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.
General Warnings and Safety Regulations: Diagnosis
If the "Airbag system" indicator light is active, the fault in the airbag system must first be remedied before starting diagnosis and repair on other systems.
A pyrotechnic unit that has been diagnosed as defective must not be deployed locally but must be returned. Refer to Safety Regulations for Restraint Systems for restraint systems.
Do not suspend the scan tool from the steering wheel by the bracket. Follow the special instructions in the Safety Regulations for Restraint Systems for restraint systems. Vehicles with a diagnostic trouble code (DTC) set in the airbag system ("Airbag System" indicator light on) must not be handed over to customers - danger to occupants!
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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.