubleshoot with AI
ABS lamp on
New Flyer Xcelsior · Bus 90845
Near urgent · in service
A/C not cooling
GILLIG Phantom · Bus 90862
Low · deferred
‹
Bus 90862 · engine overheat
GILLIG Phantom
◟
Bus 90862 keeps overheating and shutting down. Six codes up.
Voice note · 0:07
Troubleshooting agent
Pulling work orders, codes and manuals…
6 active fault codes
2322 · 2646 · 2963 · 0151 · 0778 · 0555
Cluster points to cooling / fan drive, not the engine core.
Recent work · PM-A, 6 days ago
Hydraulic filter replaced. The cooling-fan hydraulic circuit was opened.
Most likely causes
From 47 past faults + GILLIG manuals
Restricted flow to fan motor58%
Fan can't reach full speed
Thermostat stuck closed21%
Would also cause overheat under load
Fan PWM control signal9%
Controller commands low duty cycle
First — what are you seeing?
Your read guides the plan. Does the fan spin up under load?
Yes, fullWeak / slowNot sure
Step 3 of 6Isolate the fan drive
Measure fan supply pressure
Engine at operating temp. Command 100% fan in INSITE, then read the pressure at the fan-motor test port and enter it below.
EXPECTED AT FULL COMMAND
1,800 – 2,200 psi
YOUR READING
psi
Below spec
That's well under spec — a restriction between the pump and fan motor. Next: inspect the filter that was just serviced.
Hydraulic system schematicService manual · p315
✦
The fan is hydraulically driven: the pump (B) feeds the fan control valve (E) and fan motor (C), then the cooler (G). A clogged or inverted return/charge filter chokes this loop, so the fan can't reach full speed.
Root cause confirmed
Verified fixed on road test
Root cause
Hydraulic filter installed upside-down at the PM 6 days ago, restricting flow to the cooling-fan motor. Fan couldn't reach full speed, so the engine overheated.
Work order note · auto-drafted✦ AI
COMPLAINT
Check/stop engine, overheating; 6 active codes.
CAUSE
Restricted hydraulic flow to fan motor — PM filter fitted inverted; degraded fluid; thermostat.
CORRECTION
Refit filter, replaced fluid + thermostat, cleared codes, verified fan 100% + temp stable on road test.
Edit
Post to CMMS
Under the hood
How Quintess knows what the manual does not.
The agent starts with your documented record. Then it captures what your fleet learns while hard faults are being fixed.
We index your documents.
Manuals, parts catalogs, fault isolation procedures, and schematics in any format, for every OEM in your fleet.
We pull your maintenance records.
Work orders and fault history from your EAM or CMMS show what has already been tried on this exact asset.
KNOWLEDGE CAPTURE
We capture what your experts know.
Your best technicians talk to Quintess while they work complex faults. Knowledge that lives in a few heads gets captured on confirmed fixes and becomes available to the whole team at 2AM.
Every session writes a clean, structured report that builds your knowledge base
Why it changes the game.
Faster time to fix.
Cut duration on the complex faults that keep equipment out of service, the work that actually moves availability.
No more repeat failures.
Root cause gets isolated and recorded, so the same fault stops coming back and parts stop being consumed for nothing.
Expertise that stays.
New technicians ramp with the knowledge of your best people from day one, and that knowledge stops walking out the door.
Built for maintenance operations
Fleets: rail, buses, automotive. Facility and field maintenance.
Working today with maintenance teams across rail, bus, and industrial operations in the US and Europe.
Works with your EAM or ERP
Quintess fits the system your maintenance operation already uses. No rip-and-replace.
iOS and Android
Built for the shop floor. Mic at arm’s length, gloves on, and shared devices in the workshop.
How we start
Start with the maintenance record you already have.
No new documentation project. Start with the manuals, schematics, and work-order history your team already uses.
Share your documents and history.
Manuals, schematics, parts catalogs, and work-order exports. Any format, including scans.
We index your fleet.
Every OEM, every asset type, plus the fault history on each unit.
Your technicians talk to it.
At the equipment, on the app, from the first week.
Bring a real fault to the demo.
Operational FAQ
What maintenance and IT teams ask first.
What is Quintess?
Quintess is a voice-first AI troubleshooting agent for fleet and field maintenance teams. It helps technicians diagnose difficult equipment faults using approved manuals, schematics, maintenance history, and expert knowledge.
Who is Quintess for?
Quintess is built for technicians, maintenance managers, and subject-matter experts who diagnose and repair complex fleet or field equipment.
How does Quintess troubleshoot equipment faults?
A technician describes the fault by voice. Quintess grounds its guidance in approved maintenance sources, asks for observations and measurements, cites the supporting evidence, and escalates to an expert with a clean summary when confidence is low.
Does it work with our EAM or CMMS?
Yes. Quintess reads your work-order history and fits the system you run today. There is no rip-and-replace requirement.
What do you need from us to start?
Your maintenance documents and a work-order export. That includes manuals, schematics, parts catalogs, procedures, and the fault history you already have.
Does it replace our expert technicians?
No. Your experts stay in the loop. When confidence is low, Quintess escalates with a clean summary of everything tried and ruled out. Confirmed fixes also capture what your experts know for the rest of the team.
iOS or Android?
Both. The app is built for the shop floor, including shared devices, gloves, and voice use at arm’s length.
What about scans, foreign-language schematics, or paper documents?
That is normal, not an exception. Quintess works with degraded scans, paper records, and schematics in other languages alongside your cleaner digital files.
How is our data protected?
Customer data is isolated by tenant and never used to train anyone else’s agent. Read the full security and privacy controls in the Trust Center.
Who controls what technicians and contractors can see?
Role-based permissions control access for technicians, managers, experts, and contractors so each person sees only the information intended for their work.
Maintenance has been the poor child of industrial operations.
Quintess was built by people who spent careers running maintenance and operations teams. Trains down because nobody could find the part. The senior technician needed in five places at once. End-of-shift paperwork nobody trusts.
“We’re building the product we wished we’d had.”
Zach Esmili
Founder & CEO
See Quintess in action
Put Quintess to work on your hardest faults.
Book a demo to see how our AI Troubleshooting Agent works with your maintenance data, technicians, and existing systems.