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.
Key Programming Using Two Programmed Keys
2005 Jaguar XJ8 BaseSECTION Key Programming Using Two Programmed Keys
- To program additional PATS keys, a minimum of two valid keys must be available(if only one key is available, it will be erased and reprogrammed with the new key).
- Key programming using two programmed keys.
- Insert the first valid key and turn to the run position for a maximum of five seconds, then turn to off and remove the key.
- Within ten seconds of removing the first key, insert the second valid key and turn to the run position for a maximum of five seconds, then turn to off and remove the key.
- To program the third (additional) key, insert the key and turn to the run position within twenty seconds of removing the second key, allow the PATS LED to prove out for three seconds to confirm storage of the additional key, then turn to off and remove the key.
- This method can be used to store up to a maximum of 8 ignition keys.
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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.