Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Transponder Key: Description
The Sentry Key Immobilizer System (SKIS) has a transponder chip included on the circuit board beneath the cover of each FOB with Integrated Key (FOBIK) (1) included with the vehicle. The FOBIK includes an integral mechanical valet key which is stored within the bottom of the FOBIK housing until it is released using the latch button (2). The valet key is cut to match the mechanical coding of the door and glove box lock cylinders. Each new replacement FOBIK must be programmed for operation of the Remote Keyless Entry (RKE) system and has a unique transponder identification code that is permanently programmed into it by the manufacturer. This identification code must be programmed into the Wireless Ignition Node (WIN) (also known as the Sentry Key Immobilizer Module/SKIM, the Sentry Key REmote Entry Module/SKREEM or the Wireless Control Module/WCM) to be recognized by the SKIS as a valid key.
The FOBIK transponder cannot be adjusted or repaired. If ineffective or damaged, the entire FOBIK and RKE transmitter unit must be replaced.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
No obligation. See pricing before you book.