Workshop Hints
Workshop Hints
Reset of the SIA III is possible:
- Using the Reset Tool as explained in SIA II Workshop Hints (up to MY 2001).
- Using the Reset Mode in the Instrument Cluster (E39/E53 MY 2001 onwards).
- Using the Reset Test Module in Service Functions
Reset procedure using the Reset Mode:
- Ignition key must be "off"
- Press and hold the trip odometer reset button in the instrument cluster (left button), and turn the ignition key to the first position.
- Keep the button pressed for approximately 5 seconds until one of the following words appear in the display: "OIL SERVICE", or "INSPECTION", with "Reset".
- Release the reset button and press it again until "reset" begins to flash in the display.
The service due, is shown with "reset", if the coded minimum consumption limit has been reached and resetting is possible. If "reset" is not shown, the minimum limit has not been reached and resetting is not possible.
- While "reset" is flashing, press the left button briefly to reset the service interval. After the display has shown the new interval, the following will appear: "END SIA"
The system can only be reset again after 10 liters (2.5gal) of fuel have been consumed.
Instrument Cluster Replacement
If the instrument cluster (IKE or Kombi) is replaced the SI data can be retrieved from the LCM on E38, E39, and E53 vehicles.
Replacement of the Kombi or IKE is only possible with a new component.
Leave the old cluster in the vehicle. Using the ZCS coding program, adopt the code from the old part.
Install the cluster and transfer the saved code to the new part. This procedure will ensure that the correct total miles and SIA data are transferred.
If the old part cannot be read, the LCM will provide a redundant location to allow the coding program to restore the total mileage and SIA data.
If the cluster is replaced in a vehicle equipped with a coding plug (E36/7 after 9/98) the procedure differs.
- Code the cluster using ZCS coding
The cluster will display the correct mileage and SIA data except that the "Manipulation" dot will be illuminated.
- Use test step 16 to copy data from the coding plug. Refer to SIB 62 10 98 for complete instructions.
Diagnosis
Diagnosis of the SIA System is carried out using the Diagnosis program from the DISplus or MoDiC III.
The tools available to diagnose the SIA system in the diagnosis program are:
Read SIA Data
The SIA data coded into a vehicle (Coded Inspection Limit) can be printed and attached to the repair order.
This is required in cases when the instrument cluster indicates that maintenance is required, but the vehicle has lower than expected mileage.
In a small number of cases it may be that the instrument cluster was coded with the incorrect Coded Inspection Limit and will have to be re-coded.
The display of SIA data on the DISplus or MoDiC III also shows "Stored Consumption". Stored Consumption (in gallons) is the amount of fuel consumed towards the "Coded Inspection Limit" (in gallons also). When the two numbers become equal, the instrument cluster indicates that service is required. When a reset is performed the Stored Consumption is reset to zero.
This feature is available in diagnosis for all vehicles using the SIA III method of calculating service intervals.
Refer to S.I 62 06 99 for a chart of Coded Inspection Limits for each vehicle model type.