Service/Diagnosis Information Sources

Service/Diagnosis Information Sources

Service Bulletins

Service Information Bulletins are the first place to refer to when preparing to diagnose a transmission system malfunction. Service Information bulletins address known malfunction issues and minimize invested diagnostic time when used.

Customer complaint: Vehicle makes noise when shifting.
Vehicle: 1994 740i (E32)
- Verify customer complaint,
- Gather service related information prior to diagnosis.
- Once in TIS, properly identify vehicle.
- Select path to see if customer complaint actually matches up with a known problem.
- Use the menu to selection path that best fits the condition of malfunction.
- Review your selections taking a second look to make sure they are appropriate.
- The system will narrow the search down providing pertinent information specific to the entered parameters.
- In this scenario first select the "New Transmission Oil Filter for A55 560Z". This bulletin addresses a condition similar to the customer complaint.
- Additionally, the bulletin includes information for Correction, Procedure, Parts Information and Warranty Information.

Transmission Control System Programming is often the source of a perceived customer complaint. Refer to the EPROM laminated reference card for possible linked SI bulletins. Always review current paper SI Bulletins as well as the monthly Service Round Table announcement bulletin which includes a master index of previous Service Round Table Broadcast Subjects with linked SI bulletins.