AUTODEFECT.ORGBMW HVAC EVAPORATOR REGISTRY · INDEPENDENT
REPORT A FAILURE
Specialist reviewing case records on a tablet beside a vehicle in a dark workshop
INDEPENDENT CONSUMER EVIDENCE PROJECT

DOCUMENT THE FAILURE.
PRESERVE THE EVIDENCE.
MEASURE THE TRUE COST.

An independent consumer evidence registry documenting HVAC evaporator diagnoses, repair expenses, mileage at failure, warranty outcomes and goodwill decisions involving BMW vehicles.

REPORT A FAILURE BROWSE DOCUMENTED RECORDS
Independent consumer evidence registry. Not affiliated with, sponsored by, authorized by, operated by, or endorsed by BMW AG, BMW of North America, LLC, or any BMW dealership.

CURRENT DOCUMENTED REGISTRY DATA

METHODOLOGY →
1
SUBMISSION ON FILE
3
DIAGNOSTIC EVALUATIONS
$1,300+
REPORTED DIAGNOSTIC COST
$5,012.54
PRE-REPAIR DEALER ESTIMATE
20%
BMW NA GOODWILL APPLIED
$2,488.34
OWNER-PAID AFTER GOODWILL

Registry statistics describe submitted records and do not establish manufacturer-wide incidence or failure rates. Figures are manually updated from approved public records. Last reviewed August 18, 2026.

Redacted repair invoice and key fob beside a laptop uploading evidence to the Registry
WHY THE REGISTRY EXISTS

Individual reports are fragmented. Structured records can be compared.

Vehicle problems are usually documented one service visit, repair order, estimate and invoice at a time. AutoDefect organizes those records into a consistent public framework so submitted cases can be compared as the Registry grows.

Records are organized for owners, technicians, researchers, journalists, regulators and other readers evaluating the documentary record.

HOW RECORDS ARE REVIEWED →
SYMPTOMS & DIAGNOSIS

Symptoms reported in cases later diagnosed with refrigerant loss

01
Uneven cooling
One side or climate zone may feel colder than another. Uneven vent temperature can occur with low refrigerant and several other HVAC faults; it is not specific to an evaporator leak.
02
Progressive capacity loss
Cooling may decline progressively when refrigerant is being lost; the timing and presentation vary by vehicle and failure mechanism.
03
Repeated recharges
A recharge may temporarily improve cooling when the system is undercharged. If refrigerant is being lost, the leak source still requires diagnosis and repair.
04
Leak traced to the evaporator
A professional diagnosis may rely on recovered refrigerant quantity, electronic detection, dye where appropriate, pressure testing or inspection. The Registry records the method and the written conclusion.
05
Dashboard-out replacement quote
Because the evaporator is located deep within the HVAC assembly, access and reassembly can be a major part of the repair scope.
Cutaway illustration of a dashboard showing the HVAC box, blower and evaporator core with a highlighted refrigerant leak
Independent illustration. Not a BMW service diagram.
Technician connecting an R-1234yf recharge station to a luxury SUV in a dark workshop
THE RECHARGE CYCLE

A recharge may temporarily restore cooling. If refrigerant is being lost, the source still requires diagnosis and repair.

Keep every recharge invoice — repeat service visits are part of the documentary record.

THE COST OF A DASHBOARD-OUT REPAIR

Why access and disassembly can drive evaporator replacement cost

Because the evaporator sits at the center of the HVAC assembly, replacement requires dashboard removal. Founder-case figures, from dealer documents on file — the repair is now complete:

Diagnostic evaluations (3)$1,300+
Dealer replacement estimate$5,012.54
Repair scopeDashboard/HVAC access included
BMW NA goodwill applied at repair20%
Documented owner-paid amount$2,488.34
Technician extracting the HVAC housing through the door opening of a fully disassembled dashboard

How records are reviewed

FULL METHODOLOGY →
A
Confirmed repair

Written diagnosis plus documentation showing evaporator replacement or repair. Supporting documents are manually reviewed; published copies are redacted derivatives.

B
Confirmed diagnosis

A written diagnosis identifies evaporator leakage or failure; the repair itself may still be pending.

C
Strongly supported

Consistent indicators and documentation without a definitive written diagnosis. Levels D–E cover owner-reported and alternative-diagnosis cases.

RECENT RECORDS

BROWSE THE REGISTRY →
Illustrative close-up of an evaporator core with a highlighted potential leak area
BMW-HVAC-2026-4H9X2Q · FOUNDER CASE
2020 BMW X5 sDrive40i · G05
≈63,400 MILES FRESNO, CA LEVEL A — CONFIRMED REPAIR
STATUS
Repair completed — August 18, 2026
BMW Fresno · evaporator replaced · post-repair test passed
SYMPTOM
Progressive cooling failure
DIAGNOSTICS
3 evaluations · $1,300+
PRE-REPAIR ESTIMATE
$5,012.54 · BMW Fresno
BMW NA GOODWILL
20% · applied at repair
OWNER PAID
$2,488.34
INSTALLED PART
Evaporator 64115B3A5E0
Public summary approved for publication in sanitized form. Full VIN never displayed. VIEW CASE TIMELINE →
BROWSE BY MODEL X5 · G05 (1) Your model missing? Add the first record →
Macro of a premium dashboard air vent above a blue ambient light strip

YOUR RECORD STRENGTHENS THE EVIDENCE.

Twenty minutes with your documents. Not publicly published by default. You decide whether a sanitized case record may be published.

REPORT A FAILURE
Electronic leak detector, digital manifold gauge and diagnostic tablet on a workbench Methodology Evidence levels, verification steps, data dictionary and limitations. READ → Repair documents under review on a lamp-lit desk Media & citations Fact sheet, aggregate statistics and how to cite Registry data. OPEN → Service advisor reviewing a repair estimate on a clipboard beside a tablet Case timeline The founder case, event by event, with documents referenced. VIEW → Technician reviewing diagnostic readings on a tablet beside an SUV with its hood open BMW right of reply BMW of North America may respond to any published record; substantive responses may be published alongside it after authenticity, privacy and legal review. RESPOND →
THE EVIDENCE ARCHITECTURE

From symptom to regulatory record, without leaving the evidence.

Every page below is source-annotated and cross-linked: symptom → differential diagnosis → documented diagnosis → source → part → cost → case evidence → BMW outcome → manufacturer communication → public record.

PILLARBMW HVAC Evaporator Evidence CenterThe hub: symptoms, differential diagnosis, costs, parts, communications, NHTSA records and methodology in one framework.OPEN → MODEL NODEX5 G05 Evidence RegistryReviewed G05 cases, cost layers, goodwill activity, part numbers and community threads — every count labeled n=.OPEN → DIAGNOSISDriver Cold / Passenger WarmWhat the most-reported symptom can mean — and the evidence that raises or lowers each hypothesis.OPEN → DIAGNOSISHow a Leak Is DocumentedRecovered refrigerant, electronic detection, dye, pressure tests — and what a written diagnosis should contain.OPEN → COSTSX5 Replacement Cost IntelligenceCommercial benchmarks, documented estimates, completed invoices and owner-paid outcomes — never blended.OPEN → PARTSPart Number & Supersession Tracker64119496922 → 64115B3A5E0, with VIN-verification caveats and registry-document counts.OPEN → PUBLIC RECORDBMW Recalls Since 2010PCV heater, EGR cooler, Takata, water pump — how safety defects surface and expand, source-linked.OPEN → PUBLIC RECORDLitigation & SettlementsBang, Gelis, Takata, Rickman — what each settlement did and did not establish.OPEN → PUBLIC RECORDNHTSA Records ExplorerComplaints, investigations, recalls and manufacturer communications — kept separate from registry cases.OPEN → SOURCESEvidence & Source LibraryThirteen classified sources: what each establishes, and what it does not.OPEN → INTEGRITYWhen It Isn’t the EvaporatorAlternative diagnoses, preserved — the difference between advocacy and evidence.OPEN → OWNER GUIDEEvidence Preservation GuideWhat to preserve or request before authorizing an expensive HVAC repair.OPEN →