BMW G20/G21 SOS Emergency Call Module Coding & Repair London

BMW 3 Series (G20/G21) Emergency Call System Module Coding

Expert Programming for SOS Malfunction and Telematics Control Unit (TCB/ATM)

⚠️ Persistent "Emergency Call System Malfunction" Error?

Don't drive with an annoying fault. Get professional BMW G-Series Telematics Unit Programming:

**Module Replacement Coding:** If your **TCB (Telematics Control Box)** or **ATM (Advanced Telematics Module)** is faulty (often due to water ingress via the shark fin antenna), the replacement unit *must* be coded to your vehicle's VIN.
**Faulty Backup Battery:** The most common cause is the dedicated lithium backup battery failure (**Fault Code B7F341/B7F343**). Replacing the battery often requires advanced coding (e.g., using **ISTA/E-Sys**) to clear the persistent error message from the cluster.
**VIN-Matching and Flashing:** We perform full module flashing and VIN synchronization to ensure the replacement module communicates correctly with the **iDrive (HU-H)** and **Instrument Cluster (KOMBI)**, validating the emergency function.
**Software Glitches & Updates:** Resolving errors caused by software bugs or mandatory updates (like the 3G sunset issue in older modules) by performing a complete software update on the ATM module.
**Full G-Series Coverage:** Service applies specifically to the **G20 Saloon, G21 Touring, and G80 M3** models (2019–2023) using the modern ATM module structure.
**Dealer-Level Tools:** We utilize professional BMW diagnostic and programming tools (like **ISTA and E-Sys**) required for deep-level module commissioning and fault deletion.

Please provide your BMW's chassis code, year, and whether the fault arose after a battery replacement, or if the module is water damaged.