Guides & know-how for the trade
Straight-talking guides on FCC IDs, key programming, transponder chips, fob batteries, cross-references and smart stocking — written by and for working locksmiths.
The Automotive Key Glossary
41 trade terms defined properly — FCC IDs, transponder chip families, PEPS, rolling code, all keys lost and the rest of the language of the job.
Volvo Key Fob Replacement: Fob Types, FCC IDs and Part Numbers
Volvo fobs by generation: Fobik, flip key and Keyless Drive smart keys, with FCC IDs, chips, frequencies and original part numbers.
Lishi HU66, TOY43, TOY48 & KW1: Which Original Lishi Pick Fits Which Vehicle
HU66, TOY43, TOY48 and KW1 explained: which vehicles each Original Lishi 2-in-1 covers, common mistakes, and how to match the fob.
How to Identify a Key Fob: Lookup by VIN, FCC ID, Part Number or Photo
A VIN alone won't give you the exact key fob. Here's how locksmiths actually confirm a match using FCC ID, part number, and photo matching.
Mazda Key Fob Battery Replacement: Every Fob Generation, Step by Step
How to open a Mazda flip key or smart key fob, replace the CR2032/CR2025 battery, and get the remote working again without cracking the case.
Mercedes-Benz Key Fob Battery Replacement: Every Fob Generation, Step by Step
A generation-by-generation guide to changing a Mercedes-Benz key fob battery, plus what it means if the fob still won't work afterward.
All Keys Lost by Make: What You Need Before You Roll the Van
All-keys-lost requirements by make: Lishi decode, PIN or security access, SGW bypass, tool AKL coverage and the right fob, Toyota through BMW.
Dodge, Ram, Jeep & Chrysler Key Fob Replacement: Fobiks & Smart Keys
Dodge, Ram, Jeep, Chrysler and Fiat key fob replacement: Fobik and smart key generations, FCC IDs by model, ID46 vs ID4A, SGW programming and stocked parts.
Hyundai & Kia Key Fob Replacement: Chips, FCC IDs & OEM Options
Hyundai and Kia key fob replacement by generation: which chip, which FCC ID and 95440 part number, programming routes and genuine OEM Elantra options.
Nissan & Infiniti KR5 Smart Keys: KR5S180144, KR5TXN by Year
Nissan and Infiniti KR5 smart keys by year, S180144 number, buttons and chip, with the CWTWB1U keys that came before them.
Lincoln Key Fob Replacement: FCC IDs, Frequencies & Programming
Which Lincoln fob fits by FCC ID, frequency and 164-R or 15K601 part number, and how each Ford-family generation programs.
Universal Remote or Vehicle-Specific Fob? How Locksmiths Decide
When a universal Xhorse, KEYDIY, Lonsdor or Autel remote beats a vehicle-specific fob, and when it does not: tool, coverage, chips, look, guarantee.
Key Fob Won't Program: A Locksmith's Checklist Before Blaming the Part
Ten checks for a key fob that will not program: FCC ID, frequency, chip generation, used smart keys, key count, tool coverage, SGW, battery, placement, PIN.
Chevrolet & GMC Key Fob Replacement: OUC, HYQ & Global B Fobs
Chevrolet, GMC and GM truck key fob replacement: which system the vehicle uses, FCC IDs by year and model, 315 vs 433 MHz, and how each programs.
Car Key Supply for US Locksmiths: Domestic Dispatch From Florida
US locksmiths buy car keys wholesale from the Florida warehouse in USD, no customs. Dispatch by 4 PM ET, standard 3–5 business days, free freight over $250.
Cadillac & Buick Key Fob Replacement: FCC IDs & Programming
Cadillac and Buick fobs sorted by FCC ID, GM part number and chip, with the remote-vs-smart-key split and programming routes.
Mitsubishi Key Fob Replacement: ID 46 Keys & OUC644M Smart Key
Mitsubishi key fob replacement for 2004–2020: ID 46 MITS transponder keys, the OUC644M-KEY-N smart key on 315 MHz, one genuine OEM Outlander key, and sourcing.
How to Open a Wholesale Car Key Account: What Suppliers Check
What wholesale car key suppliers check before approving a locksmith account, the four fields Car Key Source asks for, and what an approved account unlocks.
BMW & MINI Key Fob Replacement: CAS, FEM, BDC by Chassis
BMW and MINI key fob replacement by immobilizer: CAS1, CAS3, CAS4, FEM / BDC and G-chassis BDC2 / BDC3, with FCC IDs, chips, frequencies and stock.
Nissan & Infiniti Key Fob Replacement: FCC IDs, Boards & Chips
Nissan and Infiniti key fob replacement by generation: which chip, which FCC ID and which S180144 board, plus programming routes and stocked parts.
Ford M3N-A2C and N5F-A08TBLP Fobs: Years, Buttons, Frequencies
Ford M3N-A2C31243300, M3N-A2C93142300, N5F-A08TBLP, N5F-A08TAA and related fobs: years, buttons, frequency, chip and part numbers for locksmiths.
Acura Key Fob Replacement: FCC IDs, 72147 Part Numbers & Programming
Which Acura fob fits by FCC ID and 72147 suffix, what Driver 1 and Driver 2 mean, and how each generation programs by OBD.
Remote Head, Flip or Smart Key: Which Does the Customer Need?
Twist ignition means a remote head, flip or transponder key; push-button means a smart key. What can be upgraded, what cannot, and a decision table.
Buying Car Keys Wholesale in Canada: Dispatch, Freight and Customs
How a Canadian wholesale car key order works at Car Key Source: Ontario dispatch, CAD pricing, transit, free freight, returns and why customs never applies.
VW & Audi Key Fob Replacement: ID48, MQB & Smart Keys
Volkswagen and Audi key fob replacement by immobilizer generation: ID48 flip keys, MQB Megamos AES, Audi IYZFBSB802 smart keys, HU66 and Xhorse remotes.
Locksmith Supply in BC and Alberta: Car Keys Shipped Domestically
BC and Alberta locksmiths buy car keys wholesale from Ontario stock in CAD, no customs. Standard transit sits toward the long end of 4–8 days; expedited 1–2.
Lexus Key Fob Replacement: FCC IDs, Board Numbers & Programming
How to match a Lexus smart key by FCC ID and board number, which chip generation it is, and how 4D and 8A vehicles program.
Aftermarket vs Genuine OEM Car Keys: When Each Is the Right Call
Aftermarket and genuine OEM car keys explained for locksmiths: what each grade means, when each is the right call, used-key lock-in and honest wording.
Ford Key Fob Replacement: FCC IDs, Generations & Programming
Ford, Lincoln and Mercury key fob replacement by generation: 4D63, ID46 and ID49 chips, FCC IDs by year and model, and programming routes.
315 vs 433 vs 902 MHz Key Fobs: How to Tell and Why It Matters
315, 433.92, 868/902 and Toyota 312/314 MHz key fob bands explained, how to identify the band, and why a wrong-frequency fob programs but never works.
Subaru Key Fob Replacement: FCC IDs, Chips & Programming
Identify a Subaru key by generation, match FCC ID, chip and frequency, and see which aftermarket fobs and Lonsdor LT20 boards Car Key Source stocks.
Where Locksmiths Buy Key Fobs in the US (2026): Distributors Compared
US wholesale key fob distributors compared for locksmiths on pricing access, catalogue breadth, freight threshold and dispatch cutoff, using only public facts.
Key Fob Shell or Full Remote? When a Case Swap Is Enough
When a key fob shell swap fixes the problem, when only a complete remote will, how to move the transponder chip safely, and how to cut the blade.
Mazda Key Fob Replacement: FCC IDs, Part Numbers & Programming
Which Mazda fob fits, by FCC ID and 67-5DY part number, which chip it carries, and how it programs — a working guide for locksmiths.
GM OUC60270, OHT01060512, HYQ1EA: Which GM Remote Is Which
GM key fob FCC IDs sorted by vehicle and year: OUC60270, OHT01060512, M3N32337100, HYQ1AA, HYQ1EA, HYQ4EA and HUFGM2718, with buttons, frequency and PNs.
Autel IKEY Universal Smart Keys: Which Vehicles, Which Tool
Autel IKEYHD4TP, IKEYHD5TPR, IKEYAT004CL and IKEYAT005BL explained, the MaxiIM KM100 that generates them, and when to choose an IKEY over a vehicle-specific fob.
Where Locksmiths Buy Key Fobs in Canada (2026): Suppliers Compared
Canadian wholesale key fob suppliers compared on domestic stock, trade-gated pricing, currency, freight threshold and guarantees, using only public facts.
Automotive Locksmith Supply in Quebec: Car Keys Shipped Domestically
Quebec locksmiths buy car keys and fobs wholesale, shipped domestically from Ontario stock in CAD, no customs. Dispatch by 4 PM ET, 4–8 business day transit.
Which Original Lishi Tool for Which Make: HU100, TOY43, HO01, HU92
HU198, HU100, B111, GM39, TOY43, TOY43AT, TOY43R, TOY48, HO01, NSN11, NSN14, HU92, HU66, MAZ24R and VA2T matched to makes, with what each reads.
KEYDIY ZB, NB & B Series Remotes: What Each Series Does
KEYDIY ZB smart keys, NB flip keys with chip, B remote-only blanks, the KD-MAX generator, KD-X2 cloning chips and every blade pack in stock, with links.
Toyota HYQ14 Smart Keys: FBA, FBX, ACX, AAB, ADR — Boards Explained
Toyota and Lexus HYQ14 smart keys by generation: AAB, AEM, ACX, ADR, FBA, FBC, FLA, FBX, FBN, FBW with boards, chips, years and matching Lonsdor LT20 boards.
Key Blanks and Keyways by Make: HU101, B111, TOY43, HON66, NSN14, HU92
Keyways by make for locksmiths: Ford HU101/HU198, GM B111/HU100, Toyota TOY43/TOY48, Honda HON66, Nissan NSN14, Hyundai HY15, Mazda MZ34, BMW HU92, VW HU66.
Automotive Locksmith Supply in Ontario: Car Keys From Ontario Stock
Ontario locksmiths buy car keys and fobs wholesale from Ontario stock in CAD, no customs. Same-day dispatch by 4 PM ET, standard transit 4–8 business days.
Key Programming Tools Locksmiths Use in 2026: Autel, Xhorse, Lonsdor
Autel IM508/IM608/KM100, Xhorse Key Tool Max Pro/Plus/Mini, Lonsdor K518/KW100, KEYDIY KD-X2/KD-MAX, SmartPro and AutoProPAD compared by what each does.
Lonsdor LT20, FO30, HD30 & NS30 Boards: Which One for Which Job
Which Lonsdor LT20 board fits which Toyota, Lexus or Subaru, what the KW100 does, FO30 vs FO3H frequency variants, and every Lonsdor universal key in stock.
Honda 72147 Part Numbers: Reading the Suffix (TGV, TK8, T43, TJB)
How to read Honda and Acura 72147 smart key part numbers: what TGV, TK8, T43, TJB and the other model codes mean, with a PN to FCC ID lookup.
How Smart Keys Are Programmed: Add-a-Key vs All Keys Lost
How proximity keys pair with the car, why add-a-key and all-keys-lost differ, why used Toyota fobs will not register, and which tools do the job.
Can't Find the Key? How a Trade-Desk Sourcing Request Works
A zero-result search on carkeysource.com is a sourcing request. Send year, make, model, FCC ID or part number, a photo and your tool, and the desk quotes.
Transponder Chip IDs Explained: 4C, 4D, 8A, ID46, ID47, ID49, ID4A
Transponder chip families explained for locksmiths: 4C, 4D, 8A, ID46, ID47, ID49, ID4A, ID48 and Megamos 13, with clone-vs-program rules.
The FCC IDs Locksmiths Look Up Most (and What They Fit)
The 13 most-searched key fob FCC IDs on Car Key Source, with the vehicles, buttons, frequency, chip and part numbers each one fits.
Xhorse Universal Remotes: XM38, XS/XK/XN/XE Codes & Super Chips
XS, XK, XN and XE prefixes decoded, what XM38 smart-key generation needs, XT27A vs XT57B, and a per-style table of every Xhorse remote in stock.
Subaru Key Fob Battery Replacement: Every Fob Generation, Step by Step
A generation-by-generation guide to replacing a dead Subaru key fob battery, including battery types, opening techniques, and what to do if the fob still won't work.
Hyundai & Kia Key Fob Battery Replacement: Every Fob Generation, Step by Step
A locksmith's guide to replacing the battery in every Hyundai and Kia key fob type, with battery sizes and shell-opening steps.
Ford Key Fob Battery Replacement: F-150, Explorer, Escape & More
A locksmith's guide to Ford key fob batteries: CR2032 vs CR2450 by fob type, safe opening steps, and when it's not the battery.
Autel Key Programmers for Locksmiths: MaxiIM, IM508 & KM100 Compared
A locksmith's buyer's guide to the Autel MaxiIM lineup — IM508, IM608 and KM100 — covering what each tool programs and its real limits.
OBD2 Scanners That Program Key Fobs: What Actually Works
What OBD2-based programmers can and can't do for key fobs, the tool categories locksmiths actually use, and what matters more than the scanner.
Honda & Acura Key Fob Replacement: Types, FCC IDs, and Programming
Honda and Acura fob replacement explained: remote head keys vs smart keys, the FCC IDs to know, programming routes, and typical costs.
How to Change the Battery in a Toyota Key Fob
Toyota smart keys take a CR2032, remote head keys usually a CR2016. How to open each fob type, swap the cell, and drive with a dead fob.
How to Change the Battery in a Honda Key Fob
Every Honda and Acura fob generation takes a CR2032. Here is how to open each shell without cracking it, and what to check if that does not fix it.
Toyota Key Fob Replacement: A Locksmith's Sourcing & Programming Guide
Which Toyota fob fits, how it programs, and what it should cost — a working guide to G-chip, H-chip and smart proximity keys by FCC ID.
How to Change the Battery in a Nissan Key Fob
Change your Nissan key fob battery the right way: exact battery type and opening steps for every Intelligent Key and remote generation.
Key Fob Programming: A Guide for Common Makes
Step-by-step key fob programming instructions for Ford, GM, and Chrysler proximity systems. A trade guide for locksmiths, with the right keys to stock first.
Car Key Types Explained: Smart Keys, Flip Keys, Remote Head & Transponder
From plain metal blades to proximity fobs: the seven car key types, how to identify each one, and what replacement and programming involve.
How Much Does Key Fob Programming Cost? (2026 Pricing Guide)
Typical 2026 key fob programming costs, from $50 remote pairing to $600+ all-keys-lost — and why a locksmith usually beats the dealer.
Reading Key Blank Cross-References (Ilco, JMA, Silca)
Every key blank goes by several names. How to read Ilco, JMA and Silca cross-references, decode blank codes and avoid wrong orders.
How to Program a Key Fob: Onboard vs Tool Programming
Remote pairing and transponder programming are different jobs. Here's how each works, which cars support DIY onboard programming, and when you need a tool.
Where to Find the FCC ID on a Key Fob (and Why It Guarantees Fit)
The FCC ID printed on every key fob identifies its exact radio. Where to find it, how to read a worn label, and how to order with it.
How to Change a Key Fob Battery — Every Major Brand
Step-by-step key fob battery replacement for every major brand: which coin cell you need, where to pry, and what to do when a new battery doesn't help.
Transponder Keys Explained: Chips, Cloning & Programming
What a transponder key is, how the immobilizer handshake works, the major chip families by make, and when to clone versus program a key.
Choosing a Key Programmer: Autel vs Xhorse vs OBDSTAR (2026)
Autel, Xhorse and OBDSTAR compared for working locksmiths: real coverage strengths, token costs, and which key programmer to buy first.
Original Lishi 2-in-1 Tools: Pick, Decode and Cut Faster
What a Lishi 2-in-1 does, how to pick and decode with one, the automotive keyways to own first, and how to keep the tool in calibration.
Which Key Fobs Are Worth Stocking on the Van
A coverage-tier framework for van stock: which fobs earn shelf space, where universal remotes fit, and how to source the long tail fast.
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