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.
Checking Bus Activity
Special tools and workshop equipment required
- Vehicle Diagnostic Tester
Via this test, there is the possibility to trace whether to replace individual partial busses (powertrain, comfort and infotainment) during bus rest period (Sleep Mode).
-- Connect the Vehicle Diagnostic Tester. Refer to Description and Operation .
-- On the Vehicle Diagnostic Tester, select "Guided Fault Finding".
-- Using the "Go To" button, select "Functions/Component selection" and the following menu options in sequence:
- Body
- Electrical Equipment
- 01 - On Board Diagnostic (OBD) capable systems
- Data Bus On Board Diagnostic Interface
- Functions of Data Bus On Board Diagnostic Interface
- Checking bus activity
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.