93 PSS: Warning Message: "Electrical System: Fault. Please Contact Workshop" (E-Tron Gt) (GROUP 91, NO. 25-40)

WARNING: This page is about the A4 Quattro Premium, 2.0L Eng VIN A, which is a different variant/trim than selected.

Publication date: 2025-04-10
Reference number: GROUP 91, NO. 25-40
Supersedes refnos: 2073582/1, 2073582/2, GROUP 91, NO. 24-94

93 PSS: WARNING MESSAGE: "ELECTRICAL SYSTEM: FAULT. PLEASE CONTACT WORKSHOP" (E-TRON GT)

TECHNICAL SERVICE BULLETIN

Reference Number(s): GROUP 91, NO. 25-40 (2073582/2), Date of Issue: April 10, 2025

AUDI:	2018-2026 All Audi Vehicles
GROUP:	91 - Radio, Telephone, Board Computer, Multi-Function Indicator (MFI)

Superceded Bulletin(s): GROUP 91, NO. 24-94, Date of Issue: April 04, 2024

SERVICE INFORMATION

91 25 40 2073582/2 April 10, 2025. Supersedes Technical Service Bulletin Group 91 number 24-94 dated April 4, 2024, for reasons listed below.

APPLICABLE MODELS AND YEARS

Model(s)	Year	VIN Range	Vehicle-Specific Equipment
All Audi Vehicles	2018 - 2026	All	Not applicable

CONDITION

REVISION HISTORY

Revision	Date	Purpose
2	-	Revised header (Add Model Year, updated PR Codes.) Revised Condition (Updated Workshop findings) Revised Service (Updated instructions) Revised Warranty (Updated Claim Types, and Labor Operations)
1	04/04/2024	Initial publication

Customer states:

The customer can no longer reliably connect their iPhone to Apple CarPlay™.
Automatic (re)connection of Apple CarPlay™ does not work.
Connecting Apple CarPlay™ manually only works sporadically.
Connecting via USB cable works as expected.

Workshop findings:

This customer complaint can be reproduced using the customer's phone.
When tried with other Apple devices, connection is possible, and Apple CarPlay™ works reliably.
The customer's phone can also be paired with other comparable vehicles.

TECHNICAL BACKGROUND 1

Complaints regarding Apple CarPlay™ pairing can be caused by various MMI or phone settings, as well as limitations with the phone's software. We therefore recommend you always verify the complaint using the newest phone software.

PRODUCTION SOLUTION

Not applicable.

SERVICE

NOTE: If you cannot find a specific TSB regarding Apple CarPlay™ connectivity, please check the following steps/settings first before doing further diagnosis. This may resolve the customer complaint.

In the MMI:

Delete all phone pairings: Press and hold on the affected phone in the Audi smartphone interface, a window will then open with further information and the option to delete the connection.

In the MMI via the connection manager, check whether the Wi-Fi hotspot name matches the Bluetooth name of the MMI (1).

If the Bluetooth name and the SSID do not match exactly, match them up. Make sure that the name is unique (e.g., Do not just use 'AUDI'). A password must also be set for the WiFi hotspot (2).

On the phone:

NOTE: The screenshots were taken with an iPhone SE Gen2 with iOS 17.2 in English. The settings may vary slightly depending on the iOS version, model, and language.

Delete BOTH (2.4GHz and 5GHz) vehicle Wi-Fi hotspots from the phone under Settings>Wi-Fi>Edit (top right)>remove vehicle hotspots from the list of known networks.

Delete the vehicle Bluetooth pairing under Settings>Bluetooth>blue "i" next to the device>select "Forget this device" .

Delete the vehicle CarPlay settings under Settings>General>CarPlay>select the vehicle>select "Forget this car ".

Check carefully that all steps above have been performed. Then re-pair the phone to the vehicle via the ASI tile in the MMI.

It can also be helpful to reset the network settings after an IOS update or when switching to a new iPhone and transferring the data from the old device.

WARNING: This will remove any Wi-Fi connections saved.

Settings>>General>>Transfer or Reset iPhone>>Reset>>Reset Network Settings

Check all the steps above carefully. Then set up CarPlay again for the iPhone in the vehicle.

NOTE: If you would like to submit a technical repair query about Apple CarPlay™, please fill out the attached form completely and attach it to the technical inquiry.

WARRANTY

WARRANTY INFORMATION

Claim Type:	If the vehicle is outside of any warranty, this Technical Service Bulletin is informational only.
Service Number:	9109
Damage Code:	AD39
Labor Operations:	Check display and operating unit	9196 0199	20 TU
	GFF	No allowance	0 TU
Claim Comment:	As per TSB 2073582/2

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.

ADDITIONAL INFORMATION

All part and service references provided in this TSB (2073582 ) 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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