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.
Programmable Parameters
Programmable parameters are controlled features that can be modified while in service, typically by the customer. If a module that has been modified by programmable parameters needs replacement, Programmable Module Installation (PMI) procedure will maintain parameters in their altered state if Worldwide Diagnostic System (WDS) tester or New Generation Star (NGS) tester was able to communicate with old module during Vehicle Identification (VID) routine. If diagnostic tool tester was not able to communicate with old module during VID routine, programmable parameters may be used to return controlled features to their altered state.
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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.