84102447710 Telematics Control Unit Battery for BMW 1 2 3 4 5 7 Series X1 X3
Product Emphasis: Genuine BMW telematics control unit battery engineered to provide backup power to the emergency call system (SOS) and telematics module. This battery ensures the eCall system remains operational after a main battery disconnect or failure, allowing emergency services to be contacted in the event of an accident. Designed as a direct replacement for the original battery, which commonly degrades over time, triggering the "Emergency Call System Not Available" dashboard warning.
Original Part Number: 84102447710 / 84-10-2-447-710
Supersession(s): 84109361678
Dimensions: Weight approximately 0.046 kg
OEM Standard Size: Yes — manufactured to BMW original equipment specifications
Vehicle Compatibility: BMW 1 Series (F20/F21/F40/F52), 2 Series (F22/F23/F44/F45/F46/F87 M2), 3 Series (F30/F31/F34/F35/F80 M3/G20/G21/G28), 4 Series (F32/F33/F36/F82 M4/F83 M4), 5 Series (G30/G31/F90 M5), 6 Series (F12/F13/G32), 7 Series (G11/G12), 8 Series (G14/G15), X1 (F48/F49), X2 (F39), X3 (F25/G01/G08/F97 X3 M), X4 (F26/G02/F98 X4 M), X5 (F15/G05/F85 X5 M), X6 (F16/F86 X6 M), X7 (G07), MINI (F54/F55/F56/F57/F60), Rolls-Royce (Phantom, Ghost, Wraith, Dawn, Cullinan)
Years: 2015 and newer (model-dependent)
Product Name: Battery for Telematics Control Unit / TCB DACH Battery / Telematics Battery (SOS Call)
Quality: Genuine BMW quality. Voltage: 8V; Capacity: 330mAh. Manufactured with lithium-ion chemistry for reliable backup power. Backed by BMW factory warranty.
Brand: BMW (Genuine OEM)
Manufacturer Part Number: 84102447710
Superseded Part Number: 84109361678
Part Description: Battery for Telematics Control Unit (TCB DACH)
Condition: New
Fitment Type: Direct Replacement
Position: Telematics Control Unit (Trunk/Boot Area)
Voltage: 8V
Capacity: 330mAh
Chemistry: Lithium-Ion
Weight: Approximately 0.046 kg
Quantity Required: 1 per vehicle
Genuine OEM part ensuring perfect vehicle fitment
Provides backup power to the emergency call (SOS) system
Resolves "Emergency Call System Not Available" dashboard warning
Lithium-ion chemistry for reliable long-term performance
Direct replacement for degraded original telematics battery
Essential for maintaining eCall system functionality
No modifications required for installation
BMW 1 Series: F20, F21, F40, F52
BMW 2 Series: F22, F23, F44, F45, F46, F87 M2
BMW 3 Series: F30, F31, F34, F35, F80 M3, G20, G21, G28
BMW 4 Series: F32, F33, F36, F82 M4, F83 M4
BMW 5 Series: G30, G31, F90 M5
BMW 6 Series: F12, F13, G32
BMW 7 Series: G11, G12
BMW 8 Series: G14, G15
BMW X1: F48, F49
BMW X2: F39
BMW X3: F25, G01, G08, F97 X3 M
BMW X4: F26, G02, F98 X4 M
BMW X5: F15, G05, F85 X5 M
BMW X6: F16, F86 X6 M
BMW X7: G07
MINI: F54, F55, F56, F57, F60
Rolls-Royce: Phantom, Ghost, Wraith, Dawn, Cullinan
Note: This battery is only for vehicles with Telematics Control Unit (TCB) and BMW Live Cockpit Professional. Verify fitment by VIN before purchase.
Q1: What does this telematics control unit battery do?
A: It provides backup power to the emergency call system and telematics module. If the main vehicle battery is disconnected or fails during an accident, this battery ensures the SOS system can still contact emergency services. A degraded battery commonly triggers an "Emergency Call System Not Available" warning on the dashboard.
Q2: Is this a genuine BMW OEM part?
A: Yes. 84102447710 is the genuine BMW OEM part number for this telematics control unit battery, which supersedes 84109361678. It is described as a lithium-ion 8V 330mAh battery for the emergency call system.
Q3: Will this fit my BMW?
A: This battery is compatible with a wide range of BMW models from 2015 onward, including 1, 2, 3, 4, 5, 6, 7, and 8 Series, as well as X1, X2, X3, X4, X5, X6, X7, MINI, and Rolls-Royce models. Always verify compatibility using your vehicle's VIN before ordering.
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