2021-2023 Audi A6/A7 TPMS Warning Light TSB

Audi has issued Technical Service Bulletin (TSB) 44 22 93 2065474/3 to address a common concern regarding the Tire Pressure Monitoring System (TPMS). This bulletin, dated May 20, 2022, supersedes previous TSB 22-91 from March 17, 2022, and provides updated repair instructions.

The TSB applies to various 2021-2023 Audi models, including the A6, A7, S6, S7, RS 6 Avant, and RS 7. Owners of these vehicles may experience a persistent Audi A6 TPMS warning light in the instrument cluster or a specific diagnostic trouble code related to the TPMS control module.

Symptoms

Owners may observe the following issues:

• The "tire pressure monitoring system (TPMS) warning light is on" in the instrument cluster.
• A "TPMS message in the instrument cluster" is displayed.

Technicians diagnosing the issue may find that the "tire pressure monitoring system control module, J502 (address code 0065) cannot be reached with the diagnostic tester."

Fault Codes / DTCs

When scanned, the data bus on board diagnostic interface, J533 (address code 0019), may store the following diagnostic trouble code (DTC):

Code	Description	Symptom Code
U012700	Tire Pressure Monitoring Control Module - no communication	131595

Technical Background

According to Audi, the root cause of this communication failure and the illuminated Audi A6 TPMS warning light is moisture intrusion. Ambient conditions can allow moisture to enter the TPMS control module (J502) through its pressure equalization element, leading to the module's failure.

Important Warnings

Audi notes that a long-term production solution for this issue is currently under development. This bulletin provides the current recommended repair procedure, but further updates may be released once a permanent solution is available.

Repair Procedure Summary

The repair procedure outlined in TSB 44 22 93 2065474/3 involves several steps to address the faulty TPMS control module:

1. Initial Inspection: Technicians should first check the wiring and pins in the connector for any damage. They must also measure the voltage supply at the tire pressure monitoring system control module, J502 (address code 0065).
2. Module Replacement: If no wiring or voltage supply irregularities are detected, the TPMS control module, J502, must be replaced. A new bracket, part number 4E0 810 675 B, should also be installed.
3. Wiring Routing: It is crucial to ensure that the wiring is routed correctly at the new bracket and connector. The TSB emphasizes that the wiring must be routed straight into the connector housing to ensure a proper seal and prevent future moisture intrusion. Figures 1 and 2 in the TSB illustrate the installation locations for both the standard and new bracket configurations.

Required Parts and Tools

For this repair, the following parts are specified:

• Bracket: Part number 4E0 810 675 B (Quantity 01)
• TPMS Control Module: Refer to ETKA for the correct part number (Quantity 01)
• Fasteners, Bolts, Nuts, and Screws: As needed per the Repair Manual (Refer to ETKA/ELSA)

Warranty Information

This repair is covered under Audi's warranty for up to 48 months or 50,000 miles. For Certified Pre-Owned (CPO) vehicles, the claim type is G10, and owner verification is required. If the vehicle is outside of warranty coverage, this Technical Service Bulletin serves as informational guidance.

Warranty claims should be submitted using Service Number 4434 and Damage Code 0040. Specific labor operations include:

• Remove and install Tire Pressure Monitoring System control module (Labor Operation 4434 1900)
• Check Tire Pressure Monitoring System control module (Labor Operation 4434 0199)
• Repair Tire Pressure Monitoring System control module (Labor Operation 4434 4199)

Diagnostic time is covered under GFF 0150 0000. A road test after the service procedure is covered under 0121 0004, while a road test prior to service has no allowance.

All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual and are subject to review or audit.

NHTSA ID: 10212110