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.
Ignition key
There is a communication circuit in the ignition key, known as a transponder. This circuit is supplied with power from the magnetic field that is formed around the antenna ring when the central electronic module (CEM) activates the antenna ring. Consequently, the transponder is not dependent on a further power supply.
In order for the key to be used in the vehicle, a code in the key must be entered by the central electronic module (CEM). When the vehicle is delivered from the factory, two keys are normally programmed. When a key has been programmed for the central electronic module (CEM), the key is locked and cannot be programmed for another 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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