Introducing Lattice: the AI investigation platform for manufacturing.Read the post

Suppliers to automotive OEMs

Answer OEM complaints and 8Ds in days. Keep the next sourcing round clean.

For customer quality, field quality and warranty teams at suppliers to automotive OEMs. Lattice investigates every complaint from your own records, fills your OEM's 8D with a source on every line, and carries each proven cause to your sister plants.

CQ-2026-0418 · Valve body pressure drop · Customer AD3 due in 16h
ConductorCQ-2026-0418
Read the OEM's complaint and 14 return photos00:02
Pulled traceability for lots 2409-A to 2409-D00:06
Matching your plants: 2 cases at Plant BPrecedent · now
Writing D4: why it was made, why it escapedCustomer A 8D · now
Needs youAccept the drafted containment: sort 1,120 units at 100% leak test?AcceptEdit
Customer A 8D · v31 line has no sourceDraft
D2 ProblemComplaint packet
Pressure drop at Customer A's end-of-line test: 14 units from lots 2409-A to 2409-D.
D3 ContainmentTraceability
Lots 2409-A to 2409-D quarantined; 1,120 units sorted at 100% leak test.
D4 Why it was madeWriting
Seat burr after tooling change TC-0914 on seat finish OP30
D8 Sign-offKept for a person
Your engineer signs

Everything your OEM sends comes with a clock.

Same shiftLine-side and 0 km rejectsContainment at the OEM's line before the next shift ships.
24 hours8D requestThe OEM's template, its deadline and its SQE's follow-up questions.
WeeksWarranty claimsField returns, with the chargeback already attached.
Next repeatControlled shippingA second escape puts extra inspection on your account.
Next auditIATF 16949 findingsFindings against your problem-solving process.

Conductor works the complaint. While you're on the floor.

ContainmentConductor drafted 3
Containment required?Yes
Quarantine lots 2409-A to 2409-D in finished stockDrafted
Sort 1,120 units at 100% leak testDrafted
Hold 2 shipments at the OEM's warehouseFrom the complaint
Corrective and preventive actions unlock when containment is resolved.

Containment scoped from your traceability. Drafted from the lots that carry the defect, so you sort what you must, not the warehouse.

Precedent
Likeliest match
Solenoid seat burr after a tooling changeInvestigation
Plant B · closed 12 Mar 2025 · fix in place
Recurrence of thisNot the same
Other sites · 1
Leak at valve body seat
Plant C · countermeasure not verified
FMEA rows · 1
Seat finish: burr not removedFMEA
PFMEA line 2 · S 8 · O 3 · D 4

Catch the repeat before controlled shipping does. Past 8Ds, sister plants and PFMEA rows, compared shortly after the case opens.

Customer A 8D · v31 line has no sourceDraft
D3 ContainmentTraceability
1,120 units sorted at 100% leak test; 96% complete.
D4 Why it escapedWriting
Leak-test threshold raised above spec at the 12 Sep recalibration
D8 Sign-offKept for a person
Your engineer signs

The OEM's 8D, in the OEM's template. Upload the form once. Conductor fills it, flags anything without a source, and leaves the sign-offs to you.

Valve body seat finish · Line 2v2.1 → v2.2
Failure modeSODRPNSeat burr not removed856240Seat burr not removed83372
New control: first-piece leak test after every tooling change, at the spec limit.
Update library FMEANot now

Every proven cause updates the PFMEA. The row is revised with its new S, O and D, for your sister plants to pick up.

Close the complaint before it compounds. Then it keeps paying back.

Every week a complaint stays open adds a line to the P&L: the sort, the engineers, the second escape, the scorecard and the chargeback.

Your complaints a month, hours per complaint and chargeback exposure, priced on the home page.Price it for your team
Answers in the form your OEM asks forYour OEM's 8D templateCARPFMEAIATF 16949 auditsExcel and PowerPoint

Questions automotive suppliers ask.

What does Lattice do for automotive suppliers?

Lattice investigates OEM complaints and field returns from your own records, fills your OEM's 8D with a source on every line, and carries each proven cause to your sister plants.

Can Lattice use our OEM's 8D template?

Yes. Upload the template once. Conductor, Lattice's AI quality engineer, fills it from the case, flags anything without a source, and leaves the sign-offs to you.

How does Lattice help avoid controlled shipping?

Past 8Ds, sister plants and PFMEA rows are compared shortly after the case opens, so a repeat is matched before a second escape puts extra inspection on your account.

How does Lattice help with IATF 16949 audits?

Every case keeps its evidence cited line by line, and every proven cause updates the PFMEA, so the auditor can see how the last finding was closed.

Try Lattice free on a complaint you already closed.

Ten business days, at no cost. Your engineers try Lattice on a real complaint: one your team already closed, or a guided sample complaint if you'd rather not share data. Nothing to install and no live integrations.

  1. 01Pick a complaintOne your team already closed, under NDA and a data protection agreement. Or our guided sample complaint, with no data shared.
  2. 02Watch Lattice work itIn an isolated workspace, your engineers watch the evidence, the hypotheses and the filled 8D build up.
  3. 03Compare, then decideSide by side with what you sent your customer: time to root cause, evidence cited, escape point found. Then a paid pilot on live complaints, with success criteria agreed in writing.

Licensed per site, not per seat. R&D, manufacturing and sister-plant colleagues join any investigation at no additional cost. Support, updates and integration maintenance included.