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.
Vehicle Identification
Vehicle ID is carried out on the basis of control module data (EWS and IKE/Cluster ZCS)
For automatic ID, the DIS or MoDiC reads the ZCS code to determine what systems are installed in the vehicle and directly seeks them out. This process is much faster than previous method of polling all systems possible for a specific vehicle series.
If the D bus is faulted or the tester can not communicate for whatever reason, Manual ID is required.
When either manual or automatic vehicle identification has been completed, the Vehicle System" screen appears.
First carry out the short test to interrogate the fault memories of all control systems.
The system contacts the control modules directly to check if the control module is installed and capable of communication.
The status of the control module is then displayed in the Vehicle ID screen.
Another option is to check control modules for individual interrogation by pressing the systems individually from the screen.
Correct vehicle identification is the first essential step for both system guided and user guided troubleshooting.
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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.