Find the OEM procedure. Then cite it, line by line.
Almost every supplement argument ends the same way: whoever has the current automaker procedure in writing wins. This is the directory we work from — the official repair information portal and collision position statements for each manufacturer, straight from the source.
Cross-maker hubs
When you don't know which portal holds the answer, start with these. OEM1Stop indexes every manufacturer site; I-CAR RTS collects the position statements themselves.
OEM1Stop
OEM1Stop — all-maker service info directory
Automaker-maintained index of every OEM service information site, including subscription pricing.
I-CAR RTS
I-CAR Repairability Technical Support (RTS)
Searchable library of OEM collision repair position statements by automaker.
SCRS
Society of Collision Repair Specialists
Industry advocacy group publishing guidance and documentation resources on not-included operations.
NHTSA
NHTSA recall & complaint database (VIN lookup)
Check open recalls and TSBs by VIN before finalizing a repair plan. Some corporate networks block .gov lookups — open it from a phone if it stalls.
Repair information by manufacturer
Each link goes to the automaker's own service information site. Most require a short-term subscription — day passes are typically the cheapest way to pull a single procedure, and the cost is a documentable line on the repair.
Acura
Acura Service Express
Body repair manuals, position statements, ADAS calibration requirements.
Audi
Audi erWin (US)
Repair manuals, welding/bonding specs, structural repair limits.
BMW
BMW AOS (Aftersales Online System)
Body repair, pre/post scan and calibration documentation.
Chevrolet / GM
GM Service Information (via OEM1Stop)
GM position statements, sectioning procedures, pre/post repair scan policy.
Chrysler / Dodge / Jeep / Ram
Stellantis Tech Authority
Body/structural procedures, restraint system service, scan requirements.
Ford / Lincoln
Ford Motorcraft Service (PTS)
Workshop manuals plus Ford's collision repair position statements.
Honda
Honda Service Express
Body repair news, position statements, ADAS aiming procedures.
Hyundai
Hyundai Tech Info
Body repair manuals, welding specs, calibration procedures.
Kia
Kia Global Information System (KGIS)
Body repair, refinish, and diagnostic scan procedures.
Mazda
Mazda Service Info
Collision repair manuals and OEM parts position statements.
Mercedes-Benz
Mercedes-Benz WIS / XENTRY
Workshop information system, structural repair and calibration docs.
Nissan / INFINITI
Nissan Tech Info
Electronic service manuals, body repair, ADAS calibration.
Subaru
Subaru Tech Info
Body repair manuals plus Subaru scanning and glass position statements.
Tesla
Tesla Service
Collision repair procedures, approved materials, and structural bulletins.
Toyota / Lexus
Toyota Tech Info (TIS)
Collision repair information, position statements, calibration requirements.
Volkswagen
Volkswagen erWin (US)
Repair manuals, weld/rivet-bond specs, structural repair limits.
Volvo
Volvo Technical Information Shop (TIS)
Body repair, high-strength steel restrictions, calibration procedures.
How to document a procedure so it survives review
01
Start from the VIN, not the year/make/model
Build, trim, and options change the procedure. Pull the VIN-specific repair manual so the operation you cite matches the car in the stall.
02
Print the procedure with the date visible
OEM sites update quietly. A dated printout is what makes the position defensible weeks later when the adjuster pushes back.
03
Separate the procedure from the position statement
The repair manual says how. The position statement says the automaker requires it. Supplements land faster when you attach both.
04
Attach it to the line, not the file
Every not-included operation on the supplement should point to a specific page or paragraph. That's the whole argument.
Send us the VIN. We'll send back the procedure.
Procedure lookup is part of every Discovery Review and every supplement package we build — pulled current, dated, and attached to the specific line it supports. If you just need one document for a car in the stall, email the VIN and the operation in question.
Automakers revise procedures and position statements without notice. Always verify against the live OEM portal on the day of the repair — the links here point to the source of record, never to a cached copy.
Verify · Date · Attach