BMW X3 Service & Repair Manual: E65 and e66 procedure to reset the cbs display using bmw diagnostic tester

Using the BMW diagnostic tester, the CBS Reset sets the selected service item to 100% (full service interval) and displays a service counter indicating how many times the service item has been reset.

The CBS reset procedure is found under: Diagnosis - Function Selection - Service Functions - Maintenance - CBS Reset - Test Plan. Then highlight the listed procedure and press the bottom right corner green arrow to the right. The original value of the individual CBS service item will be deleted during the reset procedure.

The first vital step of the reset procedure is to verify the DISplus or GT1 correct date and time: "Are the current date and time correct?" This is important for time and distance-based service items that are managed by the Instrument Cluster, because the internal vehicle trip odometer and vehicle data will be synchronized with the internal Tester data. Confirm by either pressing Yes or No (if required, correct date and time in Main Menu - Administration - DIS - Date/Time ). Then select the bottom right corner green arrow to the right.

The next screen offers 3 selection menus:

SELECTION MENUS

To properly complete the CBS reset, the date and time of service/maintenance will be transferred to the vehicle.

This includes setting the day counter and the date. The transfer completion is confirmed by: OKAY in the setting status.

The CBS vehicle data correction allows "quick access" to correct or change the basic data stored in the vehicle after the CBS reset. This procedure is found under: Diagnosis - Function Selection - Service Functions - Maintenance - CBS Correction, Vehicle Data - Test Plan. Then highlight the listed procedure and press the bottom right corner green arrow to the right. Please verify the correct date and time of the DISplus or GT1 before proceeding.

The next screen offers 4 selection menus:

SELECTION MENUS

NOTE: CBS reset and correction may be required if a control module has been replaced or reprogrammed.