Condition

Customer states:

OR

Workshop findings:

High-voltage battery charging unit (diagnostic address 00C6) has one of the following part numbers:

Technical Background

Software issue

Production Solution

Not applicable.

Service

This TSB replaces Pending Service Solution (PSS) TSB 2074126:27 PSS MLB PHEV/BEV: 12V battery discharged by bus wake-up. For MY24 Q8 e-tron.

The software for the high-voltage battery charging unit (00C6) must be updated on this vehicle. Explain to the customer that various control units must be reconfigured after the software update to ensure that they function correctly in conjunction with other control units in the vehicle. Components which have been retrofitted in the vehicle but have not been entered in the vehicle equipment list via feedback documentation (version compare) to the SVM may not function correctly after the configuration process. Ask the customer whether they have had non-genuine components retrofitted on the vehicle or modifications carried out by third parties (e.g. tuning) or are aware of any such retrofits or modifications. Inform the customer that, if non-genuine retrofits or modifications have been carried out on the vehicle by third parties, neither AUDI AG nor your own company will accept liability for any damage that may be caused by updating the software, or by failing to do so. Please refer the customer to the Warranty and Maintenance booklet to learn more about how chip tuning can impact warranty coverage.  Make a note to this effect on the order before it is signed by the customer. Include this information in the customer file.

 

Note:

Try to reproduce the customer complaint (based on the description/cause of the issue), so that it can be clearly assigned to this TPI. The following repair must only be carried out if all the criteria (model/type, chassis number, engine/motor and gearbox code, PR number(s), part number, software version, code etc.) apply exactly. Otherwise, this solution will not eliminate the problem and repeat repairs may be necessary. In such a case, we may reject the warranty claim and charge back the cost of the parts.

Follow all instructions in TSB 2011732:00 Software Version Management (SVM), operating instructions.

Please flash the control unit for high-voltage battery charging unit (00C6) using the SVM code.

To enter the SVM code, use “Flash” mode on the ODIS tester.

NOTE:ThisMustbe done in 2 stages:

For stage 1:the SVM code required isC6A015.

Follow the instructions on the tester.

Now perform a terminal 15 reset for 2 minutes.

For stage 2:the SVM code required isC6B015.

Follow the instructions on the tester.

 

Note: If event memory entry P31E200 is logged as static in diagnostic address 00C6, proceed as follows:

Charge the vehicle using AC power for 2 minutes. The event memory entry is then logged as intermittent and must be erased.

We recommend that you ALWAYS use a USB cable to connect the ODIS tester to the diagnostic connection for flashing procedures.

If available, we recommend using VAS3154 or VAS 6154A to update control units, as these units are very well protected against electrostatic discharge.

Warranty

All warranty claims submitted for payment must be in accordance with theAudi Warranty Policies and Procedures Manual. Claims are subject to review or audit by Audi Warranty.

Additional Information

All part and service references provided in this TSB (2077527) are subject to change and/or removal. Always check with your Parts Department and/or ETKA for the latest information and parts bulletins. Please check the Repair Manual for fasteners, bolts, nuts, and screws that require replacement during the repair.

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