How to Find the Correct JLR TCU Part Number for Your Car

A Simple Mistake, A Big Headache: Finding the Correct JLR TCU Part Number

Ordering a new Telematics Control Unit (TCU) for your Jaguar or Land Rover should be a straightforward process, but one small mistake can lead to big problems: ordering the wrong part number. This guide will show you how to ensure you get the right part the first time.

Why is the Part Number So Important?

JLR uses dozens of different TCUs across its model range. While they may look physically similar, they differ in crucial ways:

• Hardware: 3G vs. 4G capabilities.
• Software: Designed for different infotainment systems (e.g., InControl Touch vs. Touch Pro).
• Regional Variants: Different cellular frequencies for North America, Europe, and other regions.

Installing a TCU with the wrong part number will, at best, result in some features not working. At worst, it will be completely incompatible and un-programmable.

Method 1: Use Your VIN with a Dealer or Specialist

This is the most reliable method. Contact a JLR dealership parts department or a specialist supplier like SX-Tool. Provide them with your vehicle's 17-digit VIN. They can use JLR's Electronic Parts Catalogue (EPC) to look up the exact, most current part number specified for your car's build.

Method 2: Physical Inspection

If your old TCU has already been removed, you can find the part number directly on its label. Look for a number in a format like L8B2-70718-AY أو LR091256. This is the surest way to identify the part, but be aware of supersessions.

Understanding Supersessions

Jaguar Land Rover often improves parts over time. When they do, they release the new version with an updated part number, and the old number is ‘superseded'. For example, part LR012345 might be replaced by LR012346. Both will fit, but the newer one is the preferred replacement. A good parts supplier will automatically provide you with the latest superseded part number.

Using our Site to Verify

Once you have a part number, you can use the search bar on sx-tool.com to find it. Our product pages list the part number and a compatible vehicle list. If you're ever in doubt, don't hesitate to contact our expert team with your VIN before placing an order. Taking a few extra minutes to verify the part number can save you days of frustration.