Mechanic Wiki: All Keys Lost Ram 1500 (2009–2018)

Step-by-step guide to program new keys for a 2009–2018 Ram 1500 using LAUNCH X431. Covers PIN code, SKIM bypass, and troubleshooting. No original key needed.

Published / Last Updated: June 16, 2026

Quick Answer

If you have lost all keys for a 2009–2018 Ram 1500, the LAUNCH X431 scanner can bypass the SKIM module and program a new key without needing a working original. You must have a valid PIN code (VIN-dependent). The process involves connecting to the vehicle, selecting "All Keys Lost" under the Immobilizer menu, entering the PIN, and programming two valid transponder keys. The truck will not start until at least one key is programmed to the module.

Understanding the Problem

What is the "All Keys Lost" Situation?

Losing every key to a Ram 1500 is more than an inconvenience — it’s a full-blown immobilizer lockout. The Sentry Key Immobilizer Module (SKIM) reads the transponder chip inside your factory key. When it detects no valid chip, it cuts fuel and starter signals. The engine cranks but never fires. You’re stranded until a new key is learned by the module.

The catch? The SKIM won’t simply accept any key. It requires a secure authentication process that traditionally demanded a dealer-level scan tool or an expensive locksmith visit. That’s where the LAUNCH X431 changes the game.

Why the LAUNCH X431 is Ideal

The LAUNCH X431 series (V+, Pro, PAD VII, and newer) offers bidirectional communication with Fiat Chrysler Automobiles (FCA) vehicles — Dodge, Ram, Jeep, Chrysler. It has direct access to the "All Keys Lost" subroutine, which means you don’t need older bypass tools or backdoor methods. The scanner talks directly to the SKIM module over the CAN bus using a specialized adapter cable (12+8 pin or DB15, depending on the X431 model). This makes the LAUNCH X431 one of the most accessible tools for independent shops and mobile technicians tackling Ram 1500 key programming.

Prerequisites and Safety Notes

Before you dive in, gather everything you need. Skipping any of these items is the fastest way to a failed programming session — and a very frustrated customer.

Tools and Items You Need

LAUNCH X431 scanner with IMMO support (most models include this). Ensure the software is up to date.
Two blank transponder keys – 4D60 or 4D67 chip type, cut to match the ignition. OEM blanks are best, but quality aftermarket blanks from reputable brands work reliably.
12V battery charger – this is non-negotiable. A weak battery causes most programming failures.
8-digit PIN code – obtained from the dealer, a locksmith service, or a VIN-based PIN lookup provider. This code is unique to the vehicle’s VIN.

Important Precautions

Do not disconnect the scanner or turn off the ignition during the procedure. A power interruption may corrupt the SKIM memory.
Battery voltage must be above 12.5 volts. Connect the charger before you begin, even if the battery seems healthy.
PIN attempts are limited. The SKIM module typically locks out after three incorrect PIN entries, requiring a dealer reset. Double-check the PIN before entering it.

Step-by-Step All Keys Lost Procedure

Step 1: Connect the LAUNCH X431 to the Vehicle

Locate the OBD-II port under the driver-side dashboard. On Ram 1500s (2009–2018), it’s usually near the hood release.
Use the correct adapter cable. For most LAUNCH X431 models, the 12+8 pin cable is required to access the SKIM module directly. Some newer X431 units use a DB15 cable — refer to your scanner’s manual.
Power on the scanner and wait for the main menu to load.

Step 2: Select the Correct Vehicle Profile

From the main menu, tap Diagnosis > American > Dodge or Ram > Ram 1500.
Select the exact model year (2009–2018). If the year range is split, choose the closest match.
Choose Engine or Gasoline as appropriate. Diesel models (Cummins) use a slightly different immobilizer procedure, but the X431 still supports them.

Step 3: Enter the Immobilizer Function

After the VIN is read, go to System Selection and choose Immobilizer System (SKIM).
Wait for the scanner to establish communication with the module. This may take 10–20 seconds.
Once connected, select Special Function or Maintenance (the exact wording depends on your X431 software version).

Step 4: Choose "All Keys Lost"

Look for All Keys Lost or Program Ignition Keys in the submenu.
The scanner will prompt you to enter the 8-digit PIN. Type it carefully. The PIN is usually printed on a card from the dealer or provided by your locksmith service.
Troubleshooting: If the PIN is rejected, double-check the VIN on the vehicle (on the driver-side dash tag or door sticker) and confirm it matches the PIN source. Do not attempt more than two retries — you risk a lockout.

Step 5: Program the First Key

Insert the first new blank key into the ignition. Turn it to the ON position (the dash lights come on, but do not start the engine).
The scanner will display "Programming..." . Leave the key in the ON position. Do not touch anything.
Wait for the confirmation message: "Key 1 Learned" or similar. This typically takes 30–60 seconds.
Remove the key.

Step 6: Program a Second Key (Mandatory)

Insert the second blank key into the ignition. Turn to the ON position.
The scanner will automatically detect the new key and program it. Wait for "Key 2 Learned" .
Warning: You must program at least two keys. If you stop after one, the system may revert to "learning" mode and refuse to start. Programming two keys also allows you to add additional keys later using a working key.

Step 7: Final Verification

Turn the ignition off and disconnect the scanner.
Insert the first programmed key and turn to the ON position. The dashboard anti-theft light (a key icon or a red security light) should illuminate briefly and then turn off after about 2 seconds.
Start the engine. It should fire up normally.
Repeat with the second key to confirm it works.

Common Issues and Troubleshooting

"Communication Error" with SKIM Module

Check the adapter cable. The 12+8 pin cable must be fully seated. A loose connection is the most common cause.
Ensure the ignition is ON (not just accessory mode).
Hard reset: Disconnect the negative battery terminal for 10 minutes, then reconnect. This resets the BCM and SKIM modules. Retry the procedure.

"Invalid PIN" Error

Confirm the PIN came from a dealer or a reputable VIN lookup service. Free online PIN calculators are often wrong.
If the Ram 1500 has a used or salvage SKIM module, the PIN may not match the vehicle’s VIN. In that case, you need the original PIN from the donor vehicle.
Avoid repeated attempts. After three failures, the module locks out for a set period (sometimes hours). A dealer scan tool may be needed to unlock it.

Key Programming Fails Mid-Way

Low battery is the #1 cause. Connect a battery charger and retry the full procedure from Step 1.
Poor-quality blank key. Use OEM or well-known aftermarket blanks (e.g., Ilco, Strattec). Cheap no-name blanks often have weak transponder responses.
Software region mismatch. If "American" region does not work, try switching to Europa or Asia in the LAUNCH X431 software. Some Ram 1500s built for export use a different protocol.

Deep Dive: Understanding the LAUNCH X431 IMMO Capabilities

Supported Vehicle Protocols for Ram 1500

The 2009–2018 Ram 1500 uses CAN-Bus (ISO 15765) for immobilizer communication. The LAUNCH X431 natively supports this protocol. For older Ram models (2003–2008), the protocol changes to ISO 9141-2 or PWM, which requires a different adapter and software — the X431 still covers those, but the All-Keys-Lost procedure is different.

The 12+8 Adapter Specifics

The 12+8 adapter cable is not just a physical extension. It provides direct access to the SKIM module’s dedicated CAN lines. Without it, the X431 may not detect the immobilizer system at all. If your X431 kit did not include this cable, you can purchase it separately from LAUNCH distributors. The part number varies by region, but any "12+8 OBDII adapter for Chrysler/Jeep/Dodge" will work.

Does It Work on 3rd Gen Rams (2006–2008)?

No. The procedure described here is specifically for the 4th generation Ram 1500 (2009–2018). The 3rd generation (2006–2008) uses a different SKIM module and requires a different PIN retrieval method. The LAUNCH X431 can still program keys on those older Rams, but you must select the correct year and follow a slightly different menu path.

Frequently Asked Questions (FAQ)

Can I program a key without the dealer PIN?

No, the LAUNCH X431 still requires the 8-digit PIN. Some locksmith services can retrieve it via the VIN at a lower cost than the dealership. You can also purchase PIN codes online from reputable automotive security providers.

Do I need a locksmith to cut the key?

Yes, the key must physically match the ignition tumbler. A blank transponder chip key cut by a locksmith is required. You cannot program a key that does not turn the ignition cylinder.

Will a single key work?

The module typically demands a minimum of two keys. If you program only one, the system may remain in "learning" mode and not allow engine start. Always program two keys.

Can I use a used key from another Ram?

No. Used keys are already paired to another module. You need a new, unprogrammed blank key. The transponder chip must be virgin (unprogrammed) for the SKIM to accept it.

What if I lose a programmed key later?

You can add new keys using the "Add Key" function in the same Immobilizer menu, as long as you have at least one working key. The X431 will guide you through the process.

Is this procedure safe for the ECU?

Yes, the procedure only affects the SKIM module memory. The ECU and BCM remain untouched. No risk of damaging other control modules.

About the Author: Erwin Salarda is an Automotive Service Equipment Technician based in the Philippines, specializing in computerized automotive diagnostic equipment such as OBD scanners and wheel alignment systems. Since 2012, he has been actively providing technical support, equipment installation, troubleshooting, after-sales service, and hands-on training for automotive service equipment used by workshops and automotive professionals.

He has received specialized training from international suppliers and manufacturers, including Launch X431 in Shenzhen, China, Lawrence Engineering Company in Guangzhou, China, and 3Excel Wheel Alignment Company in Shenzhen, China. Through these trainings, he developed advanced expertise in automotive diagnostics, calibration, wheel alignment systems, and computerized automotive service technologies.

Erwin Salarda provides professional after-sales support and technical training for automotive diagnostic and wheel alignment equipment, helping clients maximize the performance and proper use of their tools and systems. His experience covers equipment setup, software updates, calibration procedures, troubleshooting, and operational guidance for automotive workshops and service centers.

With more than a decade of experience in the automotive equipment industry, Erwin Salarda continues to support automotive businesses by delivering reliable technical expertise and practical training solutions.

For inquiries and equipment purchases, please visit https://carlifterph.com/

All Keys Lost Ram 1500 (2009–2018) – Program with LAUNCH X431