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.
Programming Ignition Keys Using Scan Tool
- Obtain vehicles unique 4-digit PIN from customer or manufacturer. Obtain ALL ignition keys (used and new) for vehicle. Ensure vehicle is in Park or Neutral. Connect scan tool to Data Link Connector (DLC) under driver's side of instrument panel, left of steering column.
- Turn ignition on. Using scan tool, select THEFT ALARM, SKIM then MISCELLANEOUS. Select PROGRAM IGNITION KEYS. Enter secured access code using 4-digit vehicle PIN.
- Using scan tool, select MISCELLANEOUS then ERASE ALL CURRENT IGN. KEYS. Program all ignition keys following scan tool instructions. A maximum of 8 keys can be programmed to vehicle.
If ignition key programming is unsuccessful, scan tool will display one of the following messages:
- PROGRAMMING NOT ATTEMPTED - Scan tool attempts to read programmed key status but no keys are programmed in SKIM memory.
- PROGRAMMING KEY FAILED - SKIM is unable to program ignition key because transponder in key is faulty or ignition key is programmed to another vehicle.
- 8 KEYS ALREADY LEARNED, PROGRAMMING NOT DONE - SKIM transponder is full.
- LEARNED KEY IN IGNITION - Ignition key currently inserted in ignition lock cylinder is already programmed to vehicle.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.
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