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Technical Service Bulletin

91 Cannot delete digital key

Transaction No.: 2078471/5
Release date: Dec 17, 2025

Condition
Model(s) Year(s) VIN Range Vehicle Specific Equipment
Ad, S5 (FU), Q5, Q5
Sportback, SQ5, and 2025 — 2026
SQ5 Sportback (GU)
AG Sportback e-tron, S6 All Not applicable
Sportback e-tron, Q6 e-
tron, Q6 Sportback e- 2025
tron, SQ6 e-tron, and
SQ6 Sportback e-tron
REVISION HISTORY
Revision | Date Purpose
5 - Revised header (Corrected models)
Revised Condition (Updated model table)
Revised Warranty (Updated labor operations)
4 12/12/2025 | Revised header (Added control modules)
Revised Warranty (Updated labor operations)
3 11/10/2025 | Revised Condition (Added model table)
Revised Service (Updated instructions)
Revised Warranty (Updated labor operations)
Customer states:

Unable to delete a digital key in the vehicle or on the smartphone. The digital key also does not work (cannot
unlock/lock or start vehicle) although the vehicle is online and has sufficient satellite reception and the ignition was
not turned on using the digital key.

Workshop findings:

The customer statement can be reproduced.

Technical Background

Software issue in onboard supply control unit.

Production Solution

Not applicable.

Service
Make sure the vehicle is online and has a valid time signal (sufficient satellite reception).

Ensure the ignition was not activated using a digital key.

If these conditions have been met and the digital key still cannot be deleted, reset the 12V battery using a Terminal
30 reset for at least 10 minutes. Then ensure the same conditions are met again.

Wait for at least 24 hours after performing the reset, as attempts to delete the key will be performed again during
this period. The vehicle should always be online during this period.

If the digital key still cannot be deleted, check whether TSB 2079690, 00 Combined software update 03.10.00/C
(28.13.01) KD2 is available for this vehicle. If this is the case, please perform the software update described in TSB
2079690. In this case, please ignore the instruction in the TSB that the digital key must be deleted before the
update. Delete the key after the update and follow the subsequent instructions according to TSB 2079690.

When performing TSB 2079690, it is imperative to precisely observe the instructions for deleting and creating the
key user and digital key.

Warranty
Claim Type: * If the vehicle is outside of any warranty, this Technical Service Bulletin is
informational only.

Service Number: 9710

Damage Code: KDO02

Labor Operations: Software update, including connecting battery 01510010 |See SRT with
charger associated operations
Fixed rate for software update, including all 01510040 |130TU

required preliminary and follow-up work (including
bus sleep cycle, calibration drive, and additional
work)

Loosen and secure earth strap 97850999 |20TU

In the case of additional attempts, an additional 01509999 |50TU
lump sum of 50 time units is possible per flash

cancellation. Per each documented

attempt

Claim Comment: As per TSB 2078471/5

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

When performing the combined software update, time stamps are not required for billing under warranty. You are
therefore permitted to work on other vehicles at the same time. The combined software update can also be
performed by non-productive personnel.

Additional Information

All part and service references provided in this TSB (2078471) 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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