Telematics Control Unit (TCU) Battery for Land Rovers and Range Rovers
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- 2 days ago
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INDEPENDENT LAND ROVER SERVICE CENTER SINCE 1995
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If your Land Rover or Range Rover dashboard suddenly displays an “SOS Limited Functionality” warning, the issue may be related to the Telematics Control Unit (TCU) battery. At Independent Land Rover Service Center, we specialize in diagnosing and servicing all Land Rover and Range Rover models throughout Los Angeles and Glendale, California.
The Telematics Control Unit (TCU) battery is a small rechargeable lithium-ion backup battery located inside the vehicle’s communication system. While it may be small, it plays a critical role in your vehicle’s emergency communication and connected services system. If the main vehicle battery loses power during an accident or electrical failure, the TCU backup battery helps maintain emergency SOS communication capability.
Over time, the TCU battery weakens and eventually fails. When this happens, many Land Rover and Range Rover owners begin seeing warning messages such as:
SOS Limited Functionality
Telematics Malfunction
Emergency Call Function Limited
Battery Fault Warnings
In many cases, these warnings appear even when the main vehicle battery is still in good condition.
When Should the Telematics Control Unit (TCU) Battery Be Replaced?
Most Land Rover and Range Rover TCU batteries begin failing between 4–7 years of age depending on driving habits, climate conditions, and charging cycles. Many vehicles begin showing warning signs around 40,000–80,000 miles, although some fail earlier due to heat exposure or irregular battery charging.
Replacing the TCU battery early can help prevent recurring warning messages and maintain proper telematics functionality. At Independent Land Rover Service Center, we verify the correct replacement battery using your VIN to ensure exact compatibility with your model and year.
Common Land Rover & Range Rover TCU Battery Part Numbers
LR089861
Fits:
Range Rover (2018–2021)
Range Rover Sport (2018–2022)
Range Rover Velar (2017–2020)
Range Rover Evoque (2018–2020)
LR132077
Fits:
Full-Size Range Rover (2022+)
Range Rover Sport (2023+)
Range Rover Evoque (2021+)
LR046049 (Formerly LR112188)
Fits:
Range Rover (2014–2017)
Range Rover Sport (2014–2017)
Range Rover Evoque (2014–2017)

Why Choose an Independent Land Rover Specialist?
Many owners compare dealership pricing versus an independent Land Rover repair facility when servicing TCU batteries and telematics systems. At Independent Land Rover Service Center, we provide dealership-level diagnostics and professional installation without dealership pricing.
Our technicians specialize in Land Rover and Range Rover electrical systems, diagnostics, battery registration, and telematics repairs. We service all Land Rover and Range Rover models and help customers throughout Los Angeles, Glendale, and surrounding Southern California areas keep their vehicles performing properly.
If your Land Rover or Range Rover is showing an SOS warning message, contact Independent Land Rover Service Center today for professional diagnostics and TCU battery replacement service.
Independent Land Rover Service Center Repair Shop, Los Angeles, Southern California
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If you are experiencing any issues on your Land Rover - Range Rover,
Contact Independent Land Rover Service Center Since 1995 at 818-293-8555

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Saturday 8:00 AM to 2:00 PM
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