2021 Audi A5 SOS Emergency Call Malfunction TSB

Symptoms

Owners of certain 2020-2021 Audi A4, A5, S4, S5, and RS 5 models, including the 2021 Audi A5, RS 5, and S5, may observe a specific warning message on their instrument cluster. This message states: "Emergency call function: fault! Function partially available. Please contact workshop." This indicates a problem with the vehicle's SOS emergency call system.

Fault Codes / DTCs

When diagnosing the SOS emergency call malfunction, technicians may find one or both of the following Diagnostic Trouble Codes (DTCs) stored in the telematics control module, J949 (address word 0075):

Code	Description	Condition
B18BD11	mobile phone aerial 1 for emergency call module and communication unit, short circuit to ground	static or sporadic
B18BD13	mobile phone aerial 1 for emergency call module and communication unit, interruption	static or sporadic

Diagnosis and Trigger Conditions

The root cause of the 2021 Audi A5 SOS emergency call malfunction is often water ingress. This water damage typically affects the mobile phone aerial 1 due to a damaged seal. This can lead to either a short circuit (DTC B18BD11) or an interruption (DTC B18BD13) in the aerial's connection to the emergency call module and communication unit.

Important Warnings for Owners and Technicians

Audi has issued specific warnings regarding the diagnosis and repair of this 2021 Audi A5 SOS emergency call malfunction:

• "These diagnostic entries cannot be resolved via the test plans suggested by GFF. The repair must be carried out by replacing parts."
• "The GFF test plans should not be performed."
• "The GFF test plans cannot be invoiced."
• "Do not run any test plans for DTCs mentioned in this TSB. Time used to run test plans for DTCs mentioned in this TSB may be debited."

These warnings emphasize that attempting to use standard Guided Fault Finding (GFF) test plans for these DTCs will not resolve the issue and may result in unbillable time for technicians. The only solution is physical component replacement.

Repair Procedure Summary

Audi Technical Service Bulletin 91 24 41 2060197/5 outlines a specific repair process to address the SOS emergency call malfunction. The procedure involves replacing the affected components:

1. Replace the mobile phone aerial 1 (R263) for the emergency call module.
2. Replace the antenna wire that connects the mobile phone aerial 1 to the telematics control module (J949). This step requires careful unpinning of the defective wire from the 8-pin connector T8bc (or T8cp for vehicles from July 2019 onwards) and pinning in the new wire.

The repair ensures the proper functioning of the emergency call system by addressing the water-damaged components.

Required Tools or Parts

The following parts are required for the repair, as specified in TSB 2060197/5. Technicians should always verify the latest part information with their Parts Department and/or ETKA.

• Mobile phone aerial 1 for emergency call module -R263-: Quantity 1
• 4N1971650A: Adapter antenna cable, Quantity 1
• 000098714: Adapter antenna cable, Quantity 1
• Fasteners, Bolts, Nuts, and Screws: As needed per the Repair Manual.

Owner Action

If your 2021 Audi A5, RS 5, or S5 displays the "Emergency call function: fault! Function partially available. Please contact workshop." message or you suspect an SOS emergency call malfunction, it is recommended to contact an authorized Audi service center. Provide them with the symptoms and mention Audi Technical Service Bulletin 2060197/5. This repair involves specific part replacements and should be performed by qualified technicians. Warranty claims for this repair are processed under Claim Type 9128, Damage Code 0010, and must adhere to Audi Warranty Policies and Procedures.

---

Source: NHTSA ID: 11007343, Audi Technical Service Bulletin 91 24 41 2060197/5