Rewriting the ODO Data and Transferring the Service Reminder System Data to a New Gauge Control Module: Procedure

NOTICE:

When working with a vehicle equipped with the electronic air suspension, be sure to set it to the leveling off mode to prevent unexpected operation. Refer to the Electronic Air Suspension System Service Precautions - Refer to: Electronic Air Suspension System Connector Fitting Precautions or Electronic Air Suspension System Service Precautions for the procedure.

NOTE:

Obtain a new gauge control module before starting the rewriting process. Only new gauges can be rewritten.
Do not operate anything electrical (headlights, audio system, A/C, power window, door locks etc.) during the process.
Rewriting is not possible on a gauge control module that will not communicate with the HDS.
Confirm that you have the latest HDS version of software.
Make sure that the HDS shows the correct VIN for the vehicle you are working on.
Once you have started this procedure, you must complete it before removing the HDS from the data link connector (DLC).
Connect a 12 volt battery charger to insure that the battery voltage is maintained during the process.
If a maintenance minder is equipped, the maintenance minder data is also transferred.

Rewriting the ODO Data on a New Gauge Control Module - Procedure
Rewriting and Transferring

1. Before replacing the gauge control module, connect the HDS

2. Turn the vehicle to the ON mode.

3. Select the following menu buttons on the HDS screen in sequence.
- Body Electrical (System Selection Menu)
- Gauges
- Adjustment
- Gauge Control Module Replacement
4. Select "Read Out Data" and following the instructions on the HDS display and save value data into HDS.

5. Replace the gauge control module .

6. Select "Write Data" and following the instructions on the HDS display. If the data transfer fails, refer to the instructions below to release the locked value.

How to Release Locked Odometer Mileage to the Original Gauge Control Module.

If, after you attempt to transfer mileage to a new gauge control module, the odometer display has dashes (---), is garbled, or shows an incorrect value, the original gauge control module can be unlocked and restored to its original state and can be used again for additional attempts to transfer the mileage:

1. With the vehicle in the OFF (LOCK) mode, connect the original gauge control module.

2. Turn the vehicle to the ON mode.

3. Completely re-boot the HDS.

4. Clear any stored DTCs.

5. Select the following menu buttons on the HDS screen in sequence.
- Body Electrical (System Selection Menu)
- Gauges
- Adjustment
- Gauge Control Module Replacement
- Odo Lock Release
6. Follow the prompts and the odometer mileage will be restored.

7. Start over the Rewriting and Transferring procedure from step 1.