By following this guide, you'll fix the BMW SOS Call System Failure without expensive dealership visits. Keep your BMW running smoothly with this DIY SOS battery replacement tutorial. The BMW Emergency Call system is an advanced safety feature equipped in most modern BMW vehicles.
Activated by either pressing an SOS button or automatically in the event of an airbag deployment, it uses a combination of cellular and GPS technology to quickly contact emergency services. The vehicle's main power supply. A dedicated backup battery.
This dual power setup ensures that even in the event of a severe accident resulting in complete power loss, the SOS function remains operational. The Telematic Communication Box (TCB) oversees the emergency battery's health by performing an internal self. BMW's SOS call system is designed to provide quick assistance in the event of an accident or emergency.
However, there may be instances when the SOS call system encounters a failure or malfunctions, leaving you unable to use this crucial feature. If you're experiencing issues with your BMW's SOS call system, here's a step. SOS call system failure is doing my head in, appears when I start the car and stays there, it did it go away twice before but comes back.
My warranty with BMW has expired now too. Anyone know how to fix this? It uses cellular connectivity to call emergency services and shares your exact location when seconds count.
Common Causes of BMW Emergency Call System Malfunctions Degraded Backup Battery The number one culprit behind SOS system failures is a worn. Β« Previous Thread Next Thread Emergency call / SOS call system failure. In this video, I show you exactly how to diagnose and fix the BMW SOS Call System Failure by checking and replacing the faulty SOS emergency battery π βΈ» π§ Diagnostic Explained We scan and confirm fault codes B7F341 / 031786, which usually point to a hardware failure of the SOS battery.
The eCall system in some vehicles uses satellite signals to communicate with emergency services. A problem with the satellite radio module or its connection could lead to a malfunction in the SOS call system. Solution: Contact a BMW dealership or service center to identify the problem and repair or replace the faulty module.
Technical Glitch. What causes a BMW SOS Call System Failure? The main causes include software glitches, weak battery power, network issues, or a malfunctioning Telematics Control Unit.