Genuine BMW TCB (Telematics Communication Box) Battery 84109878663

Part number 84109878663 The Genuine BMW TCB (Telematics Communication Box) battery is a critical backup power source designed to support the vehicle’s telematics and emergency communication systems. It ensures that key features such as eCall, remote services, and connected drive functions remain operational even if the main vehicle battery is disconnected or fails. Manufactured to BMW’s exact standards, this battery delivers reliable performance, stable voltage supply, and seamless integration with the vehicle’s electronic systems. Over time, TCB batteries can degrade, which may lead to warning messages or reduced functionality of connected services. Replacing it with a genuine BMW part restores full system reliability and ensures continued operation of safety-critical features. Compatibility: Fits a wide range of newer BMW models depending on telematics control unit specification, including: 1 Series F70 2 Series F74 Gran Coupé, F78 Gran Coupé, G42, G87 M2, U06 Active Tourer 3 Series G20 LCI, G21 LCI, G28 LCI, G80 M3 (including LCI), G81 M3 Touring 4 Series G22 (including LCI), G23 (including LCI), G26 (including LCI), G82 M4 5 Series G60, G61, G68, G90 M5, G99 M5 Touring 7 Series G70 i4 G26 (including LCI), i3L G28 X1 U11, X1L U12 X2 U10 X3 G45, X3L G48 X5 G05 LCI, X5L G18 LCI, X5 M F95 LCI X6 G06 LCI, X6 M F96 LCI X7 G07 LCI XM G09 Fitment depends on the specific control units installed in the vehicle. Please contact our team with your VIN number to confirm compatibility before purchase.