AUTODEFECT.ORGBMW HVAC EVAPORATOR REGISTRY · INDEPENDENT
Redacted repair documents beside a laptop during evidence review
OWNER GUIDE

What to Preserve Before Authorizing an Expensive HVAC Repair

The strongest registry records were assembled before the repair, not reconstructed after it. This checklist covers what to preserve or request — when available — so your case can be classified at the highest evidence level it deserves.

ADD YOUR CASEHOW A LEAK IS DOCUMENTED

LIMITATION — Do not delay a repair that is necessary for safety or vehicle operation solely to preserve evidence.

Published: August 8, 2026Last reviewed: August 8, 2026Compiled by: AutoDefect.org Registry EditorSources last checked: August 8, 2026CorrectionsManufacturer right of reply
THE PRESERVATION CHECKLIST

Preserve or request, when available

Dated repair order
Vehicle mileage on every document
Exact written diagnosis
Diagnostic method used
Recovered / charged refrigerant quantity if documented
Photographs or video
Dealer and independent estimates
Labor hours if actually shown
Original component part number if documented
Replacement part number
Supersession notation if present
Warranty determination
Goodwill correspondence
Dealer contribution
Final invoice
Removed component or photographs, if shop policy permits
Relevant dates and communications
IMPORTANT OWNER GUIDANCE

Evidence never outranks safety or service

Do not delay a repair that is necessary for safety or vehicle operation solely to preserve evidence. Ask the repair facility what can reasonably be documented or preserved without interfering with service, warranty procedures or required parts returns.

Most facilities will note recovered refrigerant quantities, test methods and part numbers on the repair order if asked before work begins. Asking costs nothing; the resulting document can be the difference between a Level D and a Level A record.

WHAT HAPPENS TO YOUR DOCUMENTS

Uploads stay private until reviewed. Published copies are redacted derivatives — no name, contact details or full VIN. You approve publication; consent can be withheld or withdrawn.

Documents in hand? Twenty minutes.

The intake walks through vehicle, diagnosis, costs and outcomes, and saves a draft in your browser as you go.

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