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.
Speech Control System
The voice control system enables voice operation of the telephone, telematics, Infotainment and navigation system.
Functions can be conveniently operated by voice commands. System is activated via the PTT button in the multi-function steering wheel.
From 11.03.2008, the voice control system is part of the information electronics control module 1 -J794-.
Fault finding is performed via "Guided Fault Finding" using the Vehicle Diagnostic Tester.
NO RELATED
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.