وسم الآرشيف: TCU Repair

The JLR TCU Backup Battery: A Tiny Part Causing a Major Fault If your Jaguar or Land Rover is displaying the ‘SOS System Inactive’ warning, one of the most likely culprits is a tiny battery hidden deep inside the Telematics Control Unit (TCU). While you can’t see it, its failure has major consequences for your […]