2020 Land Rover Discovery Sport KVM: Programming, Problems, and Part Numbers

Programming: The Single Most Important Factor

Before considering a replacement, it is critical to understand how these modules are integrated with the vehicle. The Keyless Vehicle Module (KVM) in a 2020 Land Rover Discovery Sport has a very specific and restrictive programming process.

This has major implications for buyers of used parts. A used KVM pulled from another Discovery Sport is electronically useless unless it has been made "virgin" again by a specialist with advanced tools. Simply swapping the module will result in a no-start condition. Programming must be done by a Land Rover dealership or a qualified independent shop using JLR's Pathfinder diagnostic software. This is not a DIY-friendly repair.

Symptoms of a Failing Keyless Entry Module

A failing KVM can cause a wide range of confusing and intermittent issues. Because the module communicates with many other systems in the vehicle, symptoms are not always straightforward. Owners often report:

• "Smart Key Not Detected" Warnings: The most common symptom is the vehicle intermittently failing to recognize the key fob, even with a new fob battery. You may need to place the key in a specific spot on the steering column to start the car.
• Complete No-Start Condition: The engine may crank but will not start because the immobilizer is not receiving the correct signal from the KVM.
• Erratic Locking and Unlocking: Doors may lock or unlock randomly, or the keyless entry buttons on the door handles may stop working intermittently.
• Parasitic Battery Drain: A faulty KVM may not "go to sleep" properly when the vehicle is off, causing the main 12V battery to drain overnight or within a few days.
• Multiple Unrelated Dashboard Warnings: Because the KVM is tied into the vehicle's network, its failure can trigger a cascade of seemingly unrelated fault lights for systems like ABS, traction control, and forward collision avoidance.
• Tailgate/Boot Release Failure: The rear hatch release is often routed through the KVM, and it may become inoperative or intermittent when the module is failing.

Known Issues, Recalls, and Technical Service Bulletins (TSBs)

While there are no recalls specifically for the KVM itself on the 2020 Discovery Sport, there are related recalls and issues that owners should be aware of.

NHTSA Recall 23V393 (Land Rover N798)

This major safety recall affects 2017-2020 Land Rover Discovery and Discovery Sport models equipped with the "Unilatch Keyless Vehicle (KV) entry function." The problem is that water can get into the rear door latch mechanism, causing corrosion. This can prevent the door from latching properly, potentially allowing a rear door to open while the vehicle is in motion. The official dealer remedy is to disable the keyless entry function for the affected door(s), meaning the handle may require more than one pull to open from a locked state. This issue is caused by a failure in a related part, not the central KVM, but it directly impacts the keyless entry system.

Electrical System Recalls

The 2020 Discovery Sport was also subject to recalls for potential electrical system overloads and DC-to-DC converter failures. These issues can cause a loss of power and various electrical faults that could be misdiagnosed as a KVM problem. It is important to ensure all applicable recalls have been performed on the vehicle before replacing modules.

Buying a Used 2020 Discovery Sport KVM

Purchasing a used KVM is risky but possible if you follow strict guidelines. For our audience, this is where value can be found, but caution is paramount.

• Confirm the Unit is "Virgin": This is non-negotiable. You must buy from a seller who can guarantee the module has been reset to a factory unprogrammed state. A module already programmed to another car is a paperweight. Ask the seller to explicitly confirm its status.
• Match Part Numbers Exactly: The KVM for the Discovery Sport comes in different versions, primarily for vehicles with or without Passive Entry (where you can unlock the door just by touching the handle). The version without passive entry typically has one main electrical plug, while the version with passive entry has two. Do not mix them up. The primary part number for the version without passive entry is LR117928 (also sold under Jaguar number T2H38587). The engineering part number printed on the unit itself is often K8D2-19H440-AC.
• Inspect for Water Damage: Water ingress is a known issue in modern Land Rovers. Carefully inspect the module's casing and electrical pins for any signs of corrosion, water marks, or rust. Do not buy a module with any signs of moisture damage.
• Line Up a Programmer First: Before you buy the part, confirm that your local Land Rover dealer or a trusted independent specialist is willing and able to program a customer-supplied used (virgin) module. Some shops may refuse to install parts they did not source themselves.

Replacement Costs

The cost to replace a KVM involves both the part and specialized labor for programming.

Frequently Asked Questions (FAQ)