Audi SOS System B105413
“Emergency call function fault. Function partially available. Please contact workshop.”
That was the warning staring back at Mr B from the dashboard of his Audi A1, and it wasn’t something he could brush aside.
A red SOS indicator had appeared in the roof console, confirming that one of the vehicle’s built-in safety features had partially shut down.
An emergency call system fault isn’t the kind of warning you put off dealing with.
This is the system designed to automatically place an emergency call if your vehicle is involved in a serious collision. Once it stops functioning correctly, a layer of safety you’ve likely never had to think about is no longer there when it counts.
Not willing to leave it unresolved, Mr B took his Audi A1 to Athersmith Motor Services, Ulverston, to get a definitive answer.
Inside this blog, you’ll uncover how our Audi specialists traced the fault, what the investigation revealed, and how the Audi SOS system was restored.
How Our Team First Assessed the Audi SOS System B105413 Warning
Once Mr B arrived at Athersmith Motor Services, Ulverston, our Audi specialists began by listening. Understanding exactly what a customer has experienced is an important first step in any investigation at our garage, helping us focus the process in the right direction from the outset.
Mr B explained that a warning message had appeared on the dashboard, and that the SOS indicator in the roof console had turned red.
There had been no previous problems with the vehicle, no recent repairs, and nothing that might have triggered the fault.
With this information gathered, our Audi technicians proceeded with the first round of checks.
Our initial checks included:
- A full visual inspection to identify any visible signs of damage.
- A system scan to retrieve any stored or active fault codes.
Nothing stood out during the visual inspection. Every component appeared to be in good condition, with no obvious damage. With the visual assessment complete, our team turned their attention to the system scan.
The system scan was completed using Audi manufacturer-level technology, with live data from the relevant control modules reviewed simultaneously.
The scan identified one fault code:
- B105413, GPS Antenna, open circuit, with an active/static status.
What Does the B105413 Fault Code Mean?
The B105413 fault code is triggered when the vehicle’s telematics control module identifies an open circuit within the GPS antenna circuit. This antenna provides the location data that Audi’s emergency call system relies on to determine the vehicle’s location when an automatic emergency call is placed.
Without a valid GPS signal reaching the system, the SOS function may only be partially available, and a warning message will be displayed 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 on its own, though, doesn’t reveal the underlying cause.
A B105413 GPS antenna fault of this nature could originate from the antenna itself, the coaxial cabling, a connection fault, or water ingress. Pinpointing the true cause of the Audi SOS fault and fixing it properly required further investigation.
What Was Behind the B105413 GPS Antenna Fault?
With the B105413 GPS antenna fault now confirmed, the next priority was to establish exactly what had caused it.
A fault code points to the problem, but uncovering the root cause requires methodical investigation and targeted testing.
Our expert Audi technicians started by reviewing the manufacturer’s technical information service.
As your local independent Audi specialist, our team has access to the same level of technology and technical data as the main dealerships, from wiring diagrams and current flow diagrams to component specifications and any technical service bulletins linked to the Audi SOS system B105413 fault.
Using this research, our specialists put together a structured test plan:
- Carry out continuity and correct signal path testing on the coaxial cable and wiring running from the GPS antenna to the emergency call module.
- Inspect all connections within the circuit for evidence of poor contact or corrosion.
- Remove the roof antenna module and examine it for signs of water intrusion or physical damage.
The first round of testing focused on continuity and resistance testing across the wiring between the emergency call module and the roof-mounted GPS antenna. Everything tested within specification, which ruled out a cable or connector fault.
Attention then shifted to the roof antenna module itself. Once our Audi experts removed the shark fin antenna and conducted a closer inspection, they discovered that the GPS antenna element inside the module had failed, resulting in the open circuit flagged by the B105413 fault code.
This internal failure was the reason the emergency call system had raised the warning.
The GPS antenna element was no longer able to deliver a valid GPS signal to the telematics module, which is why the SOS function had been reported as only partially available.
How Our Specialists Completed the Audi B105413 Fault Fix
With the root cause confirmed, our technicians got in touch with Mr B to talk him through what they’d found. We explained that the GPS antenna within the roof-mounted shark fin module had failed internally, which triggered the Audi SOS system B105413 warning.
At Athersmith Motor Services, Ulverston, no repair work goes ahead until you fully understand what’s been found and give your go-ahead. Mr B was satisfied with the explanation and authorised our team to proceed with the repair.
Our Audi specialists then carried out the Audi B105413 fault fix:
- The failed roof antenna module was removed with care, and the mounting area was checked for any signs of water damage or deterioration that might compromise the new component.
- A new roof antenna module was installed, restoring the GPS antenna circuit used by the emergency call system.
- Every electrical connection was verified to ensure it was secure and properly seated.
With the replacement module now in place, the Audi emergency call system repair was ready for its final checks.
Verifying That the Audi SOS Fault Fix Was Successful
Once the replacement was complete, our technicians ran a series of checks to ensure the Audi SOS fault fix had been carried out successfully and that the emergency call system was functioning as intended by the manufacturer.
Our team completed the following verification steps:
- Cleared the stored B105413 fault code using manufacturer-level equipment.
- Carried out a full system scan to confirm that no additional fault codes had been logged.
- Checked that the SOS indicator in the roof console had returned to its normal state.
- Confirmed that the emergency call function reported normal operation with no active warnings.
All checks came back as expected. The GPS antenna circuit tested correctly, the emergency call system was fully restored, and no further faults were found.
Using a methodical, structured approach, our team pinpointed the exact cause of the B105413 GPS antenna fault without unnecessarily replacing any parts.
The fault was investigated, tested, and resolved in a single visit.
Once our experts had verified that the Audi emergency call system repair was complete, they got in touch with Mr B to let him know that his Audi A1 was ready for collection.
Mr B was pleased with the result, the clear communication he’d received throughout, and the efficient turnaround, all at a better value compared to a main dealer.
Audi SOS Light On? Speak to the Audi Specialists at Athersmith Motor Services
Is your Audi displaying an emergency call system warning or a red SOS light in the roof console?
Having the issue assessed sooner rather than later is the best way to make sure your vehicle’s safety systems are ready when you need them.
Emergency call faults can have a number of causes, from antenna failures and wiring faults to module issues. Without the right equipment and a structured testing approach, it’s easy to misdiagnose the fault or replace parts that didn’t need replacing.
At Athersmith Motor Services, Ulverston, our Audi specialists use manufacturer-level tools, official technical data, and hands-on experience to investigate faults like the Audi SOS system B105413 fault and resolve them correctly the first time.
Here is why Audi drivers across Ulverston, Kendal and the Lake District trust our team:
- Audi specialists with access to manufacturer-level technology and technical data.
- 12 months parts and labour guarantee on all completed work.
- Better value compared to main dealer pricing, without compromising on quality.
Join the {{review-count}} customers who have 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 Athersmith Motor Services, Ulverston, today on 01229 585288 to book your inspection.
