Audi SOS System B105413
“Emergency call function fault. Function partially available. Please contact workshop.”
For Mr N, seeing this message appear on the dashboard of his Audi A1 was an immediate cause for concern.
The SOS button in the roof lining had turned red, signalling that a safety system he’d always relied on was no longer functioning correctly.
An emergency call fault is never something to set aside and deal with later.
This is the system designed to automatically place an emergency call after a serious collision. When it stops working, you lose a layer of protection you’ve most likely never had reason to question.
Looking for expert guidance, Mr N brought his Audi A1 to Robert Cockings Motor Repairs, Yeovil, to have the fault thoroughly investigated.
Below, you’ll uncover how our Audi specialists got to the bottom of the fault, what caused it, and how the Audi SOS system was fully repaired.
How the Audi SOS System B105413 Fault Was First Assessed
Once Mr N arrived at Robert Cockings Motor Repairs, Yeovil, our Audi specialists began by listening to what had happened.
Understanding the customer’s experience is a fundamental first step in every investigation at our garage, giving our team the context needed to guide the process from the start. Mr N told us that a fault message had appeared on the dashboard, and that the SOS indicator on the roof console had turned red.
His vehicle hadn’t shown any other problems, there had been no recent work, and there was nothing that could explain the fault.
With that understanding in place, our Audi technicians started the first stage of checks.
Our first checks included:
- A comprehensive visual inspection to look for any evident signs of damage.
- A complete fault code scan to identify any stored or active fault codes.
The visual inspection came back clear. Every component was visually intact, with no apparent damage. After the visual review, our team moved on to a fault code scan.
The fault code scan was run using Audi manufacturer-level technology, while live data from the relevant control modules was reviewed in parallel.
The scan highlighted one fault code:
- B105413, GPS Antenna, open circuit, with an active/static status.
What Does a B105413 Fault Code Mean for Your Audi?
A B105413 code is recorded when the telematics control module detects an open circuit in the GPS antenna circuit. The GPS antenna is the component that feeds location data to Audi’s emergency call system, enabling the vehicle’s position to be determined if an automatic emergency call occurs.
If a valid GPS signal cannot reach the system, the SOS function may operate in a limited capacity, and a warning message will appear on the dashboard.
This confirmed that the vehicle’s telematics control module had detected an open circuit in the GPS antenna signal path.
A fault code, however, only points to the affected area. It doesn’t tell you what’s behind the fault.
A B105413 GPS antenna fault could stem from the antenna itself, water ingress, a poor connection, or the coaxial cabling. Getting to the bottom of what had caused the Audi SOS fault and fixing it properly required the investigation to go further.
Tracing the Source of the B105413 GPS Antenna Fault
Now that the B105413 GPS antenna fault was on record, the next task was to establish exactly what had caused it.
A fault code flags the problem area, but understanding why it occurred requires structured investigation and systematic testing.
Our Audi specialists began by referring to the manufacturer’s technical information service.
As your local independent Audi specialist, our team has access to the same technology and technical data as the main dealerships. This includes wiring diagrams, current flow diagrams, component specifications, and any technical service bulletins relating to the Audi SOS system B105413 fault.
Drawing on this research, our expert Audi technicians built a targeted test plan:
- Carry out continuity and correct signal path testing on the coaxial cable and wiring from the GPS antenna to the emergency call module.
- Check all connections across the circuit for signs of poor contact or corrosion.
- Remove the roof antenna module and assess it for any indication of water intrusion or physical damage.
The initial testing stage focused on continuity and resistance testing of the wiring between the emergency call module and the roof-mounted GPS antenna. The results came back within specification, ruling out a cable or connector fault.
Our Audi specialists then shifted their focus to the roof antenna module. Upon removing the shark fin antenna and conducting a detailed inspection, they found that the GPS antenna element inside the module had failed, resulting in the open circuit recorded under the B105413 fault code.
This internal failure was directly responsible for the emergency call system warning.
The GPS antenna element was no longer capable of providing a valid GPS signal to the telematics module, which is why the SOS function had been flagged as only partially available.
The Audi B105413 Fault Fix: How Our Specialists Repaired the SOS System
Once the root cause was clear, our Audi specialists contacted Mr N to go through the findings in detail. We explained that the GPS antenna within the roof-mounted shark fin module had failed internally, and that this was directly responsible for the Audi SOS system B105413 warning.
At Robert Cockings Motor Repairs, Yeovil, no repair work starts until you fully understand the fault and give your approval to proceed. Mr N was pleased with the clarity of the explanation and gave our team the go-ahead for the repair.
Our Audi technicians then began the Audi B105413 fault fix:
- The faulty roof antenna module was removed carefully, and the mounting area was checked for any signs of water damage or deterioration that might affect the replacement component.
- All electrical connections were inspected to confirm they were secure and properly seated.
- An Audi-approved replacement roof antenna module was installed, restoring the GPS antenna circuit used by the emergency call system.
With the replacement module installed, the Audi emergency call system repair was ready for final confirmation.
Final Checks: Confirming the Audi SOS Fault Fix Was Complete
With the replacement complete, our Audi specialists conducted a series of checks to confirm the Audi SOS fault fix was successful and that the emergency call system was functioning as intended by the manufacturer.
Our team performed the following verification steps:
- Checked that the SOS indicator in the roof console had returned to its normal state.
- Verified that the emergency call function reported normal operation with no active warnings.
- Cleared the stored B105413 fault code using manufacturer-level equipment.
- Ran a full system scan to ensure that no additional fault codes had been stored.
All checks confirmed the expected results. The GPS antenna circuit tested correctly, the emergency call system had been fully restored, and no further faults were present.
Taking a structured, methodical approach, our team identified the exact cause of the Audi SOS system B105413 fault without replacing any parts that didn’t need to be replaced.
The fault was investigated, tested, and resolved during a single visit.
Once our expert Audi technicians confirmed that the repair to the Audi emergency call system was successful, they contacted Mr N to let him know that his Audi A1 was ready for collection.
Mr N was pleased with the precision of the repair, the straightforward communication throughout the process, and the efficient turnaround, all at a better value compared to a main dealer.
Audi SOS Fault? Trust Robert Cockings Motor Repairs to Investigate
Is your Audi displaying an emergency call system warning or a red SOS light on the dashboard?
Acting quickly is the best way to make sure your vehicle’s safety systems are in full working order when you need them most.
Emergency call faults can arise from a variety of causes, including antenna failures, wiring faults, and module issues. Without the right technology and a structured testing approach, there’s a genuine risk of the fault being misdiagnosed or parts being replaced unnecessarily.
At Robert Cockings Motor Repairs, Yeovil, our Audi specialists use manufacturer-level technology, official technical data, and hands-on experience to investigate faults like the Audi SOS system B105413 fault and put them right the first time.
Here is why Audi drivers across Yeovil, Dorchester and Taunton trust our team:
- Award-winning garage, recognised as Top Garage 2022.
- 12 months parts and labour guarantee on all completed work.
- A courtesy car is available, so you won’t be left without a vehicle during the repair.
Join the {{review-count}} local drivers who’ve rated us {{average-rating}} stars on Google for accurate repairs, expert knowledge and great value.
If your Audi has an SOS warning or you suspect an emergency call system fault, call Robert Cockings Motor Repairs, Yeovil, today on 01935 427139 to book your inspection.
