Professional-grade programmable smart key engineered for Toyota and Lexus mid-to-late models (2012-2022)!
The Lonsdor LT20-04 04NJ is a flagship member of the LT20 series, featuring seamless 8A↔4D chip conversion, multi-frequency adjustability, and full compatibility with Lonsdor K518ISE/K518S/K518 Pro/KH100+ programmers.
Why Choose Lonsdor LT20-04 04NJ for Toyota & Lexus?
✅ Extensive Coverage for 2012-2022 Toyota Flagship Models
Precision-calibrated for the most popular Toyota models with high market retention (minor Lexus compatibility), covering SUVs, sedans, compact cars and light trucks—no need to stock multiple keys for different Toyota variants:
- SUV/Off-Road: Prado (13-21), Land Cruiser (13), Highlander (13/15-21), RAV4 (13-18), Fortuner (16-)
- Sedans: Camry (12-16), Crown (12-19), Reiz (12-14), Corolla (14-18), Levin (16-18)
-
Compact/Other: Yaris L (15-22), Vios/Vios FS (16-), Innova (16), Hilux (15-20)
Ideal for locksmiths servicing Toyota’s 2012-2022 lineup—the most in-demand mid-to-late models on the market.
✅ 8A+4D Dual Chip Conversion & Multi-Board Compatibility
The LT20-04’s biggest advantage! Natively supports 8A and 4D chips with one-click mutual conversion via Lonsdor programmers, covering two mainstream Toyota immobilizer systems in a single key. It’s also compatible with 7 factory board numbers: 2110, 0020, 0010, 0101, 7930, 0182, 0011—perfectly matching different production batches of Toyota vehicles and directly replacing the old Lonsdor 8A universal key board (P0020B) with enhanced stability and functionality.
✅ Board numbers
8A : 0010, 0040, 0182, 0410, 2110, 3330, 3950, 0011, 0101, 0350, 0440, 2150, 3410, F43口, 0020, 0120,0351, 2020, 2230, 3450, 6100, 0250, 3041, P7000
4D : 0031, 0140, F433, S0751, 3370, S5290, 5380, 6221, S7210, 7990, 0091, 0310, 0500, 0780, 4610, 5300,5691, 6230, 7930, 0111, A433, 0751, S0780, 5290, 5360, S5801, 6601, 7980
✅ Multi-Frequency Adjustable & FSK Modulation
Equipped with switchable multi-band frequencies (312.09/314.35/315.10/433.58/434.42MHz and more) and stable FSK modulation—easily modify the frequency via Lonsdor programmers to fit regional signal specifications and avoid interference. Delivers long-range, anti-interference remote signal performance, mirroring the original Toyota key’s responsiveness for keyless entry and remote control.
✅ 10 Versatile Programmable Functions (Exclusive Per Programmer)
Unlock full customization and professional functionality with 10 programmable features, tailored for Lonsdor’s K518 series (shop use) and KH100+ (on-site mobile service) with exclusive perks for each:
- Get key version/hardware information
- Read/convert original 4-button functions (Lock/Unlock/Trunk/Panic)
- Unlock key for initial programming & firmware upgrade
- Modify remote frequency and modulation mode
- Convert smart key chip type (8A ↔ 4D)
- Modify the remote count value for seamless vehicle sync
- Copy 8A smart key data (KH100+ exclusive – fast on-site duplication)
- Generate emergency key (K518 series exclusive – backup for dead batteries)
- All-keys-lost matching (K518 series exclusive – no disassembly required)
- Replace old 8A universal key board data (P0020B)
✅ Seamless Compatibility with Lonsdor Flagship Programmers
Designed for plug-and-play use with Lonsdor’s industry-leading key programming tools—the gold standard for Toyota key work, with a dedicated LT Smart Key menu for one-click operation:
- Tablet Programmers: K518ISE / K518S / K518 Pro (comprehensive functions, ideal for shop use, supports all-keys-lost matching)
-
Handheld Programmers: KH100+ (ultra-portable, perfect for on-site mobile service, fast 8A key copy)
No extra software, no activation fees—follow the on-screen prompts and finish programming in minutes, even for beginner locksmiths. Fully compatible with all standard Toyota smart key shells for easy assembly.
✅ Genuine Lonsdor Quality & Stable Performance
Crafted with Lonsdor’s industrial-grade components, this smart key delivers consistent, long-lasting performance far superior to generic aftermarket keys. Weighing just 100g (0.22LB), it’s compact and lightweight, fitting all standard Toyota smart key housings with no modification needed. Backed by Lonsdor’s professional R&D, it ensures zero pairing errors, anti-interference signal transmission, and durability for daily professional use—trusted by locksmiths worldwide.
Lonsdor LT20-04 04NJ Core Product Specifications
| Feature | Detailed Information |
|---|---|
| Brand | Genuine Lonsdor |
| SKU | SA2141-04 |
| Model | LT20-04 04NJ |
| Fitment | Toyota 2012-2022 (mainstream models), minor Lexus compatibility |
| Chip Support | 8A + 4D (one-click mutual conversion) |
| Compatible Board Numbers | 2110, 0020, 0010, 0101, 7930, 0182, 0011 |
| Frequency | 312.09/314.35/315.10/433.58/434.42MHz (adjustable) |
| Modulation | FSK |
| Buttons | 4-Button OEM Layout (Lock/Unlock/Trunk/Panic) |
| Weight | 100g (0.22LB) |
| Compatible Programmers | K518ISE/K518S/K518 Pro/KH100+ |
| Replacement For | Lonsdor 8A universal key board (P0020B) |
| Key Function | Spare key creation, key replacement, all-keys-lost matching (K518 only) |
| Condition | Brand New, In Stock |
What’s Included in Your Order
✅ 1× Genuine Lonsdor LT20-04 04NJ 8A+4D Smart Key (circuit board core)
Note: Toyota key shell, key blade, CR2032 battery, and programming tools are sold separately—compatible with all standard Toyota smart key housings.
Simple Programming & Assembly Steps
Step 1: Program the Key (with Lonsdor K518/KH100+)
- Power on your Lonsdor programmer and navigate to Special Functions > LT Smart Key (K518) / Special Functions > LT Smart Key (KH100+).
- Select Get Version Info to confirm the key’s parameters, then choose Convert Smart Key Type to switch 8A/4D chip (no internet required).
- Modify the frequency to match the target Toyota model, then follow on-screen prompts to write IMMO data (supports all-keys-lost with K518).
Step 2: Assemble the Key
- Insert the programmed LT20-04 key core into a standard Toyota smart key shell.
- Install a CR2032 battery and attach a compatible Toyota key blade (sold separately).
- Test the remote signal and keyless entry function—your key is ready for use!
Key Function Differences: Lonsdor K518 Series vs. KH100+
Both programmers work flawlessly with the LT20-04, with exclusive features to optimize your locksmith service workflow:
| Function | Lonsdor K518ISE/K518S/K518 Pro | Lonsdor KH100+ |
|---|---|---|
| Version Info / Button Read/Convert / Frequency Modification | ✅ | ✅ |
| 8A/4D Chip Conversion / Firmware Upgrade / Remote Count Modify | ✅ | ✅ |
| Unlock Key / Replace P0020B Board Data | ✅ | ✅ |
| Copy 8A Smart Key Data | ❌ | ✅ |
| Generate Emergency Key | ✅ | ❌ |
| Toyota All-Keys-Lost Matching | ✅ | ❌ |
Who This Lonsdor LT20-04 04NJ Key Is For
This Lonsdor LT20-04 04NJ is a must-have professional tool for automotive locksmiths, mobile key service technicians, and auto repair shops that service Toyota’s 2012-2022 mid-to-late models. It’s the perfect solution for:
- Replacing lost/damaged Toyota smart keys for 2012-2022 models
- Creating spare keys for Toyota’s most popular SUVs, sedans and compact cars
- On-site mobile key service (compact, lightweight, easy programming)
- All keys lost Toyota matching (no vehicle disassembly with K518 series)
- Streamlining inventory (one key covers 8A/4D chips and 7 board numbers)
- Upgrading from old Lonsdor 8A universal key boards (P0020B) to enhanced LT20 functionality
Important Notes
- Key Core Only: No key shell, blade, or battery included—compatible with all standard Toyota smart key housings.
- Professional Programming Required: Must be used with Lonsdor K518/KH100+ series programmers (not included) — cannot be used as a standalone key.
- Primary Toyota Fitment: Designed for Toyota 2012-2022 mainstream models (minor Lexus compatibility, confirm vehicle specs first).
- All-Keys-Lost Capability: Only supported with Lonsdor K518ISE/K518S/K518 Pro programmers (no KH100+ support).
- Direct P0020B Replacement: Upgrades the old 8A universal board with better stability and more functions—seamless for existing Lonsdor users.
