BMW Emergency Call Malfunction? Here's the Fix (B7F341)

In this video, I diagnose and repair a BMW X5 displaying an Emergency Call Malfunction warning. Using Topdon Phoenix Elite, I retrieved fault code B7F341 – Emergency Call Battery and followed the BMW test plan (AT8400-SYSTEL2), which confirmed that the backup battery inside the Telematics Control Box (TCB) had failed. I show the diagnostic process, explain what the fault means, replace the Emergency Call backup battery, clear the fault memory, and verify the repair. 00:00 Introduction 00:11 Verifying Complaint 00:22 Checking faults, generating fault report 02:25 TCB Location 02:36 • B7F341 – Emergency Call Battery fault and "Emergency Call Warning" 02:46 TCB removed 02:56 Old Vs New battery 02:57 Clearing faults 05:11 Recap Fault Code Covered: • B7F341 – Emergency Call Battery Repair Performed: • Read BMW fault memory with Topdon Phoenix Elite • Performed BMW guided test plan • Replaced Emergency Call backup battery in the TCB • Cleared fault memory • Verified proper operation If you're experiencing an Emergency Call Malfunction or SOS warning on your BMW, this video may help you understand the cause before replacing unnecessary parts. If you enjoy real-world BMW diagnostics, programming, and repair videos, consider subscribing for more BMW technical content. Have you repaired an Emergency Call Malfunction on your BMW? Let me know your model and what fixed it in the comments. See the diagnostic case study here! https://community.topdon.com/detail?i... #BMW #BMWX5 #EmergencyCallMalfunction #BMWRepair #BMWDiagnostics #BMWTech #BMWISTA #AutomotiveDiagnostics #DiagnosticTroubleCodes #MechanicLife #BMWDIY #AutomotiveRepair #TechLife #BMWMasterTech #Scanner