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Technical Service Bulletin Transaction No.: 2080535/2
39 Load-change clacking noises from drive train Release date: Jan 30, 2026
Condition
Model(s) Year(s) VIN Range Vehicle Specific Equipment
Ad, S5 (FU), Q5, Q5
Sportback, SQ5, and 2025 All Not applicable
$Q5 Sportback (GU)
REVISION HISTORY
Revision |Date Purpose
2 - Revised header (Added software version)
1 12/18/2025 | Initial publication
Customer states:

* Clacking noises which appear to come from the gearbox can be heard when the vehicle is being driven slowly
(under 20 mph), for example in stop-start traffic or while maneuvering or parking.

Workshop findings:

* The noises can be reproduced at any time and can be clearly traced to the all-wheel drive coupling using the
standard diagnostic tools.

Technical Background
Not applicable.

Production Solution
Optimized software.

Service

©

Try to reproduce the customer complaint (based on the description/cause of the issue), so that it can be
clearly assigned to this TSB. The following repair must only be carried out if all the criteria (model/type,
chassis number, engine/motor, 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, the warranty claim may be rejected, and the cost of the parts may be charged
back.

Please perform the software update described in TSB 2079690, 00 Combined software update 03.10.00/C
(28.13.01) KD2.

Warranty

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

Service Number: 3960

Damage Code: KDO2

Labor Operations: | Software update, including connecting battery charger |0151 0010 |See SRT with
associated
operations

Fixed rate for software update, including all required 01510040 |130 TU
preliminary and follow-up work (including bus sleep
cycle, calibration drives, and additional work)

In the case of additional attempts after flash abort 01509999 |50TU
occurred, an additional lump sum of 50 time units can

be claimed per flash cancellation Per each

documented attempt

Claim Comment: As per TSB 2080535/2

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

The engine control unit software must be updated on this vehicle. Inform the customer about the software update
and ask them whether the engine control unit has been altered by chip tuning. Explain to the customer that updating
the engine control unit software renders the chip tuning ineffective. In certain circumstances, the engine control unit
may even be damaged by the software update. Ask the customer to clarify with the tuning company in advance
whether a software update is possible. Damage to the engine control unit resulting from chip tuning cannot be billed
to AUDI AG under warranty. Please refer the customer to the Warranty and Maintenance booklet to learn more
about how chip tuning can impact warranty coverage. Explain to the customer that neither AUDI AG nor your
company can be held responsible for damage caused by the software update or for damage that occurs as the
result of not having the update performed. Make a note to this effect on the order before it is signed by the customer.
Include this information in the customer file.

All part and service references provided in this TSB (2080535) 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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